Deep Sky Object in Autumn
UGCA 444 (WLM, Galaxy in Cetus)



Date & Time: Nov 28 2021, from 19:10 to 20:06 JST(+0900)
Composed 15 shots with 4 minutes exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1600mm, F6.3)
with BaaderPlanetarium Moon&Skyglow 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(4080×4080)
Device Size...20×20mm
Sensitivity...ISO4000, White Balance...Daylight



WLM (UGCA 444) / Galaxy, type IB(s)m V
R.A.00h 01m 56.9s (2000.0)
Dec.-15° 27' 01" (2000.0)
Apparent Size11.5×4.0'
Radial VelocityN/A
Magnitude12.1
Distance3 million light yrs.
Group of GalaxiesLocal Group
Other IDsMCG-3-1-15, DDO221
PGC00143
This is a very dimmed but large sized irregular galaxy lying in western Cetus, about 10 degrees west of beta Ceti. The galaxy was discovered in 1909 by Max Wolf and accredited to Knut Lundmark and Philibert J. Melotte in 1926, now has a nickname of the Wolf-Lundmark-Melotte (WLM) galaxy. The galaxy is about 3 millions light years away, a member of the Local Group (LG). UGCA444 has an elongated shape in north south direction, longer than 10 arc minutes in long axis. But the galaxy has only 12th magnitude in brightness, it's difficult to detect it with our naked eyes even if we can use larger ranges telescopes.




UGCA86

Maffei I & II


Copyright(c) 2021 by Naoyuki Kurita, All rights reserved.
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