HD 10307 (HR 483) is aspectroscopic binary star in the constellationAndromeda. The primary is similar to theSun in mass, temperature and metal content. It is situated about 42 light-years fromEarth. Its companion, HR 483 B, is a little-studiedred dwarf.
HD 10307 was identified in September 2003 by astrobiologistMargaret Turnbull from theUniversity of Arizona inTucson as one of the most promising nearby candidates for hosting life based on her analysis of theHabCat list of stars.[12]
HR 483 is a binary located 42.6ly away, in Andromeda. The two stars orbit one another elliptically (e=0.44),[13] approaching as close as 4.2AU and receding to 10.5 AU, with a period of just under twenty years.[7]
HD 10307 A, the larger component, is aG-type main-sequence star similar to the Sun, only slightly brighter, hotter, larger, and older than the Sun—though with a slightly smaller mass. It has a low level of activity and is a candidateMaunder minimum analog.[14] HR 483 B, the smaller component, appears to be ared dwarf, with as little as thirty-eight percent themass of the sun.[4] Adebris disk has been detected in this system.[15]
The presence of a moderately close companion could disrupt the orbit of a hypothetical planet in HD 10307'shabitable zone. However, the uncertainty of the orbital parameters makes it equally uncertain exactly where stable orbits would be in this system.[11]
There was aMETI message sent to HD 10307. It was transmitted fromEurasia's largestradar, 70-meterEupatoria Planetary Radar. The message was namedCosmic Call 2, it was sent on July 6, 2003, and it will arrive at HD 10307 in September 2044.[16]
^P. M. Bagnall (2012).The Star Atlas Companion: What you need to know about the Constellations.Bibcode:2012sacw.book.....B.
^Halbwachs, J. -L; Mayor, M.; Udry, S.; Fekel, F. C.; Hartkopf, W. I.; Levato, H.; Morrell, N. I.; Torres, G.; Udry, S. (2018). "Multiplicity among solar-type stars. IV. The CORAVEL radial velocities and the spectroscopic orbits of nearby K dwarfs".Astronomy and Astrophysics.619: A81.arXiv:1808.04605.Bibcode:2018A&A...619A..81H.doi:10.1051/0004-6361/201833377.S2CID119437322.
^Lubin, Dan; Tytler, David; Kirkman, David (March 2012), "Frequency of Maunder Minimum Events in Solar-type Stars Inferred from Activity and Metallicity Observations",The Astrophysical Journal Letters,747 (2): L32,Bibcode:2012ApJ...747L..32L,doi:10.1088/2041-8205/747/2/L32.
