| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Antlia |
| Right ascension | 09 37 09.89308 |
| Declination | −32° 10′ 43.2374″ |
| Apparent magnitude (V) | 5.62 |
| Characteristics | |
| Evolutionary stage | red giant branch |
| Spectral type | K1 III |
| B−V color index | +1.02 |
| Astrometry | |
| Radial velocity (Rv) | −2.6±0.6 km/s |
| Proper motion (μ) | RA: +27.757 mas/yr Dec.: −15.640 mas/yr |
| Parallax (π) | 10.4548 ± 0.0533 mas |
| Distance | 312 ± 2 ly (95.6 ± 0.5 pc) |
| Absolute magnitude (MV) | +0.69 |
| Details | |
| Mass | 2.17±0.11 M☉ |
| Radius | 10.3±0.2 R☉ |
| Luminosity | 55.2±1.6 L☉ |
| Surface gravity (log g) | 2.9±0.1 cgs |
| Temperature | 4,905±42 K |
| Metallicity | +0.10±0.03 dex |
| Rotational velocity (v sin i) | <1.4 km/s |
| Other designations | |
| 17 G. Antliae[9], CD−31°7458, CPD−31°2797, FK5 1248, HD 83380, HIP 47199, HR 3833, SAO 200561 | |
| Database references | |
| SIMBAD | data |
HD 83380 (HR 3833) is an orange-hued star in the southern constellation of Antlia. It shines faintly with a apparent magnitude of 5.62 when viewed in ideal conditions. Parallax measurements place the object at distance of 312 light-years. It has a heliocentric radial velocity of −2.6 km/s, indicating that it is drifting towards the Solar System.
HD 83380 has a stellar classification of K1 III, indicating that it is an evolved red giant. Gaia DR3 stellar evolution models place the object on the red giant branch. At present it has 2.17 times the mass of the Sun and an enlarged radius of 10.3 R☉. It shines with a luminosity 55 times greater than the Sun from its photosphere at an effective temperature of 4,905 K. HD 83380 is slightly metal enriched with a metallicity 126% that of the Sun. It spins with a projected rotational velocity too low to be measured accurately, and is believed to be a member of the thin disk population.
The multiplicity status of HD 83380 isn't generally agreed on. De Mederios et al. (2014) found it to be a probable spectroscopic binary while Eggleton and Tokovinin (2008) list it as a solitary star.
References
- ^ Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
- ^ Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. eISSN 1562-6873. ISSN 1063-7737. S2CID 255204555.
- ^ 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.
- ^ Houk, N. (1982). Michigan Catalogue of Two-dimensional Spectral Types for the HD stars. Volume_3. Declinations −40° to −26°. Bibcode:1982mcts.book.....H.
- Johnson, H. L.; Mitchell, R. I.; Iriarte, B.; Wisniewski, W. Z. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99–110. Bibcode:1966CoLPL...4...99J.
- ^ Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. eISSN 1562-6873. ISSN 1063-7737. S2CID 119231169.
- ^ 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. (January 2022). "CORALIE radial-velocity search for companions around evolved stars (CASCADES): I. Sample definition and first results: Three new planets orbiting giant stars". Astronomy & Astrophysics. 657: A87. arXiv:2201.01528. Bibcode:2022A&A...657A..87O. doi:10.1051/0004-6361/202040078. ISSN 0004-6361.
- ^ De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (January 2014). "A catalog of rotational and radial velocities for evolved stars: V. Southern stars⋆⋆⋆". Astronomy & Astrophysics. 561: A126. arXiv:1312.3474. Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762. ISSN 0004-6361.
- Gould, Benjamin Apthorp (1878). "Uranometria Argentina : brillantez y posicion de las estrellas fijas, hasta la septima magnitud, comprendidas dentro de cien grados del polo austral : con atlas". Resultados del Observatorio Nacional Argentino. 1. Bibcode:1879RNAO....1.....G.
- "HD 83380". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-05-09.
- Eggen, Olin J. (January 1989). "Large and Kinematically Unbiased Samples of G- and K-Type Stars. III. Evolved Young Disk Stars in the Bright Star Sample". Publications of the Astronomical Society of the Pacific. 101: 54. Bibcode:1989PASP..101...54E. doi:10.1086/132404. eISSN 1538-3873. ISSN 0004-6280.
- Eggleton, P. P.; Tokovinin, A. A. (11 September 2008). "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. eISSN 1365-2966. ISSN 0035-8711.
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