HD 99922

Last updated
HD 99922
Observation data
Epoch J2000        Equinox J2000
Constellation Crater [1]
HD 99922 A
Right ascension 11h 29m 38.612s [2]
Declination −24° 27′ 50.52″ [2]
Apparent magnitude  (V)5.813 [2]
HD 99922 B
Right ascension 11h 29m 39.209s [2]
Declination −24° 27′ 49.24″ [2]
Apparent magnitude  (V)8.543 [2]
Characteristics
HD 99922 A
Spectral type A0V [3]
B−V color index +0.07 [4]
Astrometry
HD 99922 A
Radial velocity (Rv)−2.50 [5] km/s
Proper motion (μ)RA: −56.4 [2] mas/yr
Dec.: +9.7 [2] mas/yr
Parallax (π)7.32±0.61  mas [6]
Distance 450 ± 40  ly
(140 ± 10  pc)
HD 99922 B
Proper motion (μ)RA: -49.7 [2] mas/yr
Dec.: 19.4 [2] mas/yr
Other designations
ADS 8183 AB, CD−23°10009, HD 99922, HIP  56078, HR 4428 [3]
HD 99922 A: SAO 179935 [7]
HD 99922 B: SAO 179936 [8]
Database references
SIMBAD AB
A
B

HD 99922 is a double star system in the constellation of Crater. It shines with an apparent visual magnitude of 5.77 from a distance of about 450 light years (140 parsecs) away from the Earth. The primary star is an A-type main sequence star; the secondary star is located about 8 arcseconds away. [8]

Other designations include HR 4428 and HIP 56078. [3]

References

  1. ↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific . 99 (617): 695. Bibcode:1987PASP...99..695R. doi: 10.1086/132034 . Constellation record for this object at VizieR.
  2. 1 2 3 4 5 6 7 8 9 10 Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27 –L30. Bibcode:2000A&A...355L..27H.
  3. 1 2 3 "HD 99922". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 20 February 2017.
  4. ↑ Nicolet, B. (1964). "Catalogue of homogeneous data in the UBV photoelectric photometric system". Astronomy and Astrophysics Supplement Series. 34: 1–49. Bibcode:1978A&AS...34....1N.
  5. ↑ Kharchenko, N. V.; et al. (2007). "Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ~55000 stars and mean radial velocities of 516 Galactic open clusters and associations". Astronomische Nachrichten. 328 (9): 889. arXiv: 0705.0878 . Bibcode:2007AN....328..889K. doi:10.1002/asna.200710776. S2CID   119323941.
  6. ↑ van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv: 0708.1752 . Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID   18759600.
  7. ↑ "HD 99922A". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 20 February 2017.
  8. 1 2 "HD 99922B". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 20 February 2017.
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