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RA: 20h 13m 12.4s
Dec: −46° 09′ 38″
Ch: MSA:1472, U2:411, SA:23
Type: galaxy, S0
Mag: B=12.77, V=11.78
Size: 2.238′ x 1.318′
Discovered by Sir John Herschel at the Cape of Good Hope with an 18-inch f/13 speculum telescope. He recorded it as "F, vS, R, vgmbM, 10 arcseconds, a star 7m S.f. distant 5'."
Table IV: 7 mag * sp 3', not n.f. as in NGC.
De Vaucouleurs (1956) "Survey of bright galaxies south of -35° declination", Mem. Mount Stromlo, No. 13. (photographic study, plates taken with the 30-inch Reynolds reflector, 20-inch diaphragm). In the Notes to the catalogue: "* 7 mag sf 3'. not nf as in NGC, nor sp as in errata (IC II, p 195, after D.S.). Herschel's original notation sf in Cape Obs was correct.
Sandage (1975(Astrophysical Journal, 202, 563-582) notes that this galaxy is a member of the Telescopium Group. Members include NGC 6851, NGC 6861, NGC 6861D, NGC 6868, NGC 6870, NGC 6875, NGC 6878, NGC 6890, NGC 6893, NGC 6902, NGC 6909 & ESO 285- G 7.
The RNGC (Sulentic and Tifft 1973) notes that this is a 13.0 mag galaxy.
Shobbrook (1966, Mon. Not. R. astr. Soc., Vol 131, p351-363) notes that this member of the Telescopium Cluster has V = 12.32, B-V = 0.99 and U-B = 0.46. It measures 0.9 by 0.4.
15cm - mod f @ 80x in triangle of m9 *s. 140x: 30" diam, circ w/mod even
concen to sub*ar nuc. two m15 *s N, NE. BS, 12Nov1993, LCO.
The Messier objects
The Bennett objects
The Caldwell list
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