K2-58

K2-58
Observation data; Equinox J2000.0]] (ICRS)
Constellation	Aquarius
Right ascension	22h 15m 17.2364s
Declination	−14° 02′ 59.3151″
Apparent magnitude (V)	12.13
Characteristics
Evolutionary stage	Main sequence
Spectral type	K2
Astrometry
Radial velocity (Rv)	6.5±0.8 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☉
Surface gravity (log g)	4.5 cgs
Temperature	5038 K
Metallicity [Fe/H]	0.25 dex
Rotational velocity (v sin i)	2.2±0.5 km/s
Other designations
	EPIC 206026904, 2MASS J22151722-1402593, Gaia DR2 2599975224481836672
Database references
SIMBAD	data

Short description: Star in the constellation Aquarius

Coordinates: 22^h 15^m 17.2364^s, −14° 02′ 59.3151″

K2-58 (also designated as EPIC 206026904) is G-type main-sequence star in the constellation of Aquarius, approximately 596 light-years from Solar System. The star is metal-rich, having 155% of Solar abundance of elements heavier than helium.^[3] The star is located in the region allowing to see Venus transiting the Sun for hypothetical observer located in K2-58 system.^[5]

Planetary system

The planetary system has three confirmed exoplanets (named as K2-58 b, K2-58 c, K2-58 d),^[6]^[7]^[8] discovered in 2016.^[9]

The K2-58 planetary system^[9]^[4]
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
K2-58c	—	0.0350	2.53726	—	86.1+2.8−7.3°	1.62 R_⊕
K2-58b	—	0.0692	7.05254	—	88.9+0.8−1.6°	2.68 R_⊕
K2-58d	—	0.1517	22.8827	—	89.43+0.41−0.81°	1.71 R_⊕

References

↑ ^1.0 ^1.1 "K2-58". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=K2-58.
↑ ^2.0 ^2.1 Brown, A. G. A. (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics 649: A1. doi:10.1051/0004-6361/202039657. Bibcode: 2021A&A...649A...1G. Gaia EDR3 record for this source at VizieR.
↑ ^3.0 ^3.1 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, doi:10.3847/1538-4365/aad501, Bibcode: 2018ApJS..237...38B
↑ ^4.0 ^4.1 ^4.2 Mayo, Andrew W.; Vanderburg, Andrew; Latham, David W.; Bieryla, Allyson; Morton, Timothy D.; Buchhave, Lars A.; Dressing, Courtney D.; Beichman, Charles et al. (2018), "275 Candidates and 149 Validated Planets Orbiting Bright Stars inK2 Campaigns 0–10", The Astronomical Journal 155 (3): 136, doi:10.3847/1538-3881/aaadff, Bibcode: 2018AJ....155..136M
↑ 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, doi:10.3847/1538-4365/ab346b, Bibcode: 2019ApJS..244...11K
↑ "Exoplanet-catalog". https://exoplanets.nasa.gov/exoplanet-catalog/3323/k2-58-c/.
↑ "EPIC 206026904". https://www.cfa.harvard.edu/~avanderb/k2c3/ep206026904.html.
↑ "Open Exoplanet Catalogue - K2-58 b". http://www.openexoplanetcatalogue.com/planet/K2-58 b/.
↑ ^9.0 ^9.1 Crossfield, Ian J. M. et al. (2021), "197 CANDIDATES AND 104 VALIDATED PLANETS IN K2 's FIRST FIVE FIELDS", The Astrophysical Journal Supplement Series 226: 7, doi:10.3847/0067-0049/226/1/7

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Original source: https://en.wikipedia.org/wiki/K2-58. Read more

[SIMBAD-1] 1.0 ^1.1 "K2-58". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=K2-58.

[EDR3-2] 2.0 ^2.1 Brown, A. G. A. (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics 649: A1. doi:10.1051/0004-6361/202039657. Bibcode: 2021A&A...649A...1G. Gaia EDR3 record for this source at VizieR.

[Brewer2018-3] 3.0 ^3.1 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, doi:10.3847/1538-4365/aad501, Bibcode: 2018ApJS..237...38B

[Mayo2018-4] 4.0 ^4.1 ^4.2 Mayo, Andrew W.; Vanderburg, Andrew; Latham, David W.; Bieryla, Allyson; Morton, Timothy D.; Buchhave, Lars A.; Dressing, Courtney D.; Beichman, Charles et al. (2018), "275 Candidates and 149 Validated Planets Orbiting Bright Stars inK2 Campaigns 0–10", The Astronomical Journal 155 (3): 136, doi:10.3847/1538-3881/aaadff, Bibcode: 2018AJ....155..136M

[5] 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, doi:10.3847/1538-4365/ab346b, Bibcode: 2019ApJS..244...11K

[6] "Exoplanet-catalog". https://exoplanets.nasa.gov/exoplanet-catalog/3323/k2-58-c/.

[7] "EPIC 206026904". https://www.cfa.harvard.edu/~avanderb/k2c3/ep206026904.html.

[8] "Open Exoplanet Catalogue - K2-58 b". http://www.openexoplanetcatalogue.com/planet/K2-58 b/.

[Crossfield2016-9] 9.0 ^9.1 Crossfield, Ian J. M. et al. (2021), "197 CANDIDATES AND 104 VALIDATED PLANETS IN K2 's FIRST FIVE FIELDS", The Astrophysical Journal Supplement Series 226: 7, doi:10.3847/0067-0049/226/1/7