Astronomy:HD 34880
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Orion[1] |
| Right ascension | 05h 20m 26.4074s[2] |
| Declination | −05° 22′ 03.093″[2] |
| Apparent magnitude (V) | +6.42[3] |
| Characteristics | |
| Evolutionary stage | Blue giant |
| Spectral type | B8II[4] |
| Astrometry | |
| Radial velocity (Rv) | +27.9±1.5[2] km/s |
| Proper motion (μ) | RA: −3.539±0.103[2] mas/yr Dec.: −3.050±0.069[2] mas/yr |
| Parallax (π) | 3.3183 ± 0.0914[2] mas |
| Distance | 980 ± 30 ly (301 ± 8 pc) |
| Absolute magnitude (MV) | −1.26[1] |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 34880 is a blue giant star of magnitude 6.41 in the constellation of Orion. It is about 980 light years from the Solar System.
Observation
This star is very narrowly in the southern celestial hemisphere; this means that it can be observed from all the inhabited regions of the Earth without any difficulty and that it is invisible only far beyond the Arctic polar circle. It appears near or below the horizon, depending on season as circumpolar in innermost areas of the Antarctic continent. Being of magnitude 6.4, it is observable with the naked eye only in ideal conditions; it is easy to observe with a small pair of binoculars.
The best period for the night-time observation of Orion in either hemisphere is between late October and April. Owing to the position of the star close to the celestial equator (zodiac), it is obscured by the sun or its glare at other times of the year.
Physical traits
The star is a blue giant with an absolute magnitude of −0.18 and it has a positive radial velocity indicating that the star is moving away from the Solar System.
Multiple star
HD 34880 is a multiple system: made up of 3 components. The main component A is a star appearing with magnitude 6.41. The B component has magnitude 11.0, separated by 4.4 arc seconds from A at position angle 285 degrees (from north). Component C is of magnitude 9.1, separated by 0.5 arc seconds from A; its position angle is about 196 degrees.[6]
References
- ↑ 1.0 1.1 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A XHIP record for this object at VizieR.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ Fabricius, C.; Høg, E.; Makarov, V. V.; Mason, B. D.; Wycoff, G. L.; Urban, S. E. (2002). "The Tycho double star catalogue". Astronomy and Astrophysics 384: 180. doi:10.1051/0004-6361:20011822. Bibcode: 2002A&A...384..180F.
- ↑ Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5". Michigan Spectral Survey 5. Bibcode: 1999MSS...C05....0H.
- ↑ "HD 34880". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+34880.
- ↑ Schöller, M.; Correia, S.; Hubrig, S.; Ageorges, N. (2010). "Multiplicity of late-type B stars with HGMN peculiarity". Astronomy and Astrophysics 522: A85. doi:10.1051/0004-6361/201014246. Bibcode: 2010A&A...522A..85S.
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