Barnard's Loop

Barnard's Loop is an emission nebula in the constellation of Orion. It is about 1,600 light-years away from Earth. It is part of the Orion complex. It is a semicircular arc that is about 300 light-years across.^[1] In the center of Bernard's Loop are two nebula. These are the Orion nebula and the Horsehead nebula.^[1] Barnard’s Loop is made up of Plasma. The mainly red color comes from hydrogen gas.^[2]

Barnard's Loop
Observation data
Right ascension	05h 27.5m
Declination	−03° 58′
Distance	1434 ly
Apparent magnitude (V)	5
Constellation	Orion
Physical characteristics
Other designations	Sh2-276
See also: Diffuse nebula, Lists of nebulae
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Related pages

• Orion (constellation)
• Nebulae

References

1. Nigel Henbest; Michael Marten, The Guide to the Galaxy (Cambridge; New York: Press Syndicate of the University of Cambridge, 1994), p. 139
2. Nigel Henbest, The New Astronomy (Cambridge; New York: Press Syndicate of the University of Cambridge, 1996), p. 60

Other websites

• Barnard's Loop (Sh2-276)
• Barnard's Loop and more in Orion-Today's image-EarthSky
• APOD: 2005 April 20 - Barnard's Loop Around Orion