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Entire DOCdb database of 18,816 objects.

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NGC 5820 (12,786 of 18,816)

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NGC 5820

NGC 5820, Arp 136, LEDA 53511, MCG+09-25-001, UGC 9642, II 756, h 1898, GC 4029, GC 4025

RA: 14h 58m 40.05s
Dec: +53° 53′ 9″

Con: Bo÷tes
Ch: MSA:569, U2:50, SA:2

Ref: SIMBAD

(reference key)

Type: galaxies (interacting), E/S0

Mag: B=13, V=?

Size: 1.819′ x 1.445′
PA: 97°

Historical observations

William Herschel

Synonyms:H II-756

Discovered in 1788 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "pB, pL, iF, resolvable."

Webb, T.W. (1893)

In the 5th edition of Webb's Celestial Objects for Common Telescopes it is described as "faint, guide to 7.5 mag pair following, from which a straight line of small stars extends."

Published comments

Arp (1966)

Listed as No. 136 in Arp's "Atlas of Peculiar Galaxies" (Astrophysical Journal Supplement, vol. 14, 1966.) He remarks "faint streamers off one end of eastern galaxy."

Burnham's Celestial Handbook

Burnham calls it a 12.8 mag elliptical galaxy in Bootes, measuring 0.7' x 0.3', which is bright, elongated, suddenly brighter in the middle, with faint extensions on the southeastern side. A bright double star, Sh 191, lies 8' east.

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a 13.0 mag galaxy. Their coded description reads SLEL,BM.

Modern observations

Steve Coe

Steve Coe, using a 13" f/5.6, notes: "Pretty bright, pretty small, elongated 1.5 X 1 in PA 90 and much brighter in the middle at 100X. Raising the power to 220X shows off a stellar nucleus. There are two very faint companions to the east."

Brian Skiff

= Arp 136

RC3: V=12.5/13.0

NGC: pa90.

star cats: 7'.97 WNW of primary of ADS 9474 (V=6.8,7.6; 41"; 343)

15cm - f, W of wide pair.

- mod f & vsm W of wide pair of *s. 35"x25", elong E-W w/mod sharp concen

to consp *ar nuc. BS, 15May1991, Texas Star Party.

25cm - vsm, pa90?, 0'.7x0'.3. sm, sharp, prob *ar nuc. well-def halo.

30cm - found 8' W of nice m6.5 1' dbl. quite sm, sl less than 1' diam w/mottled

halo. 20" core. fair concen.

Favourite lists

Lacaille's catalogue

The Messier objects

Dunlop's catalogue

The Bennett objects

The Caldwell list

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