NGC 5084

50%  resolution (1.0MB)

Identification of satellite galaxies (1.0MB)

Object data of NGC5084

Object type: galaxy (S0)
Size: 11'x2'
Magnitude: 10.5 mag
Constellation: Vir (near border to Hya)
Distance: 80 Mio Ly
Notes: NGC 5084 is a lenticular galaxy in the constellation Virgo, located near the border to constellation Hydra. It is a member of the Virgo II groups of galaxies, which are the long southern extension to the Virgo cluster.

Carignan et al determined the mass of NGC 5084 in 1997 by analyzing the spectra of the satellite galaxies. They confirmed 9 satellite galaxies, from which 8 are visible in the above image and indicated in the object identification image with designation G2 ... G9.

Galaxy G8 appears to be satellite of galaxy G7 (ESO 576-40). So, this galaxy is a satellite of a satellite!

The estimated mass of NGC 5084 is 1e13 solar masses, what makes this galaxy to one of the most massive disk galaxy known.

Exposure data

Date: 2014-03-05 + 2014-03-06
Location: Hacienda Los Andes / Chile (1100m)
Telescope: TEC RC 20" f/9 with corrector (f=4492mm)
Camera: FLI PL16803 with Astrodon filters
Binning: L 1x1 / RGB 1x1
Mount: Astro-Physics AP1600GTO
Exposure time: L 25x6m / R 6x6m / G 6x6m / B 6x6m
Exposure time total: 4h18m
Notes: Image acquisition by CEDIC team (Bernhard Hubl, Christoph Kaltseis, Wolfgang Leitner and Herbert Walter)

Image processing by Bernhard Hubl

Problems with stray light