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NGC 5090 (11,355 of 18,816)


oc gc pln bn dn gx gxcl ast aka lost




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NGC 5090

NGC 5090, AM 1318-432, ESO 270-2, LEDA 46618, MCG-07-27-054, SGC 131818-4326.6, h 3487, GC 3496

RA: 13h 21m 12.81s
Dec: −43° 42′ 16.4″

Con: Centaurus
Ch: MSA:933, U2:403, SA:21


(reference key)

Type: galaxies (interacting), E:

Mag: B=12.64, V=11.51

Size: 1.737′ x 1.737′
PA: ?

Historical observations

John Herschel

Discovered by John Herschel at the Cape of Good Hope with an 18-inch f/13 speculum telescope. He recorded it as "bright, pretty large, round; 60 arcseconds." His second observation records it as "pretty faint, round, 30 arcseconds. The third of four." The galaxies in this group are NGC 5082, 5086, 5090 & NGC 5091.

Published comments

Burnham's Celestial Handbook

Burnham calls this a 12.9 mag elliptical galaxy in Centaurus, 1.2' x 1', pretty bright, pretty large and round.

de Vaucouleurs, G. (1956)

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).


A supernova erupted in this galaxy in 1981 (14.5p)

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a 13.0 mag galaxy. Their coded description reads E,R,BM,EONCOM=5091SF.

Bergwall et.al. (1978)

Bergwall et.al. (1978(Astron. Astrophys. Suppl. 33, 243-255) gives this galaxy's B-magnitude in the Johnson system as 13.3. They remark: "Elliptical with large outer envelope. In pair with IG 04 [NGC 5091]."

Photo index

Photo Index by Jim Lucyk: Cat.of South.Peculiar Gal.and Ass. Vol 2 (Arp&Madore, 1987) p2.6.

Modern observations

Brian Skiff

Lick: f * 0'.5 E, br * 5' N. gx N5091 1'.3 E.

POSS: 1'.2 sep.

ESO-LV: B=12.59, 13.94.

15cm - not found in dk sky.

- dbl gx in common envelope. main gx on NW is 1'.75x1' oval w/mod even

concen. comp is sup at SE end (whole mess elong SE-NW), seems circ maybe

15" across and w/o much concen, but grainy. BS, 3Mar1990, LCO.

25cm - found in dk sky @ 180x, but lo altitude.

Contemporary observations

Auke Slotegraaf

2008 April 11

Date: 2008 April 11, 21:15, Friday night

Location: Sutherland (quarry)

Sky conditions: Clear, moonlight.

Telescope: 12-inch f/4.9 Dobsonian

Eyepieces: 25mm Sirius Plossl, 60x, 46' fov & 10mm Sirius Plossl, 150x, 14/17' fov

One of a fascinating group of galaxies, about a degree south-west of Centaurus A. I counted six galaxies in the field of view, which was wonderful. The brightest of the group is NGC 5090.

However, just as I started to sketch the field, dew ended the session. Rats.

2004 March 25

Stellenbosch (Paradyskloof rifle range)

6-inch f/8 Newtonian

Conditions: NELM 5.8 at the pole. Thin cloud in the distance.

MSA chart 933 shows it just southwest of a star. With some attention I could make out the galaxy as an almost stellar, very faint, smudge.

2004 March 24

From "Observing log, 2004 March 24"

Rifle Range, 6-inch f/8

But my target was the Centaurus galaxy cluster, so I hurried on to nearby NGC 5090. MSA chart 933 shows it just southwest of a star. With some attention I could make out the galaxy as an almost stellar, very faint, smudge.

Magda Streicher

(no date)

Alldays (22.50S, 20.12E, 770m).

12-inch f/10 SCT (218x, 346x)

The larger of the two and very hazy and round overall. The round shape is evedent, slowly getting brighter to the middle. Galaxies to the west which need to be observed better.

Richard Ford

2013 March 9th, Saturday



Sky Conditions:The fainter parts of the Milky Way are barely visible.Haziness only visible on the horizon.Atmosphere stable with little interference.

Instrument:12-inch Dobsonian.

This galaxy's oval like shape looks like an out of focus peanut and that this galaxy's tiny minute disk has the resemblance of a faint smudge of light and that the surface brightness of this galaxy is extremely low and very faint.Only the central nucleus of this galacy is just seen at 75x.This galaxy measures 3.1'x 2.5'.

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Lacaille's catalogue

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