NGC/IC Project Restoration Effort
(This is a very very beta version)
NGC1690
Basic Information
Location and Magnitude
Right Ascension: 4:54:19.3
Declination: +1:38:26
Constellation: ORI
Visual Magnitude: 14.3
Historic Information
Discoverer: Herschel J.
Year of discovery: 1831
Discovery aperture: 18.3
Observational
Summary description: vF, vS, am vS st, L * sp
Sub-type: E?
Corwin's Notes
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NGC 1690. Steve Gottlieb has pointed out that this is misidentified in MCG,
PGC, and RC3. In those, the number has mistakenly been put on UGC 3199 rather
than the correct UGC 3198. UGC, RNGC, and CGCG are correct. Note, too, that
the outer diameter listed in MCG is actually the inner diameter; VV rarely
assigned outer diameters to early-type galaxies, which this is.
Steve's Notes
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NGC 1690
24" (12/22/14): at 375x; fairly faint, fairly small, round, 25" diameter, weak concentration. Brightest in a trio (WBL 109) with UGC 3199 1.7' NNW and CGCG 394-028 6.8' WNW. Several stars are nearby including a mag 13.8 star 0.6' NW. Located 7' NE of mag 6.6 HD 31209. The observation was made with the bright star outside the field.
UGC 3199 appeared faint, small, round, 20" diameter, low even surface brightness and CGCG 394-028 is very faint, very small, round, 15" diameter. A mag 10 star lies 3.2' SSW.
13.1" (11/29/86): very faint, very small, round. Several faint stars are nearby including a two mag 13.5 star at the west edge 0.6' from center and 1.2' NNE. Located 7.2' NE of mag 6.6 SAO 112191.