K2-58

K2-58
Observation data; Epoch J2000 Equinox ICRS
Constellation	Aquarius
Right ascension	22h 15m 17.2365s
Declination	−14° 02′ 59.313″
Apparent magnitude (V)	12.13
Characteristics
Evolutionary stage	Main sequence
Spectral type	K0
Astrometry
Radial velocity (Rv)	6.48±0.42 km/s
Proper motion (μ)	RA: 4.67±0.02 mas/yr ; Dec.: -11.11±0.02 mas/yr
Parallax (π)	5.4932±0.0194 mas
Distance	594 ± 2 ly ; (182.0 ± 0.6 pc)
Details
Mass	0.858+0.022; −0.027 M☉
Radius	0.803+0.034; −0.020 R☉
Luminosity	0.57 L☉
Surface gravity (log g)	4.5 cgs
Temperature	5,038 K
Metallicity [Fe/H]	0.25 dex
Rotational velocity (v sin i)	2.2±0.5 km/s
Age	5.1+3.1; −2.6 Gyr
Other designations
	EPIC 206026904, 2MASS J22151722-1402593, Gaia DR3 2599975224481836672
Database references
SIMBAD	data
Exoplanet Archive	data

K2-58 (also designated as EPIC 206026904) is a G-type main-sequence star in the constellation of Aquarius, approximately 596 light-years from the Solar System. The star is metal-rich, having 155% of the Solar abundance of elements heavier than helium. The star is located in a region where a hypothetical observer in the K2-58 system can see Venus transiting the Sun.

Planetary system

The planetary system has three confirmed exoplanets, named K2-58 b, K2-58 c, and K2-58 d, discovered in 2016.

The K2-58 planetary system
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination (°)	Radius
c	—	0.0350	2.53726	—	86.1^+2.8 _−7.3	1.62 `R`_🜨
b	—	0.0692	7.05254	—	88.9^+0.8 _−1.6	2.68 `R`_🜨
d	—	0.1517	22.8827	—	89.43^+0.41 _−0.81	1.71 `R`_🜨

References

↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific. 99 (617): 695. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Constellation record for this object at VizieR.
1 2 3 4 5 6 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.
↑ Hardegree-Ullman, Kevin K.; Zink, Jon K.; Christiansen, Jessie L.; Dressing, Courtney D.; Ciardi, David R.; Schlieder, Joshua E. (2020). "Scaling K2. I. Revised Parameters for 222,088 K2 Stars and a K2 Planet Radius Valley at 1.9 R_⊕". The Astrophysical Journal Supplement Series. 247 (1): 28. arXiv:2001.11511. Bibcode:2020ApJS..247...28H. doi:10.3847/1538-4365/ab7230.
1 2 3 Mayo, Andrew W.; Vanderburg, Andrew; Latham, David W.; Bieryla, Allyson; Morton, Timothy D.; Buchhave, Lars A.; Dressing, Courtney D.; Beichman, Charles; Berlind, Perry; Calkins, Michael L.; Ciardi, David R.; Crossfield, Ian J. M.; Esquerdo, Gilbert A.; Everett, Mark E.; Gonzales, Erica J.; Hirsch, Lea A.; Horch, Elliott P.; Howard, Andrew W.; Howell, Steve B.; Livingston, John; Patel, Rahul; Petigura, Erik A.; Schlieder, Joshua E.; Scott, Nicholas J.; Schumer, Clea F.; Sinukoff, Evan; Teske, Johanna; Winters, Jennifer G. (2018), "275 Candidates and 149 Validated Planets Orbiting Bright Stars inK2 Campaigns 0–10", The Astronomical Journal, 155 (3): 136, arXiv:1802.05277, Bibcode:2018AJ....155..136M, doi:10.3847/1538-3881/aaadff, S2CID 85524387
↑ Ostberg, Colby; Kane, Stephen R.; Li, Zhexing; Schwieterman, Edward W.; Hill, Michelle L.; Bott, Kimberly; Dalba, Paul A.; Fetherolf, Tara; Head, James W.; Unterborn, Cayman T. (2023). "The Demographics of Terrestrial Planets in the Venus Zone". The Astronomical Journal. 165 (4): 168. arXiv:2302.03055. Bibcode:2023AJ....165..168O. doi:10.3847/1538-3881/acbfaf.
1 2 3 4 5 Brewer, John M.; Fischer, Debra A. (2018). "Spectral Properties of Cool Stars: Extended Abundance Analysis of Kepler Objects of Interest". The Astrophysical Journal Supplement Series. 237 (2): 38. arXiv:1804.00673. Bibcode:2018ApJS..237...38B. doi:10.3847/1538-4365/aad501. S2CID 119431797.
↑ Zink, Jon K.; Hardegree-Ullman, Kevin K.; Christiansen, Jessie L.; Petigura, Erik A.; Boley, Kiersten M.; Bhure, Sakhee; Rice, Malena; Yee, Samuel W.; Isaacson, Howard; Fernandes, Rachel B.; Howard, Andrew W.; Blunt, Sarah; Lubin, Jack; Chontos, Ashley; Pidhorodetska, Daria; MacDougall, Mason G. (2023). "Scaling K2. VI. Reduced Small-planet Occurrence in High-galactic-amplitude Stars". The Astronomical Journal. 165 (6): 262. arXiv:2305.13389. Bibcode:2023AJ....165..262Z. doi:10.3847/1538-3881/acd24c.
↑ "K2-58". SIMBAD. Centre de données astronomiques de Strasbourg.
↑ Kruse, Ethan; Agol, Eric; Luger, Rodrigo; Foreman-Mackey, Daniel (2019), "Detection of Hundreds of New Planet Candidates and Eclipsing Binaries in K2 Campaigns 0–8", The Astrophysical Journal Supplement Series, 244 (1): 11, arXiv:1907.10806, Bibcode:2019ApJS..244...11K, doi:10.3847/1538-4365/ab346b, S2CID 198901606
↑ "Exoplanet-catalog". Exoplanet Exploration: Planets Beyond our Solar System. Retrieved 2019-07-16.
↑ "EPIC 206026904". www.cfa.harvard.edu. Retrieved 2019-07-16.
↑ "Open Exoplanet Catalogue - K2-58 b". www.openexoplanetcatalogue.com. Retrieved 2019-07-16.
1 2 Crossfield, Ian J. M.; et al. (2016). "197 Candidates and 104 Validated Planets in K2's First Five Fields". The Astrophysical Journal Supplement Series. 226 (1): 7. arXiv:1607.05263. Bibcode:2016ApJS..226....7C. doi:10.3847/0067-0049/226/1/7.

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[Roman1987-1] Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific. 99 (617): 695. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Constellation record for this object at VizieR.

[DR3-2] 1 2 3 4 5 6 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.

[hu2020-3] Hardegree-Ullman, Kevin K.; Zink, Jon K.; Christiansen, Jessie L.; Dressing, Courtney D.; Ciardi, David R.; Schlieder, Joshua E. (2020). "Scaling K2. I. Revised Parameters for 222,088 K2 Stars and a K2 Planet Radius Valley at 1.9 R_⊕". The Astrophysical Journal Supplement Series. 247 (1): 28. arXiv:2001.11511. Bibcode:2020ApJS..247...28H. doi:10.3847/1538-4365/ab7230.

[Mayo2018-4] 1 2 3 Mayo, Andrew W.; Vanderburg, Andrew; Latham, David W.; Bieryla, Allyson; Morton, Timothy D.; Buchhave, Lars A.; Dressing, Courtney D.; Beichman, Charles; Berlind, Perry; Calkins, Michael L.; Ciardi, David R.; Crossfield, Ian J. M.; Esquerdo, Gilbert A.; Everett, Mark E.; Gonzales, Erica J.; Hirsch, Lea A.; Horch, Elliott P.; Howard, Andrew W.; Howell, Steve B.; Livingston, John; Patel, Rahul; Petigura, Erik A.; Schlieder, Joshua E.; Scott, Nicholas J.; Schumer, Clea F.; Sinukoff, Evan; Teske, Johanna; Winters, Jennifer G. (2018), "275 Candidates and 149 Validated Planets Orbiting Bright Stars inK2 Campaigns 0–10", The Astronomical Journal, 155 (3): 136, arXiv:1802.05277, Bibcode:2018AJ....155..136M, doi:10.3847/1538-3881/aaadff, S2CID 85524387

[ostberg2023-5] Ostberg, Colby; Kane, Stephen R.; Li, Zhexing; Schwieterman, Edward W.; Hill, Michelle L.; Bott, Kimberly; Dalba, Paul A.; Fetherolf, Tara; Head, James W.; Unterborn, Cayman T. (2023). "The Demographics of Terrestrial Planets in the Venus Zone". The Astronomical Journal. 165 (4): 168. arXiv:2302.03055. Bibcode:2023AJ....165..168O. doi:10.3847/1538-3881/acbfaf.

[brewer2018-6] 1 2 3 4 5 Brewer, John M.; Fischer, Debra A. (2018). "Spectral Properties of Cool Stars: Extended Abundance Analysis of Kepler Objects of Interest". The Astrophysical Journal Supplement Series. 237 (2): 38. arXiv:1804.00673. Bibcode:2018ApJS..237...38B. doi:10.3847/1538-4365/aad501. S2CID 119431797.

[zink2023-7] Zink, Jon K.; Hardegree-Ullman, Kevin K.; Christiansen, Jessie L.; Petigura, Erik A.; Boley, Kiersten M.; Bhure, Sakhee; Rice, Malena; Yee, Samuel W.; Isaacson, Howard; Fernandes, Rachel B.; Howard, Andrew W.; Blunt, Sarah; Lubin, Jack; Chontos, Ashley; Pidhorodetska, Daria; MacDougall, Mason G. (2023). "Scaling K2. VI. Reduced Small-planet Occurrence in High-galactic-amplitude Stars". The Astronomical Journal. 165 (6): 262. arXiv:2305.13389. Bibcode:2023AJ....165..262Z. doi:10.3847/1538-3881/acd24c.

[SIMBAD-8] "K2-58". SIMBAD. Centre de données astronomiques de Strasbourg.

[9] Kruse, Ethan; Agol, Eric; Luger, Rodrigo; Foreman-Mackey, Daniel (2019), "Detection of Hundreds of New Planet Candidates and Eclipsing Binaries in K2 Campaigns 0–8", The Astrophysical Journal Supplement Series, 244 (1): 11, arXiv:1907.10806, Bibcode:2019ApJS..244...11K, doi:10.3847/1538-4365/ab346b, S2CID 198901606

[10] "Exoplanet-catalog". Exoplanet Exploration: Planets Beyond our Solar System. Retrieved 2019-07-16.

[11] "EPIC 206026904". www.cfa.harvard.edu. Retrieved 2019-07-16.

[12] "Open Exoplanet Catalogue - K2-58 b". www.openexoplanetcatalogue.com. Retrieved 2019-07-16.

[Crossfield2016-13] 1 2 Crossfield, Ian J. M.; et al. (2016). "197 Candidates and 104 Validated Planets in K2's First Five Fields". The Astrophysical Journal Supplement Series. 226 (1): 7. arXiv:1607.05263. Bibcode:2016ApJS..226....7C. doi:10.3847/0067-0049/226/1/7.