35 Cancri
| Observation data Epoch J2000.0 Equinox ICRS | |
|---|---|
| Constellation | Cancer[1] |
| Right ascension | 08h 35m 19.44613s[2] |
| Declination | +19° 35′ 24.2306″[2] |
| Apparent magnitude (V) | +6.55[1] |
| Characteristics | |
| Evolutionary stage | subgiant[3][2] |
| Spectral type | G0 III[4] |
| B−V color index | +0.681±0.013[1] |
| Astrometry | |
| Radial velocity (Rv) | +34.9±1.2[1] km/s |
| Proper motion (μ) | RA: −34.554[2] mas/yr Dec.: −12.391[2] mas/yr |
| Parallax (π) | 5.3538±0.0258 mas[2] |
| Distance | 609 ± 3 ly (186.8 ± 0.9 pc) |
| Absolute magnitude (MV) | 0.22[1] |
| Details | |
| Mass | 2.51[5] M☉ |
| Radius | 9.0[5] R☉ |
| Luminosity | 71[5] L☉ |
| Surface gravity (log g) | 2.93[5] cgs |
| Temperature | 5,581[5] K |
| Metallicity [Fe/H] | +0.28[5] dex |
| Rotation | 10.96 days[6] |
| Rotational velocity (v sin i) | 99.0[7] km/s |
| Age | 346[8] Myr |
| Other designations | |
| 35 Cnc, BD+20°2118, GC 11904, HD 72779, HIP 42133, HR 3387, SAO 97928[9] | |
| Database references | |
| SIMBAD | data |
35 Cancri is a star in the zodiac constellation of Cancer, located about 609 light-years from the Sun. It is a challenge to view with the naked eye even under ideal seeing conditions, having an apparent visual magnitude of +6.55.[1] The star is moving further from the Earth with a heliocentric radial velocity of +35 km/s,[1] and is a member of the Beehive Cluster.[10]
This is a subgiant star[3] with a stellar classification of G0 III.[4] It is rotating at a relatively fast clip, giving it an oblate shape with an equatorial bulge that is 5% larger than the polar radius.[11] 35 Cancri has a projected rotational velocity of 99 km/s.[7] This rotation is expected to decrease significantly as the star expands into a giant.[4] It has nine times the radius of the Sun, and is radiating 71 times the Sun's luminosity from its photosphere at an effective temperature of 5,581 K.[5]
References
[edit]- 1 2 3 4 5 6 7 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.
- 1 2 3 4 5 6 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.
- 1 2 Yang, X. L.; et al. (November 2015), "Chemical Abundances of Member Stars in the Open Cluster NGC 2632 (Praesepe)", The Astronomical Journal, 150 (5): 10, Bibcode:2015AJ....150..158Y, doi:10.1088/0004-6256/150/5/158, S2CID 125381412, 158
- 1 2 3 Gray, R. O.; et al. (2001), "The Physical Basis of Luminosity Classification in the Late A-, F-, and Early G-Type Stars. I. Precise Spectral Types for 372 Stars", The Astronomical Journal, 121 (4): 2148, Bibcode:2001AJ....121.2148G, doi:10.1086/319956.
- 1 2 3 4 5 6 7 Ayres, Thomas (2023). "In the Trenches of the Solar-Stellar Connection. VII. Wilson-Bappu 2022". The Astrophysical Journal Supplement Series. 266 (1): 6. Bibcode:2023ApJS..266....6A. doi:10.3847/1538-4365/acb535.
- ↑ 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.
- 1 2 van Saders, Jennifer L.; Pinsonneault, Marc H. (October 2013), "Fast Star, Slow Star; Old Star, Young Star: Subgiant Rotation as a Population and Stellar Physics Diagnostic", The Astrophysical Journal, 776 (2): 20, arXiv:1306.3701, Bibcode:2013ApJ...776...67V, doi:10.1088/0004-637X/776/2/67, S2CID 119097746, 67.
- ↑ Anderson, Richard I.; Hunt, Emily L. (2025). "A bird's eye view of stellar evolution through populations of variable stars in Galactic open clusters". Astronomy and Astrophysics. 700: L13. arXiv:2508.12866. Bibcode:2025A&A...700L..13A. doi:10.1051/0004-6361/202555111.
- ↑ "35 Cnc". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-02-28.
- ↑ Wang, P. F.; et al. (March 2014), "Characterization of the Praesepe Star Cluster by Photometry and Proper Motions with 2MASS, PPMXL, and Pan-STARRS", The Astrophysical Journal, 784 (1): 10, arXiv:1401.7424, Bibcode:2014ApJ...784...57W, doi:10.1088/0004-637X/784/1/57, S2CID 59406128, 57.
- ↑ van Belle, Gerard T. (March 2012), "Interferometric observations of rapidly rotating stars", The Astronomy and Astrophysics Review, 20 (1): 51, arXiv:1204.2572, Bibcode:2012A&ARv..20...51V, doi:10.1007/s00159-012-0051-2, S2CID 119273474.
