NGC 2175

open cluster in the constellation Orion

Key facts

Right ascension: 06 09 39. 0
Declination: +20 ° 29 ′ 1 2 ″
Distance: 5,290 ly (1,621 pc )
Apparent dimensions v: 18 ′
Estimated age: 9.06 ± 0.05 Myr
Other designations: NGC 2175, Cr 84, OCL 476
Constellation: Orion

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Wikidata facts

Instance of: H II region
Constellation: Orion
Distance from Earth: 2.23
Image: NGC 2175 DSS.jpg

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catalog code: [KPS2012] MWSC 0764
spectral class: Oe...
discoverer or inventor: Karl Christian Bruhns
time of discovery or invention: 1857-00-00
apparent magnitude: 6.8
right ascension: 92.4125
declination: 20.4867
epoch: J2000.0
radial velocity: 23.2
right ascension component of proper motion: -0.21
declination component of proper motion: -4.95
Commons category: NGC 2175

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Encyclopedic overview

NGC 2175 is a very young open cluster of stars in the equatorial constellation of Orion. It was discovered by Italian astronomer Giovanni Batista Hodierna before 1654 and independently discovered by German astronomer Karl Christian Bruhns on February 6, 1877. NGC 2175 is at a distance of about 5,290 light years away from Earth, and it is embedded in a diffuse nebula, NGC 2174.

The estimated age of this cluster is nine million years. The nebula surrounding it is Sharpless catalog Sh 2-252, and it is sometimes called the Monkey Head Nebula due to its appearance. In 1970, a smaller star cluster designated NGC 2175s was discovered in the vicinity.

Excerpted from Wikipedia’s “NGC 2175” article, available under the CC BY-SA 4.0 licence.

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