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RA: 13h 30m 11.42s
Dec: +46° 40′ 16.2″
Con: Canes Venatici
Ch: MSA:589, U2:76, SA:7
Type: galaxy (in pair), E
Mag: B=13.2, V=?
Size: 1.995′ x 1.698′
Synonyms: H II-689
Discovered in 1787 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "pB, pL, R, mbM."
The RNGC (Sulentic and Tifft 1973) notes that this is a 13.0 mag galaxy. Their coded description reads E,R,BM.
Burnham calls it a 12.9 mag elliptical galaxy in Canes Venatici, measuring 0.7' x 0.5' , which he describes as "pretty faint, pretty small, slightly elongated and much brighter in the middle."
Houston notes that this galaxy lies about half a degree south of M51. "Some years ago, using an 8-inch telescope in the Mojave Desert, I saw the galaxy's small disk as a featureless, almost circular object less than 1' across."
MacRobert writes that this galaxy is "usually overlooked by amateurs [and] lies half a degree south of M51. NGC 5198 forms the fourth corner of a little rectangle with three faint stars. I couldn't swear I saw it at all in the 6-inch at 110x [under moderately light-polluted skies.]"
POSS: m14-14.5 * 44" W.
Lick: I4263 19' WNW; N5173 19'.5 WSW.
15cm - in dk sky, sm & mod br. 1' diam w/*ar nuc. * N.
- mod f, circ, 0'.8 diam. mod even concen, no distinct core or nuc.
threshold * on W: gx is a bit lgr than distance from center to *. two
other *s farther NNE, brtr one is m13.5. BS, 26Mar1988, Anderson Mesa.
25cm - in dk sky: round w/*ar nuc. pair of *s N; threshold * W.
30cm - sm, 45" diam, fairly well concen in pa120-140. m14.5 * 0'.5 W.
- br, round. 2' diam w/30" core. m14 * 1' N, m14.5 * 40" in halo.
The Messier objects
The Bennett objects
The Caldwell list
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