Sh 2-20

Sh 2-20 is an emission nebula in the constellation Sagittarius. It is part of the Sharpless Catalog assembled by Stewart Sharpless. It lies next to the Sharpless objects Sh 2-15, Sh 2-16, Sh 2-17, Sh 2-18, and Sh 2-19. It contains the two infrared clusters, [DB2000] 5 and [DB2000] 6. It contains the radio source Seiradakis 36, of unknown origin.^[4]

Right ascension17^h 47^m 08^s

Declination−28° 46′ 30″

Distance4890 ly   (1500 pc)

Apparent magnitude (V)15.74

Quick facts Emission nebula, Observation data: J2000 epoch ...

Sharpless 2-20

Emission nebula
H II region
As seen by the legacy survey
Observation data: J2000 epoch
Right ascension	17h 47m 08s
Declination	−28° 46′ 30″
Distance	4890 ly   (1500 pc)
Apparent magnitude (V)	15.74
Apparent dimensions (V)	10'[1]
Constellation	Sagittarius
Physical characteristics
Radius	14[2] ly
Designations	RCW 141, LBN 3, ESO 455-39, Minkowski 3-58, WSTB 19W96[3]
See also: Lists of nebulae

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