HR 9038
| Observation data J2000
| ||
|---|---|---|
| Constellation | Cepheus | |
| Right ascension | 23h 52m 25.31799s[1] | |
| Declination | +75° 32′ 40.5141″[1] | |
| Apparent magnitude (V) | 6.40[2] (6.93 / 7.33)[3] / 11.4[4] | |
| Characteristics | ||
| Spectral type | K3 V[5] + K3 V[5] + M2[6] | |
| U−B color index | 0.70[2] | |
| B−V color index | 0.98[2] | |
| R−I color index | 0.5 | |
| Absolute magnitude (MV) | 6.77 / 7.16 / ?[3] | |
| Absolute bolometric magnitude (Mbol) | 6.34 / 6.62 / ?[3] | |
Argument of periastron (ω)(secondary) | 134.14° | |
Semi-amplitude (K1)(primary) | 39.9 km/s | |
| Semi-amplitude (K2) (secondary) | 49.7 km/s | |
| Details dex | ||
| 10879 | ||
| Database references | ||
| SIMBAD | A | |
| B | ||
HR 9038 is a
spectroscopic binary system with an orbital period of 7.753 days and a combined stellar classification of K3 V.[9] Component B is a red dwarf star that orbits the primary pair every 290 years.[4]
References
- ^ S2CID 18759600.
- ^ Bibcode:1986EgUBV........0M.
- ^ .
- ^ , A69.
- ^ S2CID 119387088.
- ^ "GJ 909 B". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 7 May 2017.
- S2CID 119231169.
- ^ "Sixth Catalog of Orbits of Visual Binary Stars". United States Naval Observatory. Archived from the original on 2017-08-01. Retrieved 2017-05-07.
- S2CID 51051184, 62.
External links
- "ARICNS: 01943 (A)". ARICNS. Centre of Astronomy, Heidelberg University.
- "ARICNS: 01944 (B)". ARICNS. Centre of Astronomy, Heidelberg University.
- NStars: 2352+7532[permanent dead link]
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