Deep Sky Object in Spring
NGC4178 (Galaxy in Virgo)



Date & Time: Apr 26 2025, from 22:32 to 23:27 JST(+0900)
Composed 10 shots with 6 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



NGC4178 / Galaxy, type SB(rs)dm II
R.A.12h 12m 46.4s (2000.0)
Dec.+10°51' 53" (2000.0)
Apparent Size5.1×1.8'
Radial Velocity+240km/s
Magnitude11.9
Distance43.8 million light yrs.
Group of GalaxiesVirgo Cluster
Other IDsIC 3042, UGC 7215
CGCG 69-88, MCG +2-31-50
PGC 38943
NGC 4178 is a faint barred spiral galaxy located in the southwestern part of the Virgo Cluster. It can be found 2.8 degrees northeast of ο Virginis, with a major axis of about 5 arcminutes and a brightness of approximately 12th magnitude.
One of the distinguishing features of NGC 4178 is its central bulge, which is dim and underdeveloped compared to typical galaxies. Recent studies have revealed that the mass of the black hole at its center is between 104 and 105 times the mass of the Sun, making it one of the lightest known black holes in center of galaxies.




NGC4123, NGC4116

NGC4216


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