Chi Persei

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Angular expansion, B-band
Open star cluster
χ Persei
χ Persei left and h Persei right in the picture
χ Persei left and h Persei right in the picture
AladinLite
Constellation Perseus
Position
equinox : J2000.0
Right ascension 02 h 22 m
declination + 57 ° 08 ′
Appearance

classification I3r
Brightness  (visual) 6.1 mag
Brightness  (B-band) 6.58 mag
Angular expansion 30 ′
Redness ( excess color  E (BV)) 0.595
Physical data

Affiliation Perseus OB1, Milky Way
Redshift −0.000149 ± 0.000002
Radial velocity (−44.69 ± 0.73) km / s
distance  approx. 8200 ly
(approx. 2500 pc )
history
Discovered by Hipparchus
Discovery time ‍130 BC Chr.
Catalog names
 NGC  884 • C 0218 + 568 • OCl 353 •  Mel  14 •  Cr  25 • Lund 76 •  GC  521 • Raab 10 • h 212 • H VI 34

χ Persei ( Chi Persei , also known as NGC 884 ) is a 6.1  mag bright open star cluster with an angular extent of 30 ′ in the constellation Perseus . Chi Persei is right next to h Persei and can be seen with the naked eye as a faint nebula.

Chi Persei was founded in 130 BC. Discovered by the Greek astronomer Hipparchus .

Stars (selection)

Surname apparent
brightness 		Spectral
class 		Proper movement ( mas / a )
right ascension 		Proper movement ( mas / a )
declination 		Distance
(Lj)
HD 14433 6.48 A1 Ia −0.46 −0.91 9300
HD 14542 6.98 B8.0 I. −0.77 −0.94 9600
HD 14443 7.69 BC2 Ib −0.59 −0.95 9300
AD Persei 7.85 M3 Iab −0.07 −1.42 7100
FZ Persei 7.96 M1 Iab −0.70 −1.22 7400
V439 Persei 8.17 M0.5 Iab −0.31 −0.92 7200

Web links

Commons : NGC 884  - collection of images, videos, and audio files

Individual evidence

  1. ↑ a b c SIMBAD database, operated at CDS, Strasbourg, France
  2. ↑ a b SEDS: NGC 884
  3. ↑ NASA / IPAC EXTRAGALACTIC DATABASE
  4. ↑ cseligman.com: NGC Objects: NGC 850-899