Iota1 Normae
- For other star systems with this Bayer designation, see ι Normae.
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Norma |
| Right ascension | 16h 03m 32.08942s [1] |
| Declination | −57° 46′ 30.2641″ [1] |
| Apparent magnitude (V) | 4.63[1] |
| Characteristics | |
| Spectral type | A7IV |
| Astrometry | |
| Radial velocity (Rv) | −14.40 ± 3.7[1] km/s |
| Proper motion (μ) | RA: -120.01 ± 1.77[2] mas/yr Dec.: -82.09 ± 1.48[2] mas/yr |
| Parallax (π) | 25.39 ± 1.25[2] mas |
| Distance | 128 ± 6 ly (39 ± 2 pc) |
| Other designations | |
Iota1 Normae (ι1 Nor) is a multiple star system in the constellation Norma. Its combined apparent magnitude is 4.63. The AB (mag 5.2 and 5.76) pair orbit each other with a period of 26.9 years; they are 2.77 and 2.71 times as massive as the Sun respectively. A third component is a yellow main sequence star of spectral type G8V with an apparent magnitude of 8.02.[3]
References
- 1 2 3 4 5 SIMBAD, HR 5961 (accessed 22 December 2012)
- 1 2 3 van Leeuwen, F. (2007). "Validation of the New Hipparcos Reduction". Astronomy and Astrophysics. 474 (2): 653–64. arXiv:0708.1752
. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. - ↑ Malkov, O. Yu.; Tamazian, V.S.; Docobo, J.A.; Chulkov, D.A. (2012). "Dynamical masses of a selected sample of orbital binaries". Astronomy & Astrophysics. 546: 5. Bibcode:2012A&A...546A..69M. doi:10.1051/0004-6361/201219774. A69.
This article is issued from Wikipedia - version of the 9/7/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.