Basic object information
Name: NGC 5557
Type of object: Galaxy
Magnitude: 11.0
Surface brightness: 12.5 mag/sq arcmin
Size: 2.4'x1.9'
Position angle: 105
Object classification: E1
Description: cB,S,R,vsbM*
Notes: H I 99;BN;no struct

Catalog position for epoch J2000.0
Right ascension: 14h 18m 26.2s
Declination: +36 29' 37"

Constellation: Bootes

Observer: Iiro Sairanen
Obs. place: Lakasenpelto, Imatra, Finland
Date/Time: 11/12.4.2002 21:40 UT

Telescope: 16" Dobson f 4.5

Magn: 244x

Filter:

Field: 12'

NE Lim.mag: 5,5

Background sky: 4-5

Seeing: 3

Transparency: 4
Weather: foggy, -1C

Ellipsin muotoinen sumu, jossa melko kirkas ydin. Ei yksityiskohtia.

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