Basic object information
Name: NGC 4494
Type of object: Galaxy
Magnitude: 9.8
Surface brightness: 12.4 mag/sq arcmin
Size: 4.5'x4.3'
Object classification: Elliptical
Description: vB,pL,R,vsmbMN
Notes: H I 83

Catalog position for epoch J2000.0
Right ascension: 12h 31m 24.3s
Declination: +25 46' 24"

Constellation: Coma Berenices

Observer: Iiro Sairanen
Obs. place: Ahola, Joutseno, Finland
Date/Time: 5/6.3.2002 20:45 UT

Telescope: 16" Dobson f 4.5

Magn: 146x

Filter: Lumicon deepsky

Field: 21'

NE Lim.mag: 6,2

Background sky: 2-3

Seeing: 3-4

Transparency: 3
Weather: windy, -1C

Lähes pyoreä galaksi, jonka pintakirkkaus on yllättävän suuri.

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