37 Geminorum

37 Geminorum is a star located at the northwest part of the northern zodiac constellation of Gemini. Its distance from the Sun is about 56.2 light years. It is a solitary, G-type main sequence star with a stellar classification of G0 V. No extrasolar planets have yet been discovered around it. It is the target of a METI message dubbed the Teen Age Message. It has also been listed in the Catalog of Nearby Habitable Systems.

37 Geminorum
Observation data
Epoch J2000      Equinox J2000
Constellation Gemini
Right ascension  06h 55m 18.66757s[1]
Declination +25° 22′ 32.5153 ″[1]
Apparent magnitude (V) 5.73[2]
Characteristics
Spectral type G0 V[3]
U−B color index +0.01[2]
B−V color index 0.599[4]
Astrometry
Radial velocity (Rv)-11.3[5] km/s
Proper motion (μ) RA: -35.91[1] mas/yr
Dec.: +25.65[1] mas/yr
Parallax (π)58.00 ± 0.40[1] mas
Distance56.2 ± 0.4 ly
(17.2 ± 0.1 pc)
Details
Luminosity1.22[6] L☉
Surface gravity (log g)4.29[3] cgs
Temperature5,874[7] K
Metallicity [Fe/H]-0.25[7] dex
Rotational velocity (v sin i)1.89[4] km/s
Age5.49[8] Gyr
Other designations
BD +25°1496, GCTP 1613.02, Gl 252, HD 50692, HIP 33277, HR 2569, SAO 78866.[9]
Database references
SIMBADdata

Teen Age Message
Main article: Teen Age Message

There was a METI message sent to 37 Geminorum. It was transmitted from Eurasia's largest radar, 70-meter Yevpatoria Planetary Radar. The message was named the Teen Age Message, it was sent on September 3, 2001, and it will arrive at 37 Geminorum in December 2057.[10]

Catalog of Nearby Habitable Systems
Main article: Catalog of Nearby Habitable Systems

The Catalog of Nearby Habitable Systems (HabCat) is a list of approximately 17,000 relatively close stars similar to the sun and considered able to support a planet habitable by humans. 37 Geminorum is on the HabCat list.[11]

gollark: Hmm, not the second bit though, I may have to say this.
gollark: I think they're aware of this, yes.
gollark: There you go.
gollark: This is a giant timesink but I am not doing much else so meh.
gollark: I have done the rest now and it *seems* complete.

See also

References
  1. van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.
  2. Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data. SIMBAD. Bibcode:1986EgUBV........0M.
  3. Gray, R.O.; et al. (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.
  4. Martínez-Arnáiz, R.; et al. (September 2010). "Chromospheric activity and rotation of FGK stars in the solar vicinity. An estimation of the radial velocity jitter" (PDF). Astronomy and Astrophysics. 520: A79. arXiv:1002.4391. Bibcode:2010A&A...520A..79M. doi:10.1051/0004-6361/200913725.
  5. Wilson, R. E. (1953). "General Catalogue of Stellar Radial Velocities". Washington. Carnegie Institute of Washington D.C. Bibcode:1953GCRV..C......0W.
  6. McDonald, I.; et al. (2012). "Fundamental Parameters and Infrared Excesses of Hipparcos Stars". Monthly Notices of the Royal Astronomical Society. 427 (1): 343–57. arXiv:1208.2037. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x.
  7. Holmberg, J.; et al. (2009). "The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics". Astronomy and Astrophysics. 501 (3): 941–947. arXiv:0811.3982. Bibcode:2009A&A...501..941H. doi:10.1051/0004-6361/200811191. See Vizier catalogue V/130.
  8. Vican, Laura (June 2012). "Age Determination for 346 Nearby Stars in the Herschel DEBRIS Survey". The Astronomical Journal. 143 (6): 135. arXiv:1203.1966. Bibcode:2012AJ....143..135V. doi:10.1088/0004-6256/143/6/135.
  9. "* 37 Gem". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2016-09-12.
  10. Zaitsev, Alexander (2006). "Messaging to Extra-Terrestrial Intelligence". arXiv:physics/0610031.
  11. Turnbull, Margaret C; Tarter, Jill C (2003). "Target Selection for SETI. I. A Catalog of Nearby Habitable Stellar Systems". The Astrophysical Journal Supplement Series. 145 (1): 181–198. arXiv:astro-ph/0210675. Bibcode:2003ApJS..145..181T. doi:10.1086/345779.
  • "37 Geminorum". SolStation. Archived from the original on 10 December 2005. Retrieved 2005-12-12.
  • HabCat A Catalog of Nearby Habitable Systems
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