Iota1 Fornacis is a single[2] sixth-magnitude star in the constellation Fornax. It has a spectrum of G8/K0III,[1] matching a G/K-type giant. Parallax measurements imply a distance of 197 parsecs (640 ly), and it is drifting further away at a speed of 3.44 km/s.[4]
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Fornax |
Right ascension | 02h 36m 09.3s[1] |
Declination | −30° 02′ 41.9″[1] |
Apparent magnitude (V) | 5.729[1] |
Characteristics | |
Evolutionary stage | giant |
Spectral type | G8/K0III[1][2] |
Variable type | microvariable[3] |
Astrometry | |
Radial velocity (Rv) | 3.44±0.12[4] km/s |
Proper motion (μ) | RA: −17.457 mas/yr[4] Dec.: −6.236 mas/yr[4] |
Parallax (π) | 5.0717 ± 0.0459 mas[4] |
Distance | 643 ± 6 ly (197 ± 2 pc)[4] |
Details[5] | |
Radius | 20.712 R☉ |
Luminosity | 207 L☉ |
Temperature | 4,816 K |
Other designations | |
Database references | |
SIMBAD | data |
This star is microvariable, varying by 0.0006 magnitudes at Hipparcos wavelengths.[3]
References
edit- ^ a b c d e "Iota1 Fornacis". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2024-06-15.
- ^ a b Eggleton, P. P.; Tokovinin, A. A. (2008-09-01). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389: 869–879. arXiv:0806.2878. doi:10.1111/j.1365-2966.2008.13596.x. ISSN 0035-8711. Iota1 Fornacis' database entry at VizieR.
- ^ a b Adelman, S. J. (2001-02-01). "Research Note Hipparcos photometry: The least variable stars". Astronomy and Astrophysics. 367: 297–298. doi:10.1051/0004-6361:20000567. ISSN 0004-6361. Iota1 Fornacis' database entry at VizieR.
- ^ a b c d e Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ McDonald, I.; Zijlstra, A. A.; Watson, R. A. (2017-10-01), "Fundamental parameters and infrared excesses of Tycho-Gaia stars", Monthly Notices of the Royal Astronomical Society, 471: 770–791, arXiv:1706.02208, doi:10.1093/mnras/stx1433, ISSN 0035-8711 Iota1 Fornacis' database entry at VizieR.