- HD 10307
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HD 10307 A/B Observation data
Epoch J2000.0 Equinox J2000.0Constellation Andromeda Right ascension 01h 41m 47.1s Declination +42° 36' 48.1" Apparent magnitude (V) +4.95/+12.5 Characteristics Spectral type G1.5 V/M V U−B color index 0.11 B−V color index 0.62 Variable type None Astrometry Radial velocity (Rv) +3.1 km/s Proper motion (μ) RA: 791.35 mas/yr
Dec.: -180.16 mas/yrParallax (π) 79.09 ± 0.83 mas Distance 41.2 ± 0.4 ly
(12.6 ± 0.1 pc)Absolute magnitude (MV) 4.30/11.9 Details Mass 0.97/0.29 M☉ Radius 1.20/? R☉ Surface gravity (log g) 4.35/? Luminosity 1.44/0.0013 L☉ Temperature 5881 ± 4.0 [1]/? K Metallicity 96% Sun Rotation ?/? Age 7.0 × 109[2] years Orbit Companion HR 483 B Period (P) 19.5 yr Semimajor axis (a) 0.58" Eccentricity (e) 0.43 Inclination (i) 103° Database references SIMBAD data ARICNS data Other designations HD 10307 (aka HR 483 A) is a star similar to the sun in mass, temperature and metal content, situated about 41 light-years from Earth in the constellation Andromeda. Its companion, HR 483 B, is a little-studied red dwarf.
HD 10307 was identified in September 2003 by astrobiologist Margaret Turnbull from the University of Arizona in Tucson as one of the most promising nearby candidates for hosting life based on her analysis of the HabCat list of stars.
Contents
System
HR 483 is a binary star located 41.2 ly away, in Andromeda. The pair orbit one another elliptically (e=0.43), approaching as close as 4.2 AU and receding to 10.5 AU, with a period of just under twenty years. Due to the high margins of error on the mass estimates for the two stars, these orbital parameters are approximate.
HD 10307, the larger component, is a main sequence, yellow, sun-like star, only slightly brighter, hotter, and larger than the Sun. HR 483 B, the smaller component, appears to be a red dwarf, with as little as thirty percent the mass of the sun.
Possibility of planets and life
The presence of a moderately close companion could disrupt the orbit of a hypothetical planet in HD 10307's habitable zone. However, the uncertainty of the orbital parameters makes it equally uncertain exactly where stable orbits would be in this system.
METI message to HD 10307
There was a METI message sent to HD 10307. It was transmitted from Eurasia's largest radar, 70-meter Eupatoria Planetary Radar. The message was named Cosmic Call 2, it was sent on July 6, 2003, and it will arrive at HD 10307 in September 2044.[3]
References
- ^ Kovtyukh et al. (2003). "High precision effective temperatures for 181 F-K dwarfs from line-depth ratios". Astronomy and Astrophysics 411 (3): 559–564. arXiv:astro-ph/0308429. Bibcode 2003A&A...411..559K. doi:10.1051/0004-6361:20031378. http://www.aanda.org/articles/aa/full/2003/46/aa3944/aa3944.html.
- ^ Mamajek, Eric E.; Hillenbrand, Lynne A. (November 2008). "Improved Age Estimation for Solar-Type Dwarfs Using Activity-Rotation Diagnostics". The Astrophysical Journal 687 (2): 1264–1293. Bibcode 2008ApJ...687.1264M. doi:10.1086/591785.
- ^ (Russian) http://www.cplire.ru/rus/ra&sr/VAK-2004.html
External links
- High proper-motion Star
- GJ 67B
- Image HD 10307
- ARICNS: 00144 (A)
- ARICNS: 00145 (B)
- NStars: 0141+4236
- SolStation: HR 483 / HD 10307 AB
- Space.com: Top 10 List of Habitable Stars to Guide Search
- Spectra HD 10307
Star systems within 40–50 light-years from Earth with brightest member's absolute magnitude of +8.5 or brighter.Alpha Ophiuchi «Rasalhague» (46.7 ± 0.6 ly; 1 star)Capella (42.2 ± 0.5 ly; 4 stars)Alpha Cephei «Alderamin» (48.8 ± 0.4 ly; 1 star)Iota Ursae Majoris «Talitha Borealis» (47.7 ± 0.6 ly; 4 stars)Beta Trianguli Australis (40.2 ± 0.3 ly; 2 stars)‡ • Theta Ursae Majoris «Alhaud» (44.0 ± 0.4 ly; 3 stars) • Delta Aquilae «Denebokab» (50.1 ± 0.6 ly; 3 stars)‡36 Ursae Majoris (41.9 ± 0.4 ly; 2 stars) • Upsilon Andromedae (43.9 ± 0.4 ly; 2 stars, 4 planets: planet b • planet c • planet d • planet e) • 10 Tauri (44.8 ± 0.5 ly; 2 stars) • Iota Piscium (45.0 ± 0.5 ly; 1 star) • Alpha Fornacis «Dalim» (46.0 ± 0.4 ly; 2 stars) • Theta Boötis «Asellus Primus» (47.5 ± 0.4 ly; 2 stars) • Psi Capricorni «Yue» (47.9 ± 0.6 ly; 1 star) • Alpha Corvi «Alchiba» (48.2 ± 0.5 ly; 1 star) • Eta Leporis (49.1 ± 0.5 ly; 1 star) • Nu Phoenicis (49.1 ± 0.5 ly; 1 star) • Sigma Boötis «Hemelein Secunda» (50.4 ± 0.6 ly; 2 stars)‡Beta Aquilae «Alshain» (44.7 ± 0.5 ly; 2 stars) • b (31) Aquilae (49.4 ± 0.6 ly; 3 stars)Rho¹ (55) Cancri (40.9 ± 0.4 ly; 2 stars, 5 planets: planet e • planet b • planet c • planet f • planet d) • HR 483 (41.2 ± 0.4 ly; 2 stars) • Lambda Aurigae «Al Hurr» (41.2 ± 0.5 ly; 2 stars) • HR 683 (41.4 ± 0.4 ly; 1 star) • i (44) Boötis (41.6 ± 0.3 ly; 3 stars) • HR 6094 (42.0 ± 0.5 ly; 2 stars, 1 planet: planet b) • HR 6998 (42.4 ± 0.5 ly; 1 star) • 58 Eridani (43.4 ± 0.5 ly; 1 star) • HR 8501 (44.4 ± 0.4 ly; 2 stars) • 18 Scorpii (45.7 ± 0.6 ly; 1 star) • 47 Ursae Majoris (45.9 ± 0.4 ly; 1 star, 3 planets: planet b • planet c • planet d) • 26 Draconis (45.9 ± 0.3 ly; 3 stars) • Pi¹ Ursae Majoris (46.6 ± 0.5 ly; 1 star) • 72 Herculis (46.9 ± 0.4 ly; 1 star) • Nu² Lupi (47.5 ± 0.5 ly; 1 star, 3 planets: planet b • planet c • planet d) • HR 7898 (47.8 ± 0.6 ly; 1 star) • Psi Serpentis (47.9 ± 0.6 ly; 2 stars) • HR 3862 (48.5 ± 0.5 ly; 1 star) • 20 Leonis Minoris «Cor» (48.6 ± 0.6 ly; 1 star) • HD 176051 (48.9 ± 0.4 ly; 2 stars, 1 planet: planet b) • Mu Arae (49.8 ± 0.6 ly; 1 star, 4 planets: planet d • planet e • planet b • planet c)‡ • 51 Pegasi (50.1 ± 0.6 ly; 1 star, 1 planet: planet b «Bellerophon»)‡ • HR 2007 (50.8 ± 0.9 ly; 1 star, 1 planet: planet b)‡HR 4587 (42.1 ± 0.4 ly; 1 star) • Gamma Cephei «Errai» (45.0 ± 0.3 ly; 2 stars, 1 planet: planet b) • Eta Cephei «Al Agemim» (46.8 ± 0.3 ly; 1 star)HR 3384 (39.7 ± 0.3 ly; 1 star)‡ • HR 1925 (39.9 ± 0.4 ly; 1 star)‡ • Gliese 435 (40.8 ± 0.5 ly; 1 star) • HR 3259 (41.0 ± 0.4 ly; 1 star, 3 planets: planet b • planet c • planet d) • Gliese 349 (41.4 ± 0.6 ly; 1 star) • HR 6518 (41.7 ± 0.3 ly; 1 star) • HD 40307 (41.8 ± 0.3 ly; 1 star, 3 planets: planet b • planet c • planet d) • Gliese 428 (42.0 ± 1.0 ly; 2 stars) • Gliese 707 (42.3 ± 0.7 ly; 1 star) • Gliese 204 (42.3 ± 0.5 ly; 1 star) • Gliese 167 (42.7 ± 0.3 ly; 1 star) • Gliese 425 (42.9 ± 1.0 ly; 2 stars) • Gliese 716 (43.1 ± 0.5 ly; 1 star) • Gliese 174 (44.0 ± 0.8 ly; 1 star) • Gliese 656 (44.6 ± 0.6 ly; 1 star) • Gliese 5 (44.7 ± 0.5 ly; 2 stars) • AB Doradus (48.7 ± 0.4 ly; 2 stars)In left column are stellar classes of primary members of star systems. ‡Distance error margin extends out of declared distance interval. Italic are systems possibly located within declared distance interval, but probably not.Categories:- Andromeda constellation
- Binary stars
- Henry Draper Catalogue objects
- HIP objects
- M-type main sequence stars
- G-type main sequence stars
- Main sequence star stubs
- Multiple star stubs
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