Basic object information
Object name: NGC 4689
Object type: Galaxy
Magnitude: 10.7
Size: 4.3'x3.5'
Position angle: 160
Object classification: Sbc
Description: pB,vL,E,vglbM,r
Notes: H II 128

Catalog information
RA (J2000.0): 12h 47m 48.0s
Dec (J2000.0): +13 46' 00"
Constellation: Coma Berenices

Observer: Iiro Sairanen
Obs. place: Ania, Pirkkala, Finland
Date/Time: 18/19.4.2009 2:25

Telescope: Newton 300/1500 mm

Magn: 214x
Field: 23'
Background sky: 2 (21.05)Visuality: III

NE Lim.mag: 6.9
Seeing: 3
Height: 37

Weather: -6C, gusts of wind

Faint knots visible occasionally around the core-area with averted vision.