Deep Sky Object in Winter
NGC2418 (Galaxy in Gemini)


Date & Time: Dec 26 2025, from 24:22 to 25:17 JST(+0900)
Composed 10 shots with 6 minutes exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1600mm, F6.3)
with IDAS LPS-P1 Light-pollution suppression filter
Auto-guided with Meade LX200 Equatorial & Lacerta M-GEN
Digital Camera: Nikon D810A
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(2040×2040)
Device Size...10×10mm
Sensitivity...ISO4000, White Balance...Daylight


NGC24118 / Galaxy, type SAB(rs)c
R.A.07h 36m 37.5s (2000.0)
Dec.+17°53' 04" (2000.0)
Apparent Size1.8×1.4'
Radial Velocity+5057km/s
Magnitude13.2
Distance242 million light yrs.
Group of Galaxies -
Other IDsUGC 3931, CGCG 87-17
Arp 165, MCG +3-20-8
PGC 21382
This is a small elliptical galaxy located in the southeastern part of Gemini, about 4.6° ENE of λ Gem. Its apparent diameter is just under 2 arcminutes and it is very faint, but a subtle, tongue-like structure extends toward the northwest. Because of this unusual shape, it is listed as No. 165 in the Arp Atlas of Peculiar Galaxies. The distance to NGC 2418 is estimated to be about 240 million light-years.



NGC2292, NGC2293
IC356

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