Zone Master, Normal View, 10 deg FOV, Master Map Normal View Leo Minor Copeland's Septet δ Zosma +16 00' +18 00' +20 00' +22 00' +24 00' θ Chertan Denebolaβ 12h 00m 11h 52m 11h 44m 11h 36m 11h 28m 11h 20m 11h 12m 11h 04m 10h 56m
, Map 1 Normal Image Sky charts generated by TheSky Software; used by permission of Software isque Inc. NGC 3701 STF 1531 Leo Minor Hipparcos 1586 Weisse 26 +21 00' +22 00' +23 00' +24 00' +25 00' STF 1537 NGC 3646 δ Zosma Delta Leo STF 1517 11h 30m 11h 25m 11h 20m 11h 15m 11h 10m 11h 05m 11h 00m
, Map 1 Mirror Image Sky charts generated by TheSky Software; used by permission of Software isque Inc. Weisse 26 Leo Minor Hipparcos 1586 STF 1531 NGC 3701 +21 00' +22 00' +23 00' +24 00' +25 00' Delta Leoδ Zosma STF 1537 STF 1517 NGC 3646 11h 00m 11h 05m 11h 10m 11h 15m 11h 20m 11h 25m 11h 30m
, Map 2 Normal Image Sky charts generated by TheSky Software; used by permission of Software isque Inc. Kustner 38 NGC 3686 NGC 3684 NGC 3691 81 Leo NGC 3646 STF 1517 NGC 3626 STF 1534 NGC 3608 NGC 3599 NGC 3605 NGC 3607 NGC 3655 2379 NGC 3507 NGC 3501 LDS 917 Jonckheere 427 +16 00' +17 00' +18 00' +19 00' +20 00' θ Theta Leo Chertan 11h 30m 11h 25m 11h 20m NGC 3596 11h 15m 11h 10m 11h 05m 11h 00m
, Map 2 Mirror Image Sky charts generated by TheSky Software; used by permission of Software isque Inc. LDS 917 NGC 3507 NGC 3501 Jonckheere 427 STF 1517 NGC 3599NGC 3608 NGC 3605 NGC 3607 2379 NGC 3646 NGC 3626 STF 1534 NGC 3655 Kustner 38 NGC 3686 NGC 3684 NGC 3691 81 Leo +16 00' +17 00' +18 00' +19 00' +20 00' Theta Leoθ Chertan NGC 3485 NGC 3596 11h 00m 11h 05m 11h 10m 11h 15m 11h 20m 11h 25m 11h 30m
, Map 3 Normal Image Sky charts generated by TheSky Software; used by permission of Software isque Inc. NGC 4022 Hough 534 h512 Pourteau 3118 STF 1582 OS 239 rej NGC 3815 Hussey 888 STF 1566 STF 1549 h2576 Copeland's Septet STF 1558 +21 00' +22 00' +23 00' +24 00' +25 00' 12h 00m 11h 55m STF 1577 93 Leo 11h 50m Sh 130 NGC 3837 NGC 3886 11h 45m 11h 40m 11h 35m 11h 30m
NGC 3701 STF 1549 h2576 STF 1558 Copeland's Septet, Map 3 Mirror Image Sky charts generated by TheSky Software; used by permission of Software isque Inc. NGC 3815 OS 239 rej STF 1566 Hussey 888 h512 NGC 4022 Pourteau 3118 STF 1582 +21 00' +22 00' +23 00' +24 00' +25 00' 93 Leo NGC 3837 Sh 130 NGC 3886 STF 1577 11h 30m 11h 35m 11h 40m 11h 45m 11h 50m 11h 55m 12h 00m
, Map 4 Normal Image Sky charts generated by TheSky Software; used by permission of Software isque Inc. NGC 4014 OSS 112 Kustner 41 h511 arton 1275 93 Leo Sh 130 NGC 3886 NGC 3837 NGC 3834 NGC 3827 arton 2412 Couteau 26 STF 1565 90 Leo +16 00' +17 00' +18 00' +19 00' +20 00' Sh 132 arton 1274 12h 00m 11h 55m 11h 50m 11h 45m 11h 40m 11h 35m 11h 30m
, Map 4 Mirror Image Sky charts generated by TheSky Software; used by permission of Software isque Inc. 90 Leo STF 1565 NGC 3837 NGC 3834 NGC 3827 arton 2412 Couteau 26 93 Leo Sh 130 NGC 3886 h511 arton 1275 OSS 112 Kustner 41 +16 00' +17 00' +18 00' +19 00' +20 00' arton 1274 Sh 132 11h 30m 11h 35m 11h 40m 11h 45m 11h 50m 11h 55m 12h 00m
Index 1 Reference Star, 34 Double Stars, 19 Galaxies Flamsteed 81 Leo... 8 90 Leo... 26 93 Leo... 18 2379... 9 arton 1274... 26 arton 2412... 25 D Delta Leo... 5 H h511... 25 h512... 19 Hipparcos 1586... 3 Hough 534... 20 Hussey 888... 21 K Kustner 41... 24 L LDS 917... 9 N NGC 3501... 14 NGC 3507... 12 NGC 3599... 15 NGC 3605...14 NGC 3607...10 NGC 3608...11 NGC 3626...13 NGC 3646...7 NGC 3655...13 NGC 3684...15 NGC 3686...16 NGC 3691...12 NGC 3701...7 NGC 3815...22 NGC 3827...27 NGC 3834...28 NGC 3837...28 NGC 3886...29 NGC 4014...27 O OSS 112...24 S Sh 130...18 Sh 132...23 STF 1517...4 STF 1531...4 STF 1534...10 STF 1537...5 STF 1549...17 STF 1558...21 STF 1565...23-1 -
STF 1566... 20 STF 1577... 19 STF 1582... 17 T Theta Leo...8 W Weisse 26...3-2 -
, Map 1 Double Stars Easy Weisse 26 DS 5641; HD 95436; SO 81627 Position: 1102+2106 Rating: 4 E Magnitude Separation P Year Spectra Colors 9.40 F5 W 9.96 14.3 + 174 = 1991 W 1893: 14.2 @ 174. 14 measurements. The stars share common proper motion. C8 at 104x. Hipparcos 1586 HD 96497; SO 81677 Position: 1108+2203 Rating: 4 E Magnitude Separation P Year Spectra Colors 8.22 G1 V Y 11.27 11.7 -! 249 + 1991 bw 1 measurement. 1955.228 digitized sky survey plate shows 19.8 @ 240. C11 at 115x. Scale model (in which the Sun is the size of a baseball): Diameter: = 8.70 inches. Separation: = 3.14 miles. Distance (LY): 172 Total luminosity (Suns): 1.26-3 -
STF 1531 HD 98574; SO 81783 Position: 1121+2253 Rating: 4 E Magnitude Separation P Year Spectra Colors 9.28 G5 Y 10.52 23.3 + 167 = 1991 O 1829: 23.1 @ 167. 14 measurements. C8 at 104x. It forms a triangle with two 9m stars. Scale model (in which the Sun is the size of a baseball): Diameter: = 20.9 inches. Separation: = 7.38 miles. Distance (LY): 203 Total luminosity (Suns): 0.8 Difficult STF 1517 ur 1431 (C); DS 8094; HD 97561; SO 81725 Position: 1114+2008 Rating: 4 D Magnitude Separation P Year Spectra Colors 6.93 G5 V Y 6.95 0.5-318 +! 1998? C 10.79 236 +! 99-1988 W? 1829: 1.1 @ 288. Over 100 measurements. lternate spectral types G5 III, G7 IV. Slightly variable. C 1871: 198.7 @ 104. 5 measurements. C11 at 634x. - 4 -
Scale model (in which the Sun is the size of a baseball): Diameter: = 3.00 inches. Separation: = 686 feet; C = 61.5 miles. Distance (LY): 167 Total luminosity (Suns): 7.53 STF 1537 DS 8149; HD 99121; SO 81805 Position: 1125+2037 Rating: 4 D Magnitude Separation P Year Spectra Colors 8.26 G0 W 9.60 2.2-358 + 1997 1831: 2.4 @ 356. 46 measurements. C8 at 206x. Webb saw them both as W. Scale model (in which the Sun is the size of a baseball): Diameter: = 17.2 inches. Separation: = 5,069 feet. Distance (LY): 281 Total luminosity (Suns): 5.6 Delta Leo Rating: 5 D 68 Leo; Zosma, "the girdle"; OS 573; ur 1282; HD 97603; SO 81727 Position: 1115+2031 Magnitude Separation P Year Spectra Colors 2.56 3 V gw 10.92 201.3 +! 343-1988 bw a 13.76 95.4 = 41-1911 No 1850: 180.0 @ 346. 11 measurements. a 1879: 95.4 @ 44. 2 measurements. This star is a member of the Sirius Group and may be a Delta Scuti variable. It rotates at 181 kps. It is also an infra-red source. - 5 -
From James Kaler's Star Zosma is a transliteration of the wrong word, the correct one meaning "hip" or "back." The alternative name, Duhr, is more direct, and comes from an rabic phrase that specifically means "the Lion's back." Zosma is one of the family of numerous white class stars that flock the sky and make such a great part of the constellations. It has a surface temperature of 8,350 Kelvin). Tthe radius may be only about double that of the Sun. Though a seemingly ordinary main sequence (hydrogen fusing) dwarf like the Sun, Zosma has, like any other star, interesting things to recommend it. First, it is a fairly rapid rotator, spinning at a speed of at least 180 kilometers per second at its equator, 90 times solar, giving it a rotational period of less than half a day. Second, it is suspected to be a variable, of a kind called a "Delta Scuti star." These vibrate like subtle Cepheids (of which Mekbuda in Gemini is an example). Zosma's pulsations, however, are greatly suppressed by the natural stability of the main (hydrogen fusing) sequence. Third, it is part of a set of stars that surround us called the "Ursa Major Stream," all of which (including Sirius) share a common motion across the sky. Their physical relation is unclear. Fourth, unlike its neighbor Denebola, Zosma appears to have no surrounding dusty cloud that might be suspected of harboring planets. Finally, Zosma is so well studied that astronomers actually have an age for it. From its current luminosity and temperature (as well as other properties), it is between 600 and 750 million years old. Its mass of 2.2 solar masses allow a total hydrogen-fusing age of around a billion years (a tenth that of the Sun), so Zosma is well over half way toward beginning its death process, when its then-helium core will contract and its outer layers will expand, making it into an orange giant. C8 at 104x. C11 at 115x. was difficult in the glare. Scale model (in which the Sun is the size of a baseball): Diameter: = 8.1 inches. Separation: = 18.2 miles. Distance (LY): 58 Total luminosity (Suns): 24.02-6 -
Deep Sky Objects Moderate NGC 3646 Other Names: UGC 6376; H III 15 stronomical League Program: Herschel II Club Rating: 5 M Position: 1122+2010 Type: Gal Class: S(r)bc pec Magnitude: 11.8 Surface brightness: 13.1 Dimensions: 3.5' x 2' P: 50 Each second, the expansion of the universe takes it as far from you as Los ngeles is from New York City. This galaxy produced supernova 1989N (type II) and 1999cd (also type II). C8 at 104x. It has a large halo and smaller nucleus, flanked by two 10m stars. Its axis runs NE-SW. C11 at 98x. The halo stands out pretty well, and the nucleus is nearly stellar. Model (where the Sun is a baseball): Its diameter would be 91 million miles. Distance (LY): 277,000,000 Luminosity (suns): 114,000,000,000 Radial velocity (km/sec): +4,341 Difficult NGC 3701 Other Names: H II 349; UGC 6493 Rating: 4 D Position: 1129+2405 Type: Gal Class: Sbc Magnitude: 12.9 Surface brightness: 13.2 Dimensions: 2.0' x 0.9' P: 145-7 -
C8 at 104x. Extremely faint oval blur without a sharp nucleus. Nice field 30 min W. Radial velocity (km/sec): +2,806 Reference Star, Map 2 Theta Leo (70 Leo; Chertan; HD 97633; SO 99512) Position: 1114+1526 Mag : 3.3 Spectrum : 2 V Color : W ssumed distance: 178 light years ssumed luminosity (suns): 120 Double Stars Easy 81 Leo Rating: 4 E h4433; HD 99285; SO 99601 Position: 1126+1627 Magnitude Separation P Year Spectra Colors 5.57 F2 V yw 9.20 54.5-1 +!! 1992 W 1840: 58.5 @ 339. 13 measurements. C8 at 83x. Scale model (in which the Sun is the size of a baseball): Diameter: = 5.10 inches. Separation: = X13.1 miles. Distance (LY): 154 Total luminosity (Suns): 11.2-8 -
LDS 917 Position: 1102+1631 Rating: 5 E Magnitude Separation P Year Spectra Colors 11.35 W 11.64 18.7 + 282-1991 W 1895: 18.2 @ 284. 3 measurements. C11 at 115x. Distance (LY): 56 Total luminosity (Suns): 0.012 Moderate 2379 DS 8120 Position: 1118+1636 Rating: 4 M Magnitude Separation P Year Spectra Colors 9.90 bw 10.23 28.7-50 - 1962 po 1911: 29.5 @ 52. 3 measurements. May be optical because Hipparcos gives different distances (87 and 46 light years). has a 9.6m companion at 0.3 @ 20 (1996). C8 at 104x. - 9 -
Difficult STF 1534 DS 8140; HD 98736; SO 99573 Position: 1122+1812 Rating: 2 D Magnitude Separation P Year Spectra Colors 7.93 K6 O! 10.93 5.2 + 317-1991! 1828: 4.8 @ 342. 63 measurements. C8 at 516x. n easy split, but is very difficult. Scale model (in which the Sun is the size of a baseball): Diameter: = 34.4 inches. Separation: = 4,382 feet. Distance (LY): 103 Total luminosity (Suns): 0.62 Deep Sky Objects Easy NGC 3607 Other Names: UGC 6297; H II 50 stronomical League Program: Herschel 400 Club Rating: 2 E Position: 1117+1803 Type: Gal Class: S(s)0 o : Magnitude: 11.2 Surface brightness: 12.9 Dimensions: 1.5' x 1.3' P: 120 Leo I Cloud member. It may have recently interacted with NGC 3608. It is also very close (36,000 light years) to NGC 3605. - 10 -
C8 at 83x. Very bright and easy, it has a stellar nucleus. C11 at 193x. Very bright and large, it gets gradually brighter to the middle, which is much brighter all of a sudden, but not quite stellar. Model (where the Sun is a baseball): Its diameter would be 6 million miles. Distance (LY): 46,000,000 Luminosity (suns): 5,500,000,000 Radial velocity (km/sec): +935 NGC 3608 Other Names: UGC 6299; H II 51 stronomical League Program: Herschel 400 Club Rating: 3 E Position: 1117+1809 Type: Gal Class: E3 Magnitude: 12.2 Surface brightness: 12.6 Dimensions: 3' x 2.5' P: 75 Leo Group member. Unusual motion in the stars in the outer envelope of the galaxy suggest a near encounter (but not merger) with another galaxy. C8 at 83x. Very small; it shows a nearly starlike nucleus and E-W halo. C11 at 193x. Smaller than NGC 3607, it very gradually brightens to the center, but is not quite stellar at the nucleus. Model (where the Sun is a baseball): Its diameter would be 19 million miles. Distance (LY): 67,000,000 Luminosity (suns): 4,600,000,000 Radial velocity (km/sec): +1,235-11 -
Moderate NGC 3507 Other Names: H IV 7; UGC 6123 stronomical League Program: Herschel II Club Rating: 3 M Position: 1104+1808 Type: Gal Class: S(s)b Magnitude: 10.9 Surface brightness: 13.0 Dimensions: 3.4' x 2.8' P: 110 C8 at 206x. n 11m star is superimposed. t first, I thought this galaxy was that star, but closer examination showed a tiny halo around the star. It is flanked N and S by 10m stars. Moderately rich field. Distance (LY): 38,000,000 Total luminosity (Suns): 5,000,000,000 Radial velocity (km/sec): +979 NGC 3691 Other Names: H II 54; UGC 6464 Rating: 3 M Position: 1128+1655 Type: Gal Class: Sb? Magnitude: 11.8 Surface brightness: 11.4 Dimensions: 1.1' x 0.9' P: 15 C8 at 104x. Stellar nucleus with very small halo. Distance (LY): 39,000,000 Total luminosity (Suns): 2,300,000,000 Radial velocity (km/sec): +1,085-12 -
NGC 3626 Rating: 5 M Other Names: UGC 6343; H II 52 stronomical League Program: Caldwell Club, Herschel 400 Club Position: 1120+1821 Type: Gal Class: (R)S(rs)0+ Magnitude: 11.4 Surface brightness: 12.5 Dimensions: 2' x 1' P: 175 Leo I Cloud member, it is 190,000 light years in diameter, a true giant! The gas in the arms is rotating in the opposite direction of the stars! This may be evidence of a merger. C8 at 83x. right, but featureless at all powers, and with a stellar nucleus. It runs NW-SE. Model (where the Sun is a baseball): Its diameter would be 6 million miles. Distance (LY): 31,000,000 Luminosity (suns): 2,100,000,000 Radial velocity (km/sec): +1,362 NGC 3655 Other Names: H I 5; UGC 6396 stronomical League Program: Herschel 400 Club Rating: 5 M Position: 1123+1635 Type: Gal Class: S(s)c: III-IV Magnitude: 11.6 Surface brightness: 11.8 Dimensions: 1.6' x 1.0' P: 30 This galaxy produced supernova 2002ji (type Ib or Ic). C8 at 104x. Small bright nucleus; a 10m star lies 7 min SE. It had a small halo. The double 35 Leo is 35 min E. Radial velocity (km/sec): +1,473-13 -
Difficult NGC 3501 Other Names: UGC 6116 Rating: 4 D Position: 1103+1759 Type: Gal Class: Scd: Magnitude: 12.9 Surface brightness: 13.3 Dimensions: 3.8' x 0.5' P: 27 C8 at 206x. It took about 3 minutes of patient viewing before it slowly faded into view a most stunning effect! It looks like a ghostly spindle running roughly N-S. Moderate field. Radial velocity (km/sec): +1,130 NGC 3605 Other Names: UGC 6295; H III 27 stronomical League Program: Herschel II Club Rating: 4 D Position: 1117+1801 Type: Gal Class: E3 Magnitude: 13.0 Surface brightness: 11.8 Dimensions: 1.7' x 1' P: 17 Leo II Group member. C8 at 83x. Shares the field with NGC 3607 and NGC 3608. This one is farthest S and smallest and faintest. The axis runs N-S. NGC 3607 lies to the E (it is the largest and brightest) and NGC 3608 is a little N. NGC 3605 is somewhat round and mostly featureless. Radial velocity (km/sec): +668-14 -
NGC 3599 Other Names: H II 49; UGC 6281 stronomical League Program: Herschel II Club Rating: 5 D Position: 1115+1807 Type: Gal Class: S0: Magnitude: 11.9 Surface brightness: 13.8 Dimensions: 3' x 3' C8 at 83x. Very low surface brightness disk about 2 min N of a 13m star. No features seen. C11 at 193x. Very very faint without much brightening. No details. Radial velocity (km/sec): +835 NGC 3684 Other Names: UGC 6453 Rating: 5 D Position: 1127+1702 Type: Gal Class: S(rs)bc II-III Magnitude: 12.4 Surface brightness: 13.3 Dimensions: 1.4' x 1' P: 130 C8 at 83x. Very faint and running NW-SE, with a slightly brighter nucleus. Model (where the Sun is a baseball): Its diameter would be 9 million miles. Distance (LY): 66,000,000 Luminosity (suns): 4,000,000,000 Radial velocity (km/sec): +1,329-15 -
NGC 3686 Other Names: H III 28; UGC 6460; H II 160 stronomical League Program: Herschel 400 Club Rating: 5 D Position: 1128+1713 Type: Gal Class: S(s)bc II Magnitude: 12.0 Surface brightness: 13.2 Dimensions: 2' P: 15 C8 at 65x. The galaxy is round with no obvious nucleus. n 11m star lies 3 min N. Rich field. Model (where the Sun is a baseball): Its diameter would be 12 million miles. Distance (LY): 65,000,000 Luminosity (suns): 5,200,000,000 Radial velocity (km/sec): +1,156-16 -
, Map 3 Double Stars Easy STF 1582 DS 8352; HD 103628; SO 82058 Position: 1156+2159 Rating: 3 E Magnitude Separation P Year Spectra Colors 8.04 F8 IV W 9.64 12.0 = 75-1991 F8 1827: 12.0 @ 77. 22 measurements. Hipparcos/Tycho data show different distances for these stars; they may be optical. However, the stars exhibit common proper motion. C8 at 83x. Scale model (in which the Sun is the size of a baseball): Diameter: = 8.40 inches; = 16.4 inches. Separation: = 6.61 miles. Distance (LY): 353 Total luminosity (Suns): 7 STF 1549 DS 8204 Position: 1133+2419 Rating: 4 E Magnitude Separation P Year Spectra Colors 9.49 K0 Y 11.16 13.0-113 - 1991 W 1828: 14.0 @ 116. 22 measurements. The stars show similar proper motions. - 17 -
C8 at 104x. It lies 7 min E of an 8m Y star. Scale model (in which the Sun is the size of a baseball): Diameter: = 26.5 inches. Separation: = 1.56 miles. Distance (LY): 77 Total luminosity (Suns): 0.12 Sh 130 HD 102428; SO 81994 Position: 1147+2002 Rating: 4 E Magnitude Separation P Year Spectra Colors 7.36 F5 Iab W 9.89 74-28 + 1918 G5 V Hipparcos/Tycho data show different distances for these stars (301 and 98 light years); they may be optical. The stars have different proper motions. 1823: 77 @ 25. C8 at 104x. 93 Leo Rating: 4 E DQ Leo; SI 7; HD 102509; SO 81998 Position: 1148+2012 Magnitude Separation P Year Spectra Colors 4.59 G4 III D! 9.03 74.5 + 356 = 1991 7 V 1836: 74.3 @ 356. 20 measurements. Star is a spectroscopic binary with a 71.70 day period, as well as an infra-red source. The stars share common proper motion. - 18 -
C8 at 83x. Webb saw them as Y and W, and wrote, "curious field." C8 at 104x. I used a Celestron MicroGuide and measured 76" @ 355. Scale model (in which the Sun is the size of a baseball): Diameter: = 37.5 inches; = 6.75 inches. Separation: = 26.4 miles; a = 9.06 feet. Distance (LY): 227 Total luminosity (Suns): 65.6 STF 1577 DS 8334; SO 82033 Position: 1153+2019 Rating: 4 E Magnitude Separation P Year Spectra Colors 9.96 F5 W 11.60 8.6 + 10-1986 po 1828: 8.2 @ 11. 14 measurements. C11 at 115x. h512 SO 82044 Position: 1154+2442 Rating: 4 E Magnitude Separation P Year Spectra Colors 9.86 F8 V W 12.30 24.2 + 154-1988 No C 10.10 24.2-336 + 1991 W 1897: 19.7 @ 162. 2 measurements. C 1874: 28.8 @ 328. 10 measurements. C8 at 104x. - 19 -
Scale model (in which the Sun is the size of a baseball): Diameter: = 3.60 inches. Separation: = 12.5 miles; C = 12.5 miles. Distance (LY): 332 Total luminosity (Suns): 2 Hough 534 DS 8376 Position: 1159+2052 Rating: 4 E Magnitude Separation P Year Spectra Colors 9.22 F8 W 12.15 10.5 + 137 = 1991? 1897: 9.8 @ 137. 11 measurements. C11 at 115x. This pair is the northeast vertex of a 10m triangle. Scale model (in which the Sun is the size of a baseball): Diameter: = 16.1 inches. Separation: = 5.03 miles. Distance (LY): 307 Total luminosity (Suns): 1.61 Moderate STF 1566 DS 8263; HD 101469; SO 81940 Position: 1141+2102 Rating: 5 M Magnitude Separation P Year Spectra Colors 8.75 G5 W 10.13 2.4-350 + 1998? 1829: 2.7 @ 349. 28 measurements. - 20 -
C8 at 280x. Scale model (in which the Sun is the size of a baseball): Diameter: = 20.3 inches. Separation: = 3.10 miles. Distance (LY): 830 Total luminosity (Suns): 37 Difficult Hussey 888 DS 8275; HD 101770; SO 81952 Position: 1143+2105 Rating: 3 D Magnitude Separation P Year Spectra Colors 8.82 F5 W 9.14 0.6-177 + 1999 W 1904: 0.7 @ 149. 40 measurements. C11 at 634x. I got a snowman at this power. Scale model (in which the Sun is the size of a baseball): Diameter: = 13.7 inches. Separation: = 1.13 miles. Distance (LY): 1,210 Total luminosity (Suns): 60 STF 1558 DS 8238; HD 100869 Position: 1134+2145 Rating: 4 D Magnitude Separation P Year Spectra Colors 9.92 G5 W 10.24 1.2-162 + 1991 W C 8.80 43.5-277 + 1985 W - 21 -
1828: 1.4 @ 158. 34 measurements. C 1829: 43.7 @ 276. 24 measurements. C8 at 697x. t times, a figure 8, at other (brief) moments, barely split. Deep Sky Objects Difficult NGC 3815 Other Names: H III 339; UGC 6654 Rating: 5 D Position: 1142+2449 Type: Gal Class: Sab Magnitude: 13.0 Surface brightness: 13.3 Dimensions: 1.9' x 1.0' P: 72 C8 at 104x. very faint glow with a sharp nucleus. Radial velocity (km/sec): +3,711-22 -
, Map 4 Double Stars Easy STF 1565 DS 8257; HD 101302; SO 99717 Position: 1140+1900 Rating: 3 E Magnitude Separation P Year Spectra Colors 7.20 F0 IV W 8.50 21.6 + 304 = 1991 F0 III O 1829: 21.5 @ 304. 44 measurements. Hipparcos/Tycho data show different distances for these stars; they may be optical. However, the stars show similar proper motion. C8 at 83x. Scale model (in which the Sun is the size of a baseball): Diameter: = 8.40 inches; = 10.8 inches. Separation: = 20.9 miles. Distance (LY): 620 Total luminosity (Suns): 52 Sh 132 HD 103152; SO 99840 Position: 1153+1526 Rating: 3 E Magnitude Separation P Year Spectra Colors 6.84 2 W 9.80 39 = 14 = 1981 ro C 11.50 90.8-264 - 1922 W? 1823: 38.9 @ 14. 18 measurements. The stars share common proper motion. - 23 -
C 1914: 90.5 @ 265. 2 measurements. C8 at 83x. Scale model (in which the Sun is the size of a baseball): Diameter: = 6.53 inches. Separation: = 20.5 miles; C = 47.8 miles. Distance (LY): 337 Total luminosity (Suns): 18.22 OSS 112 HD 103432; SO 99858 Position: 1155+1925 Rating: 3 E Magnitude Separation P Year Spectra Colors 8.19 G0 W 8.43 73.5 + 35 = 1994 G5 W 1875: 73.1 @ 35. 20 measurements. The stars share a very large common proper motion. C8 at 104x. Scale model (in which the Sun is the size of a baseball): Diameter: = 17.1 inches; = 19.9 inches. Separation: = 13.9 miles. Distance (LY): 121 Total luminosity (Suns): 1.1 Kustner 41 DS 8351 Position: 1156+1654 Rating: 3 E Magnitude Separation P Year Spectra Colors 9.99 G0 W 10.02 5.4 + 69-1991 G0 W 1895: 4.7 @ 70. 17 measurements. - 24 -
C11 at 115x. arton 2412 Position: 1144+1831 Rating: 4 E Magnitude Separation P Year Spectra Colors 9.42 K5 W 9.64 4.9 = 292 = 1991 W 1894: 4.9 @ 292. 4 measures. C11 at 115x. Scale model (in which the Sun is the size of a baseball): Diameter: = 37.3 inches. Separation: = 1.08 miles. Distance (LY): 142 Total luminosity (Suns): 0.486 h511 HD 102927; SO 99828 Position: 1151+1851 Rating: 4 E Magnitude Separation P Year Spectra Colors 9.02 K0 Y 11.73 34.0-246 = 1989? 1911: 35.0 @ 246. 3 measurements. C8 at 104x. Scale model (in which the Sun is the size of a baseball): Diameter: = 25.8 inches. Separation: = 42.4 miles. Distance (LY): 800 Total luminosity (Suns): 11-25 -
90 Leo Rating: 2 M STF 1552; DS 8220; HD 100600; SO 99673 Position: 1135+1647 Moderate Magnitude Separation P Year Spectra Colors 5.95 3 V W 7.06 3.4-209 + 1997 6 W C 8.70 62.1-236 + 1959 F 1820: 4.5 @ 206. Over 100 measurements. The stars share common proper motion. C 1822: 63.1 @ 234. 31 measurements. Star is a spectroscopic binary and rotates at 117 kps. C8 at 206x. Webb saw them as W and bw. arton 1274 Position: 1141+1536 Rating: 4 M Magnitude Separation P Year Spectra Colors 10.72 F8 W 11.01 2.9 + 328 + 1999 W 1933: 2.7 @ 327. 4 measurements. C11 at 193x. - 26 -
Deep Sky Objects Moderate NGC 3827 Other Names: UGC 6673 Rating: 4 M Position: 1143+1851 Type: Gal Class: Sa Magnitude: 13.3 Surface brightness: 12.7 Dimensions: 54" x 48" P: 65 C11 at 140x. Very starklike nucleus without a halo. 9.1m star lies 5 min S. Radial velocity (km/sec): +3,132 NGC 4014 Other Names: NGC 4028; UGC 6961 Rating: 4 M Position: 1159+1611 Type: Gal Class: S0/a Magnitude: 12.3 Surface brightness: 13.3 Dimensions: 2.2' x 1.3' P: 120 C11 at 140x. ghostly oval patch that forms an isosceles triangle with two field stars (10m, 12m). Radial velocity (km/sec): +3,763-27 -
Difficult NGC 3837 Other Names: UGC 6701 Rating: 4 D Position: 1144+1954 Type: Gal Class: E Magnitude: 13.3 Surface brightness: 12.2 Dimensions: 36" Member of the large galaxy cluster bell 1367. C11 at 140x. Fuzzy stellar nucleus and no halo. Very stellar at first glance. Radial velocity (km/sec): +6,130 NGC 3834 Other Names: PGC 36443 Rating: 5 D Position: 1144+1905 Type: Gal Class: S0 Magnitude: 13.4 Surface brightness: 13.6 Dimensions: 1.4' x 1' P: 130 This galaxy produced supernova 1968F. C11 at 140x. Very, very faint and small round patch with no noticeable nucleus. 12m star lies 8 min NE. Radial velocity (km/sec): +6,824-28 -
NGC 3886 Other Names: UGC 6760 Rating: 5 D Position: 1147+1950 Type: Gal Class: S0-: Magnitude: 13.1 Surface brightness: 13.0 Dimensions: 1.2' x 0.9' P: 132 C11 at 140x. Small, very faint blip without a nucleus. Two field stars (11m, 12m) point right at it. Radial velocity (km/sec): +5,767-29 -
Mini-Catalog Double Stars Designation Position Rating Map Component Mag Separation P STF 1565 1140+1900 3E 4 7.20 8.50 21.6 + 304 = Sh 132 1153+1526 3E 4 C 6.84 9.80 11.50 39 = 90.8-14 = 90.8 - OSS 112 1155+1925 3E 4 8.19 8.43 73.5 + 35 = Kustner 41 1156+1654 3E 4 9.99 10.02 5.4 + 69 - STF 1582 1156+2159 3E 3 8.04 9.64 12.0 = 75-9.40 Weisse 26 1102+2106 4E 1 Hipparcos 1586 1108+2203 4E 1 STF 1531 1121+2253 4E 1 81 Leo 1126+1627 4E 2 STF 1549 1133+2419 4E 3 arton 2412 1144+1831 4E 4 Sh 130 1147+2002 4E 3 93 Leo 1148+2012 4E 3 h511 1151+1851 4E 4 STF 1577 1153+2019 4E 3 h512 1154+2442 4E 3 Hough 534 1159+2052 4E 3 LDS 917 1102+1631 5E 2 90 Leo 1135+1647 2M 4 2379 1118+1636 4M 2 arton 1274 1141+1536 4M 4 STF 1566 1141+2102 5M 3 C C 9.96 8.22 11.27 9.28 10.52 5.57 9.20 9.49 11.16 9.42 9.64 7.36 9.89 4.59 9.03 9.02 11.73 9.96 11.60 9.86 12.30 10.10 9.22 12.15 11.35 11.64 5.95 7.06 8.70 9.90 10.23 10.72 11.01 8.75 10.13 14.3 + 11.7 -! 23.3 + 54.5-13.0-4.9 = 74-74.5 + 34.0-8.6 + 24.2 + 24.2-10.5 + 18.7 + 3.4-62.1-28.7-2.9 + 2.4-174 = 249 + 167 = 1 +!! 113-292 = 28 + 356 = 246 = 10-154 - 24.2-137 = 282-209 + 62.1-50 - 328 + 350 + - 30 -
Designation Position Rating Map Component Mag Separation P STF 1534 1122+1812 2D 2 7.93 10.93 5.2 + 317 - Hussey 888 1143+2105 3D 3 8.82 9.14 0.6-177 + STF 1517 1114+2008 4D 1 C 6.93 6.95 10.79 0.5-236 +! 318 +! 236 +! 8.26 STF 1537 1125+2037 4D 1 STF 1558 1134+2145 4D 3 Delta Leo 1115+2031 5D 1 C a 9.60 9.92 10.24 8.80 2.56 10.92 13.76 2.2-1.2-43.5-201.3 +! 95.4 = 358 + 162 + 43.5-343 - 41 - Deep Sky Objects Specifications Surface Object Position Rating Map Type Mag r NGC 3607 1117+1803 2E 2 Gal (S(s)0 o :) 11.2 12.9 NGC 3608 1117+1809 3E 2 Gal (E3) 12.2 12.6 NGC 3507 1104+1808 3M 2 Gal (S(s)b) 10.9 13.0 NGC 3691 1128+1655 3M 2 Gal (Sb?) 11.8 11.4 NGC 3827 1143+1851 4M 4 Gal (Sa) 13.3 12.7 NGC 4014 1159+1611 4M 4 Gal (Sa) 12.3 13.3 NGC 3626 1120+1821 5M 2 Gal ((R)S(rs)0+) 11.4 12.5 NGC 3646 1122+2010 5M 1 Gal (Ring I-II) 11.8 13.1 NGC 3655 1123+1635 5M 2 Gal (S(s)c: III-IV) 11.6 11.8 NGC 3501 1103+1759 4D 2 Gal (Scd:) 12.9 13.3 NGC 3605 1117+1801 4D 2 Gal (E3) 13.0 11.8 NGC 3701 1129+2405 4D 1 Gal (Sbc) 12.9 13.2 NGC 3837 1144+1954 4D 4 Gal (E) 13.3 12.2 NGC 3599 1115+1807 5D 2 Gal (S0:) 11.9 13.8 NGC 3684 1127+1702 5D 2 Gal (S(rs)bc II-III) 12.4 13.3 NGC 3686 1128+1713 5D 2 Gal (S(s)bc II) 12.0 13.2 NGC 3815 1142+2449 5D 3 Gal (Sa) 13.0 13.3 NGC 3834 1144+1905 5D 4 Gal (S) 13.4 13.6 NGC 3886 1147+1950 5D 4 Gal (S0-:) 13.1 13.0 Population - 31 -