| Object/type: | M 105 / Elliptical Galaxy |
| mag/dia/dist: | 9.3,SB:12.1 / 5.4' X 4.8' / 26,000,000 ly |
| constellation: | Leo |
| date/time/place: | Dec 21, 01 / 04:20 / bangkok |
| trans'y/seeing/l-poll: | goog / good / medium-low |
| telescope: | newtonian 4.5" f8.8 |
| eyepieces/power: | 25mm / 40x |
| sky atlas page: | 13 |
Position on sketch: M 105 is at lower center, NGC3384 is at upper center, The arrow showed Satellite pass during observing
Observing details: This observing session was continue from M65/M66. Aim Telescope to Chertan in Leo, Star 73 and fainter companion also appear in the same FOV of finderscope. Hop from star 73 to two stars mag6.5 (on west) which point to stars 52 & 53. Center at Stars 52 & 53, look for two stars mag7. M105 locates at the crossing point of straight lines, the first line link between star 52 and star 53, the second line link between two stars mag7. At eyepiece, M105 appeared as very faint, round, small and unstable according to seeing & light pollution conditions. NGC3384 also could be observed as quite small like a fuzzy star (I wonder why Messier didn't include this object to his list?)
Refer to text: very bright, large and round, very bright nucleus. Extends 30,000 ly, Hubble class E1. A member of Leo galaxy group, paired with NGC3384 galaxy class E7
Note: The Messier Object by O'Meara, page 274, stated that NGC3384 is spiral, but SkyAtlas Companion stated that it is very elongated Elliptical class E7.
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