Sh 2-40

Sharpless 2-40

Nebula
Seen near the top
Observation data: J2000 epoch
Right ascension	18^h 12^m 10^s
Declination	−17° 42′ 48″[1]
Apparent dimensions (V)	15' x 15'[2]
Constellation	Sagittarius
Physical characteristics
Radius	2400 pc
Designations	RCW 155, LBN 49
See also: Lists of nebulae

Sh 2-40 is a large nebula in Sagittarius. It is just north of Sh 2-41. Sh 2-40 is in the same direction as powerful radio source W 33. W 33 is, however, about 4600 parsecs more distant than Sh 2-40.^[3]

References

1. "SIMBAD query result".
2. "Sharpless (Sh2) - Astrobasics". 13 September 2022.
3. "Sh 2-40".