14 Cancri

14 Cancri
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Cancer
Right ascension 08h 10m 27.181s
Declination +25° 30′ 26.40″
Apparent magnitude (V) +5.73
Characteristics
Evolutionary stage Subgiant
Spectral type G7 V
U−B color index +0.43
B−V color index +0.81
Astrometry
Radial velocity (Rv)−44.48±0.09 km/s
Proper motion (μ) RA: −72.954 mas/yr
Dec.: −347.888 mas/yr
Parallax (π)24.8472±0.0508 mas
Distance131.3 ± 0.3 ly
(40.25 ± 0.08 pc)
Absolute magnitude (MV)+2.65
Details
Mass1.49±0.04 M☉
Radius3.20±0.11 R☉
Luminosity8±1 L☉
Surface gravity (log g)3.87±0.08 cgs
Temperature5,311±23 K
Metallicity [Fe/H]−0.12±0.06 dex
Rotational velocity (v sin i)0.98±0.42 km/s
Age2.39±0.14 Gyr
Other designations
ψ2 Cnc, 14 Cnc, BD+25°1865, FK5 2633, GC 11091, HD 67767, HIP 40023, HR 3191, SAO 79995, CCDM 08104+2530
Database references
SIMBADdata

14 Cancri is a star in the northern zodiac constellation of Cancer. It can be referred to as ψ Cancri, very occasionally as its Bayer designation of ψ2 Cancri, to distinguish it from 13 Cancri, which is sometimes called ψ1 Cancri. This star is just barely visible to the naked eye, having an apparent visual magnitude of +5.73. Based upon an annual parallax shift of 24.85 mas as seen from Earth, it is located 131 light-years (40 pc) distant. It is drifting closer to the Sun with a line of sight velocity of −44 km/s, and may be a member of the Wolf 630 moving group of stars.

This object has a stellar classification of G7 V, which presents as a G-type main-sequence star. However, it is actually a more evolved subgiant star as indicated by a surface gravity of log g = 3.87 and its position in the H-R diagram. As such, it has an estimated 1.5 times the mass of the Sun and 3.2 times the Sun's radius. The star is 2.4 billion years old with what appears to be a leisurely rotation rate, judging by a projected rotational velocity of 0.98 km/s. It is radiating eight times the Sun's luminosity from its photosphere at an effective temperature of 5,311 K.

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 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 3 4 Argue, A. N. (1966), "UBV photometry of 550 F, G and K type stars", Monthly Notices of the Royal Astronomical Society, 133 (4): 475, Bibcode:1966MNRAS.133..475A, doi:10.1093/mnras/133.4.475.
  4. 1 2 3 4 5 Jofré, E.; et al. (2015), "Stellar parameters and chemical abundances of 223 evolved stars with and without planets", Astronomy & Astrophysics, 574: A50, arXiv:1410.6422, Bibcode:2015A&A...574A..50J, doi:10.1051/0004-6361/201424474, S2CID 53666931.
  5. 1 2 Cowley, A. P.; Bidelman, W. P. (February 1979), "MK spectral types for some F and G stars", Publications of the Astronomical Society of the Pacific, 91: 83–86, Bibcode:1979PASP...91...83C, doi:10.1086/130446.
  6. ↑ "tet Cnc", SIMBAD, Centre de données astronomiques de Strasbourg, retrieved 2017-09-08.
  7. ↑ Kostjuk, N. D. (2004), "VizieR Online Data Catalog: HD-DM-GC-HR-HIP-Bayer-Flamsteed Cross Index (Kostjuk, 2002)", VizieR On-line Data Catalog: IV/27A. Originally Published in: Institute of Astronomy of Russian Academy of Sciences (2002), 4027, Bibcode:2004yCat.4027....0K.
  8. ↑ McDonald, A. R. E.; Hearnshaw, J. B. (August 1983), "The Wolf 630 moving group of stars", Monthly Notices of the Royal Astronomical Society, 204 (3): 841–852, Bibcode:1983MNRAS.204..841M, doi:10.1093/mnras/204.3.841.