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NGC 6196 (13,856 of 18,816)


oc gc pln bn dn gx gxcl ast aka lost




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NGC 6196

NGC 6196, IC 4615, LEDA 58644, MCG+06-36-058, UGC 10482, GC 5823

RA: 16h 37m 53.9s
Dec: +36° 04′ 23″

Con: Hercules
Ch: MSA:1159, U2:114, SA:8

Ref: SIMBAD, Corwin

(reference key)

Type: galaxy (in group), S0

Mag: B=13.68, V=?

Size: ?
PA: ?

History and Accurate Positions for the NGC/IC Objects (Corwin 2004)

NGC 6196 = IC 4615, NGC 6197 = IC 4616, and NGC 6199. N6196 is the second brightest of a small group of galaxies headed up by NGC 6194 (discovered by John Herschel). Marth's discovery positions for N6196 and N6197 are 38 seconds of time preceding and 1.3 arcmin north of the true positions.

If this same offset applies to NGC 6199, then one of the two stars near the resulting position is likely the object that Marth saw. Though I pointed to the brighter of the two during preparation of RC2 as N6199, it has m = 12.0 in GSC which would almost surely make it unmistakeably a star in Laselle's 48-inch telescope. Thus, I now feel N6199 is more likely to be the fainter (m = 14.8 in GSC), though the position is further off (about 30 arcsec, compared to about 15 arcsec) from Marth's (corrected) position.

Where did the IC objects come from? During his survey of the NGC nebulae, Bigourdan of course could not locate either N6196 or N6197 at their catalogued positions -- his estimated positions given under these numbers refer to stars. However, he did find five other nebulae in the area (B209, B324, B325, B425 and B426), and made micrometric observations of the three brightest of these.

It is clear, even in Bigourdan's own notes, that B209 (the brightest) is NGC 6194, though he somehow got the position (from Schultz) incorrect (his position and Schultz's original position agree to within 10 arcsec).

The other two measured nebulae have, as mentioned above, identical offsets from Marth's positions, so it is also clear that B325 = IC 4615 = NGC 6196, and B426 = IC 4616 = NGC 6197. Bigourdan searched in vain, however, for NGC 6199 at Marth's position. It's a bit surprising that he did not make the connection between the two brighter galaxies and his own, and thus search near the offset for N6199.

Two other "nebulae" in Bigourdan's group had only estimated positions by him: B324 = IC 4614, and B425 = IC 4613. IC 4614 is a galaxy, but there is nothing near his position for IC 4613. See that number for further discussion of this group.

Published comments

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a galaxy. Their coded description reads R,DIF,STELNUC,RGSUSP.

Modern observations

Brian Skiff

UGC: pa140.

POSS: pa135.

25cm - vis @ 95x. quite sm, 0'.5 diam, circ. vmuch brtr sub*ar center. BS,

23May1982, Anderson Mesa.

30cm - sm & f. halo unconcen, 30" diam, elong SE-NW. consp *ar nuc. m14.5 * 1'

SE. CBL, 11Sep1983, USNO.

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