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
[edit]- ^ a b c 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.
- ^ a b c d e f g h 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 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 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.
- ^ a b 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.
- ^ a b c 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.
- ^ a b c d e f g 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.
- ^ a b c d e 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.
- ^ a b 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.
- ^ a b c 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.
- ^ 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.
