WASP-58

High proper motion star in the constellation Lyra

WASP-58  Observation data
Epoch J2000      Equinox J2000

Constellation | Lyra[1]
Right ascension | 18h 18m 48.25296s[2]
Declination | +45° 10′ 19.2603″[2]
Apparent magnitude (V) | 11.66[3]
Characteristics
Evolutionary stage | Main sequence
Spectral type | G2V[3]
Astrometry
Radial velocity (Rv)| −28.42±0.71[2] km/s
Proper motion (μ)|  RA: 32.658 mas/yr[2]
Dec.: 47.057 mas/yr[2]
Parallax (π)| 3.3963±0.0112 mas[2]
Distance| 960 ± 3 ly
(294.4 ± 1.0 pc)
Orbit[4]
Primary| WASP-58A
Companion| WASP-58B
Semi-major axis (a)| 1.281±0.002"
(384±64 AU)
Details[5]
WASP-58A
Mass| 0.940±0.100 M☉
Radius| 1.17±0.13 R☉
Surface gravity (log g)| 4.23±0.1[6] cgs
Temperature| 6039±55[6] K
Metallicity [Fe/H]| -0.09±0.04 dex
Rotation| 22.6+11.7
−6.1 d[7]
Rotational velocity (v sin i)| 2.8±0.9 km/s
Age| 12.80+0.20
−2.10 Gyr
WASP-58B
Temperature| 3396±53[4] K
Other designations
TOI-1627, TIC 424435940, WASP-58, TYC 3525-76-1, 2MASS J18184825+4510192[8]
Database references
SIMBAD| data
Exoplanet Archive| data

WASP-58 is a binary star system in the constellation Lyra. It comprises a G-type main-sequence star and a red dwarf at a separation of 384 astronomical units. WASP-58 is slightly depleted in heavy elements, having 80% of the solar abundance of iron. The system is much older than the Sun at 12.80+0.20
−2.10 billion years. Based on parallax measurements, it lies at a distance of 960 light-years (290 parsecs).

Lithium was detected in the stellar spectrum of WASP-58A, making the star anomalous for its advanced age.[3]

A multiplicity survey in 2015 detected a red dwarf stellar companion[9] at a projected separation of 1.281±0.002″ to WASP-58A, and it was confirmed to be gravitationally bound in 2016.[4]

## Planetary system

[edit]

In 2012 a transiting hot Jupiter planet, WASP-58b, was detected on a tight, circular orbit around the primary star WASP-58A.[3] The planetary equilibrium temperature is 1270±80 K.[3]

The WASP-58 planetary system[5] Companion
(in order from star) | Mass | Semimajor axis
(AU) | Orbital period
(days) | Eccentricity | Inclination | Radius

|
|
|
|
|
|

b | 0.899+0.074
−0.072 MJ | 0.0562+0.0019
−0.0020 | 5.017180±0.000011  | <0.044  | 87.4±1.5° | 1.37±0.2 RJ

## References

[edit]

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.
2. ^ a b c d e 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.
3. ^ a b c d e Hébrard, G.; et al. (2012), "WASP-52b, WASP-58b, WASP-59b, and WASP-60b: Four new transiting close-in giant planets", Astronomy & Astrophysics, 549: A134, arXiv:1211.0810, doi:10.1051/0004-6361/201220363, S2CID 54502046
4. ^ a b c Ngo, Henry; Knutson, Heather A.; Hinkley, Sasha; Bryan, Marta; Crepp, Justin R.; Batygin, Konstantin; Crossfield, Ian; Hansen, Brad; Howard, Andrew W.; Johnson, John A.; Mawet, Dimitri; Morton, Timothy D.; Muirhead, Philip S.; Wang, Ji (2016), "FRIENDS OF HOT JUPITERS. IV. STELLAR COMPANIONS BEYOND 50 au MIGHT FACILITATE GIANT PLANET FORMATION, BUT MOST ARE UNLIKELY TO CAUSE KOZAI–LIDOV MIGRATION", The Astrophysical Journal, 827 (1): 8, arXiv:1606.07102, Bibcode:2016ApJ...827....8N, doi:10.3847/0004-637X/827/1/8, S2CID 41083068
5. ^ a b Bonomo, A. S.; et al. (2017), "The GAPS Programme with HARPS-N@TNG XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets", Astronomy & Astrophysics, 602: A107, arXiv:1704.00373, Bibcode:2017A&A...602A.107B, doi:10.1051/0004-6361/201629882, S2CID 118923163
6. ^ a b Andreasen, D. T.; Sousa, S. G.; Tsantaki, M.; Teixeira, G. D. C.; Mortier, A.; Santos, N. C.; Suárez-Andrés, L.; Delgado-Mena, E.; Ferreira, A. C. S. (2017), "SWEET-Cat update and FASMA", Astronomy & Astrophysics, 600: A69, arXiv:1703.06671, Bibcode:2017A&A...600A..69A, doi:10.1051/0004-6361/201629967, S2CID 119534579
7. ^ Brown, D. J. A. (2014), "Discrepancies between isochrone fitting and gyrochronology for exoplanet host stars?", Monthly Notices of the Royal Astronomical Society, 442 (2): 1844–1862, arXiv:1406.4402, Bibcode:2014MNRAS.442.1844B, doi:10.1093/mnras/stu950
8. ^ "WASP-58". SIMBAD. Centre de données astronomiques de Strasbourg.
9. ^ Wöllert, Maria; Brandner, Wolfgang; Bergfors, Carolina; Henning, Thomas (2015), "A Lucky Imaging search for stellar companions to transiting planet host stars", Astronomy & Astrophysics, 575: A23, arXiv:1507.01938, Bibcode:2015A&A...575A..23W, doi:10.1051/0004-6361/201424091, S2CID 119250579

* v
* t
* e

Constellation of Lyra

* List of stars in Lyra
* Lyra in Chinese astronomy

Stars|

| Bayer|

* α (Vega)
* β (Sheliak)
* γ (Sulafat)
* δ1
* δ2
* ε1
* ε2
* ζ1
* ζ2
* η (Aladfar)
* θ
* ι
* κ
* λ
* μ (Alathfar)
* ν1
* ν2

|

Flamsteed|

* 16
* 17
* 19

Variable|

* R (13)
* RR
* DM
* FL
* HP
* HR
* V473
* V672

HR|

* 6845
* 6847
* 6968
* 6997
* 7043 (Xihe)
* 7044
* 7064
* 7073
* 7081
* 7112
* 7132
* 7146
* 7162
* 7181
* 7202
* 7237
* 7238
* 7302

HD|

* 177830
* 179070
* 180314
* 181068

Kepler|

* 7
* 8
* 9
* 13
* 14
* 19
* 20
* 24
* 25
* 26
* 30
* 37
* 38
* 43
* 46
* 60
* 62
* 65
* 88
* 92
* 93
* 100
* 102
* 104
* 105
* 130
* 138
* 160
* 174
* 238
* 277
* 279
* 282
* 350
* 410
* 421
* 429
* 444
* 635
* 705
* 725
* 1513

Other|

* Gliese 758
* HAT-P-5 (Chasoň)
* KSw 71
* LHS 6343
* LSR J1835+3259
* WASP-3
* WASP-58
* WISE 1828+2650
* WISEP J190648.47+401106.8

Exoplanets|

| Kepler|

* 7b
* 8b
* 9b
* c
* d
* 14b
* 20b
* c
* d
* e
* f
* 24b
* c
* d
* e
* 25b
* c
* 26e
* 37b
* c
* d
* 59b
* 60d
* 62b
* c
* d
* e
* f
* 91b
* 93b
* 277b
* c
* 438b
* 440b
* 442b
* 453b

|

Other|

* HAT-P-5b (Kráľomoc)
* HD 173416 b (Wangshu)
* HD 178911 Bb
* TrES-1b

Star clusters|

* δ Lyrae cluster
* Messier 56
* NGC 6791

Nebulae|

* Ring Nebula

Galaxies|

| NGC|

* 6646
* 6672
* 6685
* 6745

|

Other|

* 3C 382
* 3C 395
* IC 1296

This main-sequence-star-related article is a stub. You can help Wikipedia by expanding it.

|

* v
* t
* e

This extrasolar-planet-related article is a stub. You can help Wikipedia by expanding it.

|

* v
* t
* e

*[RA:]: Right Ascension
*[Dec.:]: Declination
*[v]: View this template
*[t]: Discuss this template
*[e]: Edit this template