Astronomy:HD 28246
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Short description: High proper motion star in the constellation Caelum
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Caelum |
| Right ascension | 04h 25m 19.1197s[1] |
| Declination | −44° 09′ 39.2224″[1] |
| Apparent magnitude (V) | 6.38 ± 0.01[2] |
| Characteristics | |
| Spectral type | F5.5 V[3] |
| B−V color index | +0.44[4] |
| Astrometry | |
| Radial velocity (Rv) | 14.9 ± 0.3[5] km/s |
| Proper motion (μ) | RA: +27.324[1] mas/yr Dec.: +66.539[1] mas/yr |
| Parallax (π) | 26.8312 ± 0.018[1] mas |
| Distance | 121.56 ± 0.08 ly (37.27 ± 0.03 pc) |
| Absolute magnitude (MV) | +3.55[6] |
| Details | |
| Mass | 1.78[7] M☉ |
| Luminosity | 3.07[8] L☉ |
| Surface gravity (log g) | 4.25 ± 0.14[7] cgs |
| Temperature | 6,519 ± 222[7] K |
| Metallicity [Fe/H] | +0.02[9] dex |
| Rotational velocity (v sin i) | 8[9] km/s |
| Age | 1.58[7] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 28246 (HR 1404) is a solitary star located in the southern constellation Caelum. It has an apparent magnitude of 6.38,[2] placing it near the max visibility to the unaided eye. The star is located relatively close at a distance of about 122[1] light years but is recceding with a heliocentric radial velocity of 14.9 km/s.[5]
HD 28246 has a stellar classification of F5.5 V,[3] indicating that it is an ordinary F-type main sequence star. At present it has 1.78[7] times the mass of the Sun and shines at 3.07 solar luminosities[8] from its photosphere at an effective temperature of 6,519 K,[7] giving it a yellow-white glow. HD 28246 has an iron abundance 105%[9] that of the Sun, placing it at solar metallicity. At an age of 1.58 billion years,[7] it spins leisurely with a projected rotational velocity of 8 km/s.[9]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Brown, A. G. A. (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics 649: A1. doi:10.1051/0004-6361/202039657. Bibcode: 2021A&A...649A...1G. Gaia EDR3 record for this source at VizieR.
- ↑ 2.0 2.1 2.2 Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P. et al. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics 355: L27–L30. ISSN 0004-6361. Bibcode: 2000A&A...355L..27H.
- ↑ 3.0 3.1 3.2 Gray, R. O.; Corbally, C. J.; Garrison, R. F.; McFadden, M. T.; Bubar, E. J.; McGahee, C. E.; O'Donoghue, A. A.; Knox, E. R. (July 2006). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 pc--The Southern Sample". The Astronomical Journal 132 (1): 161–170. doi:10.1086/504637. Bibcode: 2006AJ....132..161G.
- ↑ 4.0 4.1 Johnson, H. L.; Mitchell, R. I.; Iriarte, B.; Wisniewski, W. Z. (1 January 1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory 4: 99–110. Bibcode: 1966CoLPL...4...99J.
- ↑ 5.0 5.1 5.2 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. doi:10.1134/S1063773706110065. ISSN 1063-7737. Bibcode: 2006AstL...32..759G.
- ↑ 6.0 6.1 Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331–346. doi:10.1134/S1063773712050015. ISSN 1562-6873. Bibcode: 2012AstL...38..331A.
- ↑ 7.0 7.1 7.2 7.3 7.4 7.5 7.6 7.7 David, Trevor J.; Hillenbrand, Lynne A. (12 May 2015). "The Ages of Early-type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets". The Astrophysical Journal 804 (2): 146. doi:10.1088/0004-637X/804/2/146. ISSN 0004-637X. Bibcode: 2015ApJ...804..146D.
- ↑ 8.0 8.1 8.2 McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (21 November 2012). "Fundamental parameters and infrared excesses of Hipparcos stars: Parameters and IR excesses from Hipparcos". Monthly Notices of the Royal Astronomical Society 427 (1): 343–357. doi:10.1111/j.1365-2966.2012.21873.x. ISSN 0035-8711. Bibcode: 2012MNRAS.427..343M.
- ↑ 9.0 9.1 9.2 9.3 9.4 Nordström, B.; Mayor, M.; Andersen, J.; Holmberg, J.; Pont, F.; Jørgensen, B. R.; Olsen, E. H.; Udry, S. et al. (May 2004). "The Geneva-Copenhagen survey of the Solar neighbourhood: Ages, metallicities, and kinematic properties of ~14 000 F and G dwarfs". Astronomy & Astrophysics 418 (3): 989–1019. doi:10.1051/0004-6361:20035959. ISSN 0004-6361. Bibcode: 2004A&A...418..989N.
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