| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lynx [1] |
| Right ascension | 07h 46m 51.9615s [2] |
| Declination | +39° 05′ 40.461″ [2] |
| Apparent magnitude (V) | 12.13 ± 0.03 [3] |
| Characteristics | |
| Spectral type | G8V [3] |
| Apparent magnitude (V) | 12.13 ± 0.03 [3] |
| Apparent magnitude (R) | 11.844 [4] |
| Apparent magnitude (J) | 10.774 ± 0.019 [5] |
| Apparent magnitude (H) | 10.443 ± 0.021 [5] |
| Apparent magnitude (K) | 10.345 ± 0.018 [5] |
| Astrometry | |
| Proper motion (μ) |
RA: −21.509(18)
mas/
yr
[2] Dec.: −23.910(13) mas/ yr [2] |
| Parallax (π) | 3.6517 ± 0.0173 mas [2] |
| Distance | 893 ± 4
ly (274 ± 1 pc) |
| Absolute magnitude (MV) | 5.06 ± 0.12 [6] |
| Details | |
| Mass | 0.88 ± 0.03 [6] M☉ |
| Radius | 1.08 ± 0.04 [6] R☉ |
| Luminosity | 0.88 ± 0.09 [6] L☉ |
| Surface gravity (log g) | 4.31 ± 0.03 [6] cgs |
| Temperature | 5370 ± 70 [6] K |
| Metallicity [Fe/H] | +0.05 ± 0.06 [6] dex |
| Age | 14.8 ± 2.0 [6] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
XO-5 is a yellow dwarf main sequence star located approximately 893 light-years away from Earth in the Lynx constellation. It has a magnitude of about 12 and cannot be seen with the naked eye but is visible through a small telescope. [3] [6]
XO-5 has a suspected red dwarf companion with a temperature 3500+250
−150
K, on a wide orbit.
[8]
Naming
The star XO-5 is named Absolutno. The name was selected in the NameExoWorlds campaign by the Czech Republic, during the 100th anniversary of the IAU. Absolutno is a fictional miraculous substance in the sci-fi novel Továrna na absolutno (The Factory for the Absolute). [9] [10]
Planetary system
The exoplanet XO-5b was discovered by the XO Telescope using the transit method in 2008. This planet is classified as a hot jupiter. [3] A search for transit timing variations caused by additional planets was negative. [11]
| Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b / Makropulos | 1.059 ± 0.028 MJ | 0.0488 ± 0.0006 | 4.1877545 ± 0.0000016 | 0 [note 1] | — | — |
See also
Notes
References
- ^ Roman, Nancy G. (1987). "Identification of a Constellation From a Position". Publications of the Astronomical Society of the Pacific. 99 (617): 695–699. Bibcode: 1987PASP...99..695R. doi: 10.1086/132034. Vizier query form
- ^ a b c d 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.
- ^ a b c d e Burke, Christopher J.; et al. (2008). "XO-5b: A Transiting Jupiter-sized Planet with a 4 day Period". The Astrophysical Journal. 686 (2): 1331–1340. arXiv: 0805.2399. Bibcode: 2008ApJ...686.1331B. doi: 10.1086/591497. S2CID 14043772.
- ^ Zacharias; et al. (2009). "3UC===259-099032". Third U.S. Naval Observatory CCD Astrograph Catalog. Retrieved 2012-02-21.
- ^ a b c Cutri; et al. (2003). "2MASS===07465196+3905404". 2MASS All-Sky Catalog of Point Sources. Retrieved 2012-02-20.
- ^ a b c d e f g h i j k Pál, A.; et al. (2009). "Independent Confirmation and Refined Parameters of the Hot Jupiter XO-5b". The Astrophysical Journal. 700 (1): 783–790. arXiv: 0810.0260. Bibcode: 2009ApJ...700..783P. doi: 10.1088/0004-637X/700/1/783. S2CID 18318327.
- ^ "GSC 02959-00729". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2009-04-26.
- ^ Piskorz, Danielle; Knutson, Heather A.; Ngo, Henry; Muirhead, Philip S.; Batygin, Konstantin; Crepp, Justin R.; Hinkley, Sasha; Morton, Timothy D. (2015), "Friends of Hot Jupiters. III. An Infrared Spectroscopic Search for Low-Mass Stellar Companions", The Astrophysical Journal, 814 (2): 148, arXiv: 1510.08062, Bibcode: 2015ApJ...814..148P, doi: 10.1088/0004-637X/814/2/148, S2CID 11525988
- ^ "Approved names". NameExoworlds. Retrieved 2020-01-02.
- ^ "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.
- ^ Maciejewski, G.; et al. (2011). "Refining Parameters of the XO-5 Planetary System with High-Precision Transit Photometry" (PDF). Acta Astronomica. 61 (1): 25–35. arXiv: 1103.1325. Bibcode: 2011AcA....61...25M.
- ^ Sada, Pedro V.; et al. (2012). "Extrasolar Planet Transits Observed at Kitt Peak National Observatory". Publications of the Astronomical Society of the Pacific. 124 (913): 212–229. arXiv: 1202.2799. Bibcode: 2012PASP..124..212S. doi: 10.1086/665043. S2CID 29665395.
External links
- "XO-5". Exoplanets. Archived from the original on 2016-03-03. Retrieved 2009-04-28.
 | This main-sequence-star-related article is a stub. You can help Wikipedia by expanding it. |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Lynx [1] |
| Right ascension | 07h 46m 51.9615s [2] |
| Declination | +39° 05′ 40.461″ [2] |
| Apparent magnitude (V) | 12.13 ± 0.03 [3] |
| Characteristics | |
| Spectral type | G8V [3] |
| Apparent magnitude (V) | 12.13 ± 0.03 [3] |
| Apparent magnitude (R) | 11.844 [4] |
| Apparent magnitude (J) | 10.774 ± 0.019 [5] |
| Apparent magnitude (H) | 10.443 ± 0.021 [5] |
| Apparent magnitude (K) | 10.345 ± 0.018 [5] |
| Astrometry | |
| Proper motion (μ) |
RA: −21.509(18)
mas/
yr
[2] Dec.: −23.910(13) mas/ yr [2] |
| Parallax (π) | 3.6517 ± 0.0173 mas [2] |
| Distance | 893 ± 4
ly (274 ± 1 pc) |
| Absolute magnitude (MV) | 5.06 ± 0.12 [6] |
| Details | |
| Mass | 0.88 ± 0.03 [6] M☉ |
| Radius | 1.08 ± 0.04 [6] R☉ |
| Luminosity | 0.88 ± 0.09 [6] L☉ |
| Surface gravity (log g) | 4.31 ± 0.03 [6] cgs |
| Temperature | 5370 ± 70 [6] K |
| Metallicity [Fe/H] | +0.05 ± 0.06 [6] dex |
| Age | 14.8 ± 2.0 [6] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
XO-5 is a yellow dwarf main sequence star located approximately 893 light-years away from Earth in the Lynx constellation. It has a magnitude of about 12 and cannot be seen with the naked eye but is visible through a small telescope. [3] [6]
XO-5 has a suspected red dwarf companion with a temperature 3500+250
−150
K, on a wide orbit.
[8]
Naming
The star XO-5 is named Absolutno. The name was selected in the NameExoWorlds campaign by the Czech Republic, during the 100th anniversary of the IAU. Absolutno is a fictional miraculous substance in the sci-fi novel Továrna na absolutno (The Factory for the Absolute). [9] [10]
Planetary system
The exoplanet XO-5b was discovered by the XO Telescope using the transit method in 2008. This planet is classified as a hot jupiter. [3] A search for transit timing variations caused by additional planets was negative. [11]
| Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b / Makropulos | 1.059 ± 0.028 MJ | 0.0488 ± 0.0006 | 4.1877545 ± 0.0000016 | 0 [note 1] | — | — |
See also
Notes
References
- ^ Roman, Nancy G. (1987). "Identification of a Constellation From a Position". Publications of the Astronomical Society of the Pacific. 99 (617): 695–699. Bibcode: 1987PASP...99..695R. doi: 10.1086/132034. Vizier query form
- ^ a b c d 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.
- ^ a b c d e Burke, Christopher J.; et al. (2008). "XO-5b: A Transiting Jupiter-sized Planet with a 4 day Period". The Astrophysical Journal. 686 (2): 1331–1340. arXiv: 0805.2399. Bibcode: 2008ApJ...686.1331B. doi: 10.1086/591497. S2CID 14043772.
- ^ Zacharias; et al. (2009). "3UC===259-099032". Third U.S. Naval Observatory CCD Astrograph Catalog. Retrieved 2012-02-21.
- ^ a b c Cutri; et al. (2003). "2MASS===07465196+3905404". 2MASS All-Sky Catalog of Point Sources. Retrieved 2012-02-20.
- ^ a b c d e f g h i j k Pál, A.; et al. (2009). "Independent Confirmation and Refined Parameters of the Hot Jupiter XO-5b". The Astrophysical Journal. 700 (1): 783–790. arXiv: 0810.0260. Bibcode: 2009ApJ...700..783P. doi: 10.1088/0004-637X/700/1/783. S2CID 18318327.
- ^ "GSC 02959-00729". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2009-04-26.
- ^ Piskorz, Danielle; Knutson, Heather A.; Ngo, Henry; Muirhead, Philip S.; Batygin, Konstantin; Crepp, Justin R.; Hinkley, Sasha; Morton, Timothy D. (2015), "Friends of Hot Jupiters. III. An Infrared Spectroscopic Search for Low-Mass Stellar Companions", The Astrophysical Journal, 814 (2): 148, arXiv: 1510.08062, Bibcode: 2015ApJ...814..148P, doi: 10.1088/0004-637X/814/2/148, S2CID 11525988
- ^ "Approved names". NameExoworlds. Retrieved 2020-01-02.
- ^ "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.
- ^ Maciejewski, G.; et al. (2011). "Refining Parameters of the XO-5 Planetary System with High-Precision Transit Photometry" (PDF). Acta Astronomica. 61 (1): 25–35. arXiv: 1103.1325. Bibcode: 2011AcA....61...25M.
- ^ Sada, Pedro V.; et al. (2012). "Extrasolar Planet Transits Observed at Kitt Peak National Observatory". Publications of the Astronomical Society of the Pacific. 124 (913): 212–229. arXiv: 1202.2799. Bibcode: 2012PASP..124..212S. doi: 10.1086/665043. S2CID 29665395.
External links
- "XO-5". Exoplanets. Archived from the original on 2016-03-03. Retrieved 2009-04-28.
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| This main-sequence-star-related article is a stub. You can help Wikipedia by expanding it. |