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.
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