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RA: 06h 21m 39.5s
Dec: −27° 14′ 0″
Con: Canis Major
Ch: MSA:371, U2:317, SA:19
Type: galaxy, SBa
Mag: B=11.45, V=10.42
Size: 4.677′ x 4.168′
Discovered by Sir John Herschel at the Cape of Good Hope with an 18-inch f/13 speculum telescope. He recorded it as "B, R, psmbM, 30 arcseconds." On a second occassion he called it "vB, R, psmbM, 30 arcseconds, resolvable."
Burnham calls this 12.0 mag barred spiral galaxy in Canis Major, 4.0' x 3.0', which is pretty bright, small, slightly elongated and pretty suddenly brighter in the middle.
The RNGC (Sulentic and Tifft 1973) notes that this is a 12.0 mag galaxy. Their coded description reads SB,BBAR&NUC,DIFOARMS.
This galaxy appears on page 43 of "The Hubble Atlas of Galaxies" by Allan Sandage (1961, Washington, DC).
by Jim Lucyk: Hubble Atl.of Gal. (Sandage 1961) p43, Cat.of South.Peculiar Gal.and Ass. Vol 2 (Arp&Madore, 1987) p10.3.
(1961, Astronomical Journal, Vol 66) notes that this galaxy could be a radio source. He remarks: "Apparently normal SBa. Not in cluster."
Included in the CCD-atlas of Ryder S.D. & Dopita M.A. (1993) "An H-alpha Atlas of Nearby Southern Spiral Galaxies" Astrophys.J.Suppl. 88, 415. They note: "This is the earliest-type galaxy in the atlas, and good test of the detection efficiency of our imaging system. It is classified as a late-type lenticular galaxy, and not surprisingly, exhibits barely any star formation activity."
de Vaucouleurs, G. (1975) Nearby groups of galaxies. In: Kuiper, G. (ed) Stars and Stellar Systems. Volume 9: Galaxies and the Universe. Chapter 14, p557.
This little known southern group in low galactic latitudes has the highest supergalactic latitude of all the nearby groups.
Brightest members: 2207 ( B(0) = 11.54), 2217 ( B(0) = 11.69), 2223 ( B(0) = 12.18), 2280 ( B(0) = 12.24), 2139 ( B(0) = 12.39).
("Galaxies and the Universe", Chapter 14 - Nearby Groups of Galaxies) notes that the five brightest members of the NGC 2207 Group are NGC 2207, NGC 2217, NGC 2223, NGC 2280 & NGC 2139.
BN with atmosphere, vF external strucutre susp.
pF, 4'x4', probably spiral, but shows no very definite spiral characteristics; consists of very faint outer ring 4' diameter at the centre of which is a psi-type nebula with a large, bright nucleus, like a bright globular nebula; the line through this is E 120deg, and mb than the inner ring, the n.p. portion of which appears to have suffered absorption. See HOB 15.
Lorenzin, in the electronic version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "12M; 4'x 3' extent; bright oblong with brighter center, but no stellar core; see photo at HAG-43."
Steve Coe, using a 17.5" f/4.5, notes: "Small, Elongated 2X1 with averted vision, Bright Nucleus at 150X."
Hubble: brtr part pa115; *s 1'.5 W.
POSS: NErn/closer of two m13 *s is 1'.25 W, lies on (R) of gx. (R) is sl
elong in pa~30, i.e. perpendicular to core.
15cm - sm, mod f, 1' diam, round. f * on W.
- mod br sharply concen glow consp @ 50x. 140x: lg vlosfcbr halo 2'.5
diam reaching at least as far as Nrn and fntr of two m13 *s W. this
halo has only wkst concen, elong in pa~120. core has much higher sfcbr,
a tiny 25"x20" oval in pa120 w/strong sharp concen to sub*ar nuc. nuc
seems dbl as though it has a * on its E edge. BS, 23Feb1990, LCO.
25cm - two *s on W. poss elong in pa120, 0'.8 diam. much brtr broad core, no
nuc. *ry fld.
30cm - vsm w/ two un= mag *s 1' W. well concen w/a 10" core and *ar nuc. elong
in pa120, 1'x0'.75, almond-shaped. vf patch vis ~1'.5 to the opposite
side of the above-mentioned *s, vf haze reaching reaching out from gx to
it. vinner core seems elong NE-SW, perpendic to maj elong.
Observing site: Fall Star Party
[6h 21m 42s, -27° 14' 0"] Looks like a star with a halo around it. Bright, but hard to see amongst the rich star field it's in. B: SBa.
Sky Conditions:The fainter parts of the Milky Way are barely visible.Haziness only visible on the horizon.Atmosphere stable with little interference.
This galaxy has a round shape which is almost oblong like a baked bean being seen at 75x.This galaxy has a tight nucleus where the stars in this galaxy are spherically concentrated towards each other in a soft halo of faint light.There are some areas of uneven brightness around the outskirts of this galaxy.This galaxy measures 3.5'x 1.7'.Chart No.92,NSOG Vol.1.
The Messier objects
The Bennett objects
The Caldwell list
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