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RA: 12h 13m 48.37s
Dec: +14° 53′ 58″
Con: Coma Berenices
Ch: MSA:726, U2:193, SA:13
Type: galaxy (AGN LINER-type)
Mag: B=11, V=?
Size: 9.772′ x 2.454′
NGC 4192. See NGC 4186.
In the Appendix to the 1912 'Scientific Papers of Sir William Herschel' this object is described as "1787, January 14. vB, mE, above 15' long, a BN in the middle."
Sanford calls it "a large spiral seen almost edge-on, about 3' x 9' in size and of 10th magnitude. This galaxy is a member of the Virgo Cluster.
The RNGC (Sulentic and Tifft 1973) notes that this is a 11.0 mag galaxy. Their coded description reads SB,B,MINC,DKPCHS CT.
Doig, P. (1925) Notes on the nebulae and clusters in Webb's 'Celestial Objects for Common Telescopes' (Sixth edition, Vol.ii). Part V. M.N.R.A.S., 36(3), 89.
Hartung notes that "10.5cm will show a faint streak in the dark field . . appears with 30cm as a fairly bright pointed spindle about 7' x 1' in pa 150 deg rising in brightness to the long axis with a round bright centre . . a very faint small haze 5' south-preceding is NGC 4186."
Tom Lorenzin, in the electronic version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "10M; 8.2' x 2' extent; knotty, bright spindle with axis oriented NNW-SSE; brighter center though no apparent nucleus; bright star 30' E is 5M 6 COM; !good supernova prospect!."
33cm plate: m12.0 * 2'.7 NNE. m12.5 * 7'.0 in pa335.
T&B: * NE V=13.1
6cm - not bad after scrutiny: 5'x2' in pa150. barely, irreg concen to vmottled
middle. * NE not vis, thus fntr than m12.0.
7cm - lg mod br spindle of modlosfcbr. elong pa150 w/mod broad concen along
length. inconsp oval core and vf occas sparkle at center. m13 * off NE
flank. BS, 15Apr1993, Anderson Mesa.
13cm - huge spindle in pa150. m12.5-13 * due N of nuc, which looks like m13 *
and seems just N of center. BS, 5Feb1984, USNO.
15cm - mod br and vinteresting gx. seems to have a lg broad irreg br core. dk
lane on W side suspected. mottled w/fntr extensions. 6'x2'.
25cm - br and much elong, about 6'x2'. sm 30" nuc and broad haze. somewhat
patchy. sev *s embedded in neb.
30cm - elong SE-NW, 7'x1'. arms faint, core not much brtr. some mottling in
core. 3' N is m10.5 *.
- not well concen, elong bar in pa140, 6'.5x1'.5. core circ, 50" across
w/occas sub*ar nuc. appears gran. arms smooth, no swelling at center
(a spindle, man -BS).
- reaches about halfway to m12.5 * NW. nuc still *ar but normally
located. oval core vsm, doesn't stand out well; it is somewhat NE of
center laong minor axis, i.e. NE flank more sharply defined. SE end of
halo both fntr and less extensive than to NW. BS, 5Feb1984, USNO.
Alldays (22.50S, 20.12E, 770m).
12-inch f/10 SCT (218x)
This galaxy show off a nice elongated spindle shape which is almost as I estimate it against the star field 8' long In a NNW to SSE direction. Slowly brighten to the core. I try 4192A, with averted vision I suspect it.
Observing site: Pinnacles overlook
[12h 13m 48s, 14° 54m 0s] This looks like an edge on Sc (Burnham: Sb), with a faint elongated disc and a bright round nucleus. It's best at low power (72x, 56mm), becoming diffuse in the 18mm.
Sky Conditions:The fainter parts of the Milky Way are barely visible.Haziness only visible on the horizon.Atmosphere stable with little interference.
This spiral galaxy's bright dust arms are both seen at a magnification of 57*and 75*.The nucleus is somewhat oval and that this galaxy has an elongated appearance as a sofy grayish smudge of light.This galaxy measures 7.1'* 1.4'with PA NNE/SSW.From the nucleus of this galaxy the nucleus grows brighter compared to the spiral arms of this galaxy.
The Messier objects
The Bennett objects
The Caldwell list
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