Iota1 Fornacis is a single[3] sixth-magnitude star in the constellation Fornax. It has a spectrum of G8/K0III,[2] 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.[1]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Fornax |
| Right ascension | 02h 36m 09.26479s[1] |
| Declination | −30° 02′ 41.9220″[1] |
| Apparent magnitude (V) | 5.729[2] |
| Characteristics | |
| Evolutionary stage | giant |
| Spectral type | G8/K0III[2][3] |
| Variable type | microvariable[4] |
| Astrometry | |
| Radial velocity (Rv) | 3.44±0.12[1] km/s |
| Proper motion (μ) | RA: −17.457 mas/yr[1] Dec.: −6.236 mas/yr[1] |
| Parallax (π) | 5.0717 ± 0.0459 mas[1] |
| Distance | 643 ± 6 ly (197 ± 2 pc)[1] |
| Details[5] | |
| Mass | 3.73±0.14 M☉ |
| Radius | 18.95±0.48 R☉ |
| Luminosity | 193±6 L☉ |
| Surface gravity (log g) | 2.46±0.11 cgs |
| Temperature | 4,942±50 K |
| Metallicity [Fe/H] | 0.096±0.043 dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
This star is microvariable, varying by 0.0006 magnitudes at Hipparcos wavelengths.[4]
References
edit- ^ a b c d e f g 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.
- ^ a b c "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 (2): 869–879. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. 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. Bibcode:2001A&A...367..297A. doi:10.1051/0004-6361:20000567. ISSN 0004-6361. Iota1 Fornacis' database entry at VizieR.
- ^ Ottoni, G.; Udry, S.; Ségransan, D.; Buldgen, G.; Lovis, C.; Eggenberger, P.; Pezzotti, C.; Adibekyan, V.; Marmier, M.; Mayor, M.; Santos, N. C.; Sousa, S. G.; Lagarde, N.; Charbonnel, C. (2022-01-01). "CORALIE radial-velocity search for companions around evolved stars (CASCADES). I. Sample definition and first results: Three new planets orbiting giant stars". Astronomy and Astrophysics. 657: A87. arXiv:2201.01528. Bibcode:2022A&A...657A..87O. doi:10.1051/0004-6361/202040078. ISSN 0004-6361. Iota1 Fornacis' database entry at VizieR.
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