NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-08-24 T14:14:14 PDT
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Notes for object NGC 6721

3 note(s) found in NED.


1. 1994CAG1..B...0000S
Re:NGC 6721
Pair?
E1
CD-1026-Br
July 21/22, 1979
103aO + GG385
45 min
NGC 6721 is a normal E1 of medium compactness. It may form a
binary pair with IC 4806 (Sb) which is 14.4' distant. The redshifts
are v_o(6721) = 4316 km/s, from the RSA2, and v_o(4806) = 4249 km/s,
from Huchtmeier and Richter (1989). The mean redshift distance is 86
Mpc (H = 50), giving a projected linear separation of 360 kpc for the
pair.

2. 1985SGC...C...0000C
Re:NGC 6721
Plate 1576
Suspected tail extends 1' to north. Optical pair with IC 4806 at 15'
north-north-following.
Plate 1580
Overexposed center. Knots in lens. Extremely faint plume (?) to north.
Plate 2362
Overexposed center, several stars superposed. Faint companion 5.5 north-
north-following.

3. 1964RC1...C...0000d
Re:NGC 6721
Small, bright nucleus.
There is a very small star attached 0.2 arcmin south-following.


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