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RA: 20h 43m 53.4s
Dec: +12° 30′ 41″
Ch: MSA:1240, U2:209, SA:16
Type: galaxy (in group), SBb
Mag: B=13.5, V=?
Size: 1.862′ x 1.584′
Synonyms: H III-219
Discovered in 1784 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "eF, vS, stellar, verified with 240 power with difficulty."
The RNGC (Sulentic and Tifft 1973) notes that this is a 13.5 mag galaxy. Their coded description reads S,HISB,KNY,BM,RI*FLD.
Steve Coe, in "SACNEWS On-line for August 1996", using a 13-inch reflector, notes: NGC 6956 is a little galaxy beside the Milky Way at 20 44.0 +12 30. I saw it as pretty faint, small, very little elongated 1.2 X 1 in PA 90, very little brighter middle at 150X. There is a nice double star involved on the east side; it is 11th and 13th mag, separation about 8 arcseconds in a PA of 90 degrees.
Steve Coe, observing with a 13" f/5.6, notes: "Pretty faint, small, very little elongated 1.2 X 1 in PA 90, very little brighter middle at 150X. There is a nice double star involved on the east side, 11 and 13th mag, 8 arcsec, PA 90."
Date: 10/04/1999 ; Loc.: Anderson Mesa, Flagstaff AZ; Weather: Clear, calm, temps in mid 30's; Scope: 10-inch, f/4.5 equatorial mount Newtonian; Eyepiece (Mag.): 18 mm SWA w/ 3x TeleVue Barlow (190x); 8.8 mm UWA (129x)
First up, NGC 6956. This 12.3 magnitude spiral galaxy is located just about four degrees due west of 15 Del. A 6.7 magnitude star, SAO 106443 resides 20' to the Southeast. The galaxy displayed a circular shape with a 40" diameter at 190x. Two faint stars, 13th and 14th magnitude were visible through the eastern third of the nebula.
POSS: SB(rs)b II [BS]. comp to br * is f dbl ~20" E of primary. no * sup
nr or N of center.
15cm - nope. BS, 6Jun1981, Slate Mtn.
- fairly f w/m11.5 * (not 10.5 as per L&S) on ENE, which seems in halo. this * has m14-14.5 comp E of it. halo approx circ, 40" diam. m14-14.5 * (= *ar nuc of L&S?) seems N of center. diffuse w/wk broad concen. BS, 22Jun1990, Anderson Mesa.
25cm - vis @ 63x. 190x: has m10.5 * on E edge; uniformly hisfcbr, but * interferes w/viewing. elong indef, 0'.75 diam, m14 *ar nuc or sup *, no other brtning besides nuc. BS, 6Jun1981, Slate Mtn.
The Messier objects
The Bennett objects
The Caldwell list
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