NGC/IC Project Restoration Effort

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NGC3140

 

Basic Information


Location and Magnitude


Right Ascension: 10:9:27.8
Declination: -16:37:40
Constellation: HYA
Visual Magnitude: 14.0

Historic Information


Discoverer: Leavenworth
Year of discovery: 1886
Discovery aperture: 26.3

Observational


Summary description: eF, pS, R, sbMN, 1st of 2
Sub-type: Sc

Corwin's Notes

===== NGC 3140 and NGC 3141. The field exactly matches the sketch that Leavenworth made, and his descriptions also match, down to the bright nucleus in the brighter galaxy. His original descriptions make it clear that the galaxy that got the smaller NGC number is actually the brighter, northeastern member of the pair. Here are his data from AJ 7, 9, 1886: No. RA (1890) Dec Mag Size Form Condensation [NGC] 166 10 04 -16 06 15.5 0.5' R sbMN [3140] 167 10 04 -16 06 16.0 0.3 R --- [3141] Dreyer has added the notes "1st of 2" and "2nd of 2." I suspect that he thought that the larger and brighter galaxy was the preceding since it was listed first in the table. That turns out to be wrong, unfortunately, so the NGC numbers are reversed from the right ascensions.

Steve's Notes

===== NGC 3140 17.5" (2/22/03): slightly brighter and larger of a close pair with NGC 3140 2.4' SW. Faint, small, slightly elongated, 0.5'x0.4', stellar nucleus with direct vision. Although following NGC 3141, Leavenworth listed this object first (identical coordinates) and his description indicates it is the brighter of the pair, so the NGC numbers are reversed in right ascension. Located at the east edge of the rich cluster AGC 940.