K2-58

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.[1] The star is located in a region where a hypothetical observer in the K2-58 system can see Venus transiting the Sun.[2]

## Planetary system

The planetary system has three confirmed exoplanets, named K2-58 b, K2-58 c, and K2-58 d,[3][4][5] discovered in 2016.[6]

The K2-58 planetary system[6][7] 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

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.
2. ↑ 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
3. ↑ "Exoplanet-catalog". https://exoplanets.nasa.gov/exoplanet-catalog/3323/k2-58-c/.
4. ↑ "EPIC 206026904". https://www.cfa.harvard.edu/~avanderb/k2c3/ep206026904.html.
5. ↑ "Open Exoplanet Catalogue - K2-58 b". http://www.openexoplanetcatalogue.com/planet/K2-58 b/.
6. ↑ 6.0 6.1 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. doi:10.3847/0067-0049/226/1/7. Bibcode: 2016ApJS..226....7C.
7. ↑ 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

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* v
* t
* e

Constellation of Aquarius

* Aquarius in Chinese astronomy
* Aquarius Stream
* List of stars in Aquarius

Stars|

| Bayer|

* α
* β
* γ
* δ
* ε
* ζ
* η
* θ
* ι
* κ
* λ
* μ
* ν
* ξ
* ο
* π
* ρ
* σ
* τ1
* τ2
* υ
* φ
* χ
* ψ2
* ψ3
* ω1
* ω2

|

Flamsteed|

* 1
* 3
* 4
* 5
* 7
* 8
* 9
* 10
* 11
* 12
* 14
* 15
* 16
* 17
* 18
* 19
* 20
* 21
* 24
* 25
* 26
* 28
* 29
* 30
* 32
* 35
* 36
* 37
* 38
* 39
* 40
* 41
* 42
* 44
* 45
* 47
* 49
* 50
* 51
* 53
* 54
* 56
* 58
* 60
* 61
* 64
* 65
* 66
* 67
* 68
* 70
* 72
* 74
* 75
* 77
* 78
* 81
* 82
* 83
* 84
* 85
* 86
* 87
* 88
* 89
* 91
* 94
* 96
* 97
* 98
* 99
* 100
* 101
* 103
* 104
* 106
* 107
* 108

Variable|

* R
* U
* AE
* DV
* EW
* EZ
* FO
* HK
* HU
* IZ
* LP

HD|

* 199442
* 200375
* 202259
* 205765
* 208177
* 210277
* 210434
* 211392
* 211575
* 213429
* 214448
* 214810
* 215114
* 215152
* 216718
* 218061
* 219279
* 220035
* 220466
* 220689
* 220766
* 221148
* 222093
* 222582
* 223311

Other|

* 2MASS J21392676+0220226
* BD−22 5866
* Fomalhaut C
* Gliese 849
* Gliese 876
* K2-28
* K2-72
* K2-138
* LS IV-14 116
* Sneden's Star
* TRAPPIST-1
* WASP-6
* WASP-47

| Exoplanets|

* 91 Aquarii b
* Gliese 849 b
* Gliese 876 b
* c
* d
* e
* HD 206610 b
* HD 210277 b
* HD 212771 b
* HD 222582 b
* K2-21b
* c
* K2-72b
* c
* d
* e
* K2-138b
* TRAPPIST-1b
* c
* d
* e
* f
* g
* h
* WASP-6b

|

| Star clusters|

* Messier 2
* Messier 72
* Messier 73

|

| Nebulae|

* Helix
* Saturn

|

Galaxies|

| NGC|

* 6975
* 7001
* 7010
* 7047
* 7051
* 7065
* 7069
* 7077
* 7081
* 7184
* 7252
* 7257
* 7301
* 7302
* 7600
* 7606
* 7723
* 7727
* 7759

|

Other|

* Aquarius Dwarf
* Lyman-alpha blob 1
* SMM J2135-0102
* WISE J224607.57−052635.0

| Galaxy clusters|

* Abell 2597
* XMMXCS 2215-1738

|

| Astronomical events|

* SN 2213-1745

|

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