Astronomy:XO-3

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Short description: Star in the constellation Camelopardalis


XO-3
Observation data
Equinox J2000.0]] (ICRS)
Constellation Camelopardalis[1]
Right ascension  04h 21m 52.7048s[2]
Declination +57° 49′ 01.889″[2]
Apparent magnitude (V) 9.80 ± 0.03[3]
Characteristics
Spectral type F5V[3]
Apparent magnitude (B) 10.25 ± 0.03[3]
Apparent magnitude (V) 9.80 ± 0.03[3]
Apparent magnitude (J) 9.013 ± 0.029[4]
Apparent magnitude (H) 8.845 ± 0.018[4]
Apparent magnitude (K) 8.791 ± 0.019[4]
Astrometry
Proper motion (μ) RA: −2.721(27)[2] mas/yr
Dec.: 4.186(23)[2] mas/yr
Parallax (π)4.8687 ± 0.0261[2] mas
Distance670 ± 4 ly
(205 ± 1 pc)
Details
Mass1.213 ± 0.066[5] M☉
Radius1.377 ± 0.083[5] R☉
Luminosity2.92+0.59−0.48[5] L☉
Surface gravity (log g)4.244 ± 0.041[5] cgs
Temperature6429 ± 100[5] K
Metallicity [Fe/H]–0.177 ± 0.08[5] dex
Age2.82+0.58−0.82[5] Gyr
Other designations
TYC 3727-1064-1, GSC 03727-01064, 2MASS J04215269+5749018[6]
Database references
SIMBADdata

XO-3 is a star in the constellation Camelopardalis. The star has a magnitude of 10 and is not visible to the naked eye but is visible through a small telescope.[3] A search for a binary companion star using adaptive optics at the MMT Observatory was negative.[7]

Planetary system

In 2007 the gas giant exoplanet XO-3b was discovered by the XO Telescope using the transit method. This object may be classed as brown dwarf because of its high mass.[3][8]

The XO-3 planetary system[5][9][10]
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
b 11.79 ± 0.59 MJ 0.0454 ± 0.00082 3.1915289 ± 0.0000032 0.2883 ± 0.0025 — —

See also

References

  1. ↑ Roman, Nancy G. (1987). "Identification of a Constellation From a Position". Publications of the Astronomical Society of the Pacific 99 (617): 695–699. doi:10.1086/132034. Bibcode: 1987PASP...99..695R.  Vizier query form
  2. ↑ 2.0 2.1 2.2 2.3 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940  Gaia DR3 record for this source at VizieR.
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 Johns-Krull, Christopher M. et al. (2008). "XO-3b: A Massive Planet in an Eccentric Orbit Transiting an F5V Star". The Astrophysical Journal 677 (1): 657–670. doi:10.1086/528950. Bibcode: 2008ApJ...677..657J. 
  4. ↑ 4.0 4.1 4.2 Cutri (2003). "2MASS===04215269+5749018". 2MASS All-Sky Catalog of Point Sources. http://vizier.u-strasbg.fr/viz-bin/VizieR-S?2MASS%20J04215269%2b5749018. 
  5. ↑ 5.0 5.1 5.2 5.3 5.4 5.5 5.6 5.7 Winn, Joshua N. et al. (2008). "The Transit Light Curve Project. IX. Evidence for a Smaller Radius of the Exoplanet XO-3b". The Astrophysical Journal 683 (2): 1076–1084. doi:10.1086/589737. Bibcode: 2008ApJ...683.1076W. 
  6. ↑ "SIMBAD query result: TYC 3727-1064-1 -- Star". Centre de Données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-id?Ident=TYC+3727-1064-1&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id. 
  7. ↑ Adams, E. R. et al. (2013). "Adaptive Optics Images. II. 12 Kepler Objects of Interest and 15 Confirmed Transiting Planets". The Astronomical Journal 146 (1): 9. doi:10.1088/0004-6256/146/1/9. Bibcode: 2013AJ....146....9A. 
  8. ↑ "XO-3b: Supersized planet or oasis in the 'brown dwarf desert'?" (Press release). Houston, Texas: Rice University. 2007-06-30. Retrieved 2022-01-01.
  9. ↑ Winn, Joshua N. et al. (2009). "On the Spin-Orbit Misalignment of the XO-3 Exoplanetary System". The Astrophysical Journal 700 (1): 302–308. doi:10.1088/0004-637X/700/1/302. Bibcode: 2009ApJ...700..302W. 
  10. ↑ Hirano, Teruyuki et al. (2011). "Further Observations of the Tilted Planet XO-3: A New Determination of Spin-Orbit Misalignment, and Limits on Differential Rotation". Publications of the Astronomical Society of Japan 63 (6): L57–L61. doi:10.1093/pasj/63.6.l57. Bibcode: 2011PASJ...63L..57H. 

External links

Coordinates: Sky map 04h 21m 52.7048s, +57° 49′ 01.886″




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