HD 28246

Last updated
HD 28246
Observation data
Epoch J2000       Equinox J2000
Constellation Caelum [1]
Right ascension 04h 25m 19.1197s [2]
Declination −44° 09′ 39.222″ [2]
Apparent magnitude  (V)6.38 ± 0.01 [3]
Characteristics
Evolutionary stage main sequence [2]
Spectral type F5.5 V [4]
B−V color index +0.44 [5]
Astrometry
Radial velocity (Rv)14.9 ± 0.3 [6] km/s
Proper motion (μ)RA: +27.324 [2] mas/yr
Dec.: +66.539 [2] mas/yr
Parallax (π)26.8312±0.018  mas [2]
Distance 121.56 ± 0.08  ly
(37.27 ± 0.03  pc)
Absolute magnitude  (MV)+3.55 [1]
Details
Mass 1.36 [7]   M☉
Radius 1.38 [7]   R☉
Luminosity 3.18 [7]   L☉
Surface gravity (log g)4.29 [7]   cgs
Temperature 6,570 [7]   K
Metallicity [Fe/H]+0.02 [8]   dex
Rotation 1.072 days [9]
Rotational velocity (v sin i)8 [8]  km/s
Age 1.58 [10]   Gyr
Other designations
1 G. Caeli, CD−44°1546, CPD−44°478, GC 5380, HD 28246, HIP 20630, HR 1404, SAO 216790
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, [3] placing it near the max visibility to the unaided eye. The star is located relatively close at a distance of about 122 [2] light years but is recceding with a heliocentric radial velocity of 14.9  km/s . [6]

HD 28246 has a stellar classification of F5.5 V, [4] indicating that it is an ordinary F-type main sequence star. At present it has 1.36 times the mass of the Sun and shines at 3.18 solar luminosities from its photosphere at an effective temperature of 6,570  K , [7] giving it a yellow-white glow. HD 28246 has an iron abundance 105% [8] that of the Sun, placing it at solar metallicity. At an age of 1.58 billion years, [10] it spins leisurely with a projected rotational velocity of 8 km/s. [8]

References

  1. 1 2 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. XHIP record for this object at VizieR.
  2. 1 2 3 4 5 6 7 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.
  3. 1 2 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.
  4. 1 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. arXiv: astro-ph/0603770 . Bibcode:2006AJ....132..161G. doi: 10.1086/504637 .
  5. ↑ 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.
  6. 1 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. arXiv: 1606.08053 . Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. ISSN   1063-7737. S2CID   119231169.
  7. 1 2 3 4 5 6 Stassun, Keivan G.; et al. (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 .
  8. 1 2 3 4 Nordström, B.; Mayor, M.; Andersen, J.; Holmberg, J.; Pont, F.; Jørgensen, B. R.; Olsen, E. H.; Udry, S.; Mowlavi, N. (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. arXiv: astro-ph/0405198 . Bibcode:2004A&A...418..989N. doi: 10.1051/0004-6361:20035959 . ISSN   0004-6361.
  9. ↑ Oelkers, Ryan J.; Rodriguez, Joseph E.; Stassun, Keivan G.; Pepper, Joshua; Somers, Garrett; Kafka, Stella; Stevens, Daniel J.; Beatty, Thomas G.; Siverd, Robert J.; Lund, Michael B.; Kuhn, Rudolf B.; James, David; Gaudi, B. Scott (2018). "Variability Properties of Four Million Sources in the TESS Input Catalog Observed with the Kilodegree Extremely Little Telescope Survey". The Astronomical Journal. 155 (1): 39. arXiv: 1711.03608 . Bibcode:2018AJ....155...39O. doi: 10.3847/1538-3881/aa9bf4 .
  10. 1 2 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. arXiv: 1501.03154 . Bibcode:2015ApJ...804..146D. doi: 10.1088/0004-637X/804/2/146 . ISSN   0004-637X.
  11. 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. arXiv: 1208.2037 . Bibcode:2012MNRAS.427..343M. doi: 10.1111/j.1365-2966.2012.21873.x . ISSN   0035-8711.
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