HD 143346 (HR 5595) is a single[14] star in the southern circumpolar constellation of Apus. It is 28.5 minutes west and about 5° north of the yellow giant star Gamma Apodis, which is the second brightest star in the constellation of Apus.
Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
---|---|
Constellation | Apus |
Right ascension | 16h 05m 55.8193s[1] |
Declination | −72° 24′ 03.2428″[1] |
Apparent magnitude (V) | 5.68±0.01[2] |
Characteristics | |
Evolutionary stage | horizontal branch[3] |
Spectral type | K1.5 III CN1[4] |
U−B color index | +1.26[5] |
B−V color index | +1.17[5] |
Astrometry | |
Radial velocity (Rv) | 49±0.9[6] km/s |
Proper motion (μ) | RA: −32.468 mas/yr Dec.: +70.299 mas/yr |
Parallax (π) | 11.3858 ± 0.0386 mas[1] |
Distance | 286.5 ± 1.0 ly (87.8 ± 0.3 pc) |
Absolute magnitude (MV) | +0.95[7] |
Details | |
Mass | 1.18[8] M☉ |
Radius | 10.6[9] R☉ |
Luminosity | 52.6±0.4[1] L☉ |
Surface gravity (log g) | 2.43[8] cgs |
Temperature | 4,520±90[10] K |
Metallicity [Fe/H] | +0.30±0.16[3] dex |
Rotational velocity (v sin i) | <1[11] km/s |
Other designations | |
Database references | |
SIMBAD | data |
This object has an orange hue and is visible to the naked eye as a dim point of light with an apparent visual magnitude of 5.68[2] It is located at a distance of approximately 286 light years from the Sun based on parallax,[1] and is drifting further away with a radial velocity of 49 km/s. At that distance, the visual brightness of this star is diminished by an extinction of 0.174 due to interstellar dust.[3] The star has an absolute magnitude of 0.95.[7]
HD 1433456 has a stellar classification of K1.5III CN1,[4] indicating a red giant that has an anomalous overabundance of cyanogen in the spectrum. It is currently on the horizontal branch, generating fusion via a helium core. At present it has 118% the mass of the Sun but has expanded to 10.6 times the radius of the Sun.[9] The star is radiating 53 times the luminosity of the Sun[1] from its photosphere at an effective temperature of 4,520 K.[10] HD 1433456 is a member of the Milky Way's thick disk,[15] but is metal enriched.[3] It spins with a projected rotational velocity lower than 1 km/s.[11]
References
edit- ^ a b c d e f 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 Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H. ISSN 0004-6361.
- ^ a b c d Jones, M. I.; Jenkins, J. S.; Rojo, P.; Melo, C. H. F. (December 2011). "Study of the impact of the post-MS evolution of the host star on the orbits of close-in planets: I. Sample definition and physical properties⋆⋆⋆". Astronomy & Astrophysics. 536: A71. arXiv:1110.6459. Bibcode:2011A&A...536A..71J. doi:10.1051/0004-6361/201117887. ISSN 0004-6361.
- ^ a b Keenan, Philip C.; McNeil, Raymond C. (October 1989). "The Perkins catalog of revised MK types for the cooler stars". The Astrophysical Journal Supplement Series. 71: 245. Bibcode:1989ApJS...71..245K. doi:10.1086/191373. eISSN 1538-4365. ISSN 0067-0049.
- ^ a b 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.
- ^ a b Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID 119257644.
- ^ a b Anders, F.; et al. (August 2019). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18". Astronomy & Astrophysics. 628: A94. arXiv:1904.11302. Bibcode:2019A&A...628A..94A. doi:10.1051/0004-6361/201935765. ISSN 0004-6361.
- ^ a b Stassun, Keivan G.; et al. (9 September 2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv:1905.10694. Bibcode:2019AJ....158..138S. doi:10.3847/1538-3881/ab3467. ISSN 0004-6256.
- ^ a b Charbonnel, C.; Lagarde, N.; Jasniewicz, G.; North, P. L.; Shetrone, M.; Krugler Hollek, J.; Smith, V. V.; Smiljanic, R.; Palacios, A.; Ottoni, G. (January 2020). "Lithium in red giant stars: Constraining non-standard mixing with large surveys in the Gaia era". Astronomy & Astrophysics. 633: A34. arXiv:1910.12732. Bibcode:2020A&A...633A..34C. doi:10.1051/0004-6361/201936360. eISSN 1432-0746. ISSN 0004-6361.
- ^ a b 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, B. A., Uranometria Argentina, Reprinted and updated by Pilcher, F, archived from the original on 2012-02-27, retrieved 2012-01-06
- ^ "HD 143346". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-08-04.
- ^ Eggleton, P. P.; Tokovinin, A. A. (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. S2CID 14878976.
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: CS1 maint: unflagged free DOI (link) - ^ Eggen, O. J. (July 1993). "Evolved GK stars near the sun. I - The old disk population". The Astronomical Journal. 106: 80. Bibcode:1993AJ....106...80E. doi:10.1086/116622.