WASP-55

WASP-55
Observation data; Equinox J2000.0]] (ICRS)
Constellation	Virgo
Right ascension	13h 35m 01.9538s
Declination	−17° 30′ 12.5263″
Apparent magnitude (V)	11.75
Characteristics
Evolutionary stage	Main sequence[citation needed]
Spectral type	G1
Astrometry
Radial velocity (Rv)	-4.09 km/s
Proper motion (μ)	RA: 12.072 mas/yr ; Dec.: −3.837 mas/yr
Parallax (π)	3.3337 ± 0.0438 mas
Distance	980 ± 10 ly ; (300 ± 4 pc)
Details
Mass	1.04±0.05 M☉
Radius	1.11+0.13; −0.09 R☉
Surface gravity (log g)	4.34 cgs
Temperature	5,965 K
Metallicity [Fe/H]	0.00 dex
Rotational velocity (v sin i)	2.7 km/s
Age	1.1+0.8; −0.6 Gyr
Other designations
	Gaia DR2 3603529272750802560, EPIC 212300977, TYC 6125-113-1, 2MASS J13350194-1730124
Database references
SIMBAD	data

Short description: Star in constellation of Virgo

WASP-55 is a G-type main-sequence star about 980 light-years away. The star is much younger than the Sun at approximately 1.1+0.8
−0.6 billion years.^[3] WASP-55 is similar to the Sun in concentration of heavy elements.^[2]

A multiplicity survey in 2016 found one candidate stellar companion to WASP-55 at a projected separation of 4.435″±0.018″.^[5] Follow-up observations in 2017 were unable to confirm if the suspected companion red dwarf star, with a temperature of 3,340±90 K, is gravitationally bound to WASP-55 or not.^[6]

Planetary system

In 2012 a transiting hot Jupiter planet b was detected on a tight, circular orbit.^[7] Its equilibrium temperature is 1,305 K.^[8]

The WASP-55 planetary system^[9]
Companion (in order from star)	Mass	Semimajor axis (AU)	Orbital period (days)	Eccentricity	Inclination	Radius
b	0.62±0.04 M_J	0.0558±0.0006^[8]	4.4656291	<0.1	89.0±0.2^[8]°	1.34±0.01^[8] R_J

References

↑ ^1.0 ^1.1 ^1.2 ^1.3 ^1.4 ^1.5 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.
↑ ^2.0 ^2.1 Petigura, Erik A.; Crossfield, Ian J. M.; Isaacson, Howard; Beichman, Charles A.; Christiansen, Jessie L.; Dressing, Courtney D.; Fulton, Benjamin J.; Howard, Andrew W. et al. (2017), "PLANET CANDIDATES FROM K2 CAMPAIGNS 5–8 AND FOLLOW-UP OPTICAL SPECTROSCOPY", The Astronomical Journal 155: 21, doi:10.3847/1538-3881/aa9b83
↑ ^3.0 ^3.1 Southworth, John; Tregloan-Reed, J.; Andersen, M. I.; Calchi Novati, S.; Ciceri, S.; Colque, J. P.; D'Ago, G.; Dominik, M. et al. (2015), High-precision photometry by telescope defocussing. VIII. WASP-22, WASP-41, WASP-42 and WASP-55, doi:10.1093/mnras/stw279
↑ "WASP-55". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=WASP-55.
↑ Evans, D. F.; Southworth, J.; Maxted, P. F. L.; Skottfelt, J.; Hundertmark, M.; Jørgensen, U. G.; Dominik, M.; Alsubai, K. A. et al. (2016), "High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP). I. Lucky imaging observations of 101 systems in the southern hemisphere", Astronomy & Astrophysics 589: A58, doi:10.1051/0004-6361/201527970, Bibcode: 2016A&A...589A..58E
↑ Evans, D. F.; Southworth, J.; Smalley, B.; Jørgensen, U. G.; Dominik, M.; Andersen, M. I.; Bozza, V.; Bramich, D. M. et al. (2018), "High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP). II. Lucky Imaging results from 2015 and 2016", Astronomy & Astrophysics 610: A20, doi:10.1051/0004-6361/201731855, Bibcode: 2018A&A...610A..20E
↑ Hellier, Coel; Anderson, D. R.; Collier Cameron, A.; Doyle, A. P.; Fumel, A.; Gillon, M.; Jehin, E.; Lendl, M. et al. (2012), "Seven transiting hot-Jupiters from WASP-South, Euler and TRAPPIST: WASP-47b, WASP-55b, WASP-61b, WASP-62b, WASP-63b, WASP-66b & WASP-67b", Monthly Notices of the Royal Astronomical Society 426 (1): 739–750, doi:10.1111/j.1365-2966.2012.21780.x, Bibcode: 2012MNRAS.426..739H
↑ ^8.0 ^8.1 ^8.2 ^8.3 Clark, B. J. M.; Anderson, D. R.; Hellier, C.; Turner, O. D.; Močnik, T. (2018), "An analysis of transiting hot Jupiters observed with K2: WASP-55b and WASP-75b", Publications of the Astronomical Society of the Pacific 130 (985): 034401, doi:10.1088/1538-3873/aaa33e, Bibcode: 2018PASP..130c4401C
↑ Sandford, Emily; Espinoza, Néstor; Brahm, Rafael; Jordán, Andrés (2019), "Estimation of singly-transiting K2 planet periods with Gaia parallaxess", Monthly Notices of the Royal Astronomical Society 489 (3): 3149–3161, doi:10.1093/mnras/stz2348, Bibcode: 2019MNRAS.489.3149S

Coordinates: 13^h 35^m 01.9538^s, −17° 30′ 12.5263″

0.00

(0 votes)

Original source: https://en.wikipedia.org/wiki/WASP-55. Read more

[dr2-1] 1.0 ^1.1 ^1.2 ^1.3 ^1.4 ^1.5 Brown, A. G. A. (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics 616: A1. doi:10.1051/0004-6361/201833051. Bibcode: 2018A&A...616A...1G. Gaia DR2 record for this source at VizieR.

[Petigura2017-2] 2.0 ^2.1 Petigura, Erik A.; Crossfield, Ian J. M.; Isaacson, Howard; Beichman, Charles A.; Christiansen, Jessie L.; Dressing, Courtney D.; Fulton, Benjamin J.; Howard, Andrew W. et al. (2017), "PLANET CANDIDATES FROM K2 CAMPAIGNS 5–8 AND FOLLOW-UP OPTICAL SPECTROSCOPY", The Astronomical Journal 155: 21, doi:10.3847/1538-3881/aa9b83

[Southworth2015-3] 3.0 ^3.1 Southworth, John; Tregloan-Reed, J.; Andersen, M. I.; Calchi Novati, S.; Ciceri, S.; Colque, J. P.; D'Ago, G.; Dominik, M. et al. (2015), High-precision photometry by telescope defocussing. VIII. WASP-22, WASP-41, WASP-42 and WASP-55, doi:10.1093/mnras/stw279

[simbad-4] "WASP-55". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=WASP-55.

[5] Evans, D. F.; Southworth, J.; Maxted, P. F. L.; Skottfelt, J.; Hundertmark, M.; Jørgensen, U. G.; Dominik, M.; Alsubai, K. A. et al. (2016), "High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP). I. Lucky imaging observations of 101 systems in the southern hemisphere", Astronomy & Astrophysics 589: A58, doi:10.1051/0004-6361/201527970, Bibcode: 2016A&A...589A..58E

[6] Evans, D. F.; Southworth, J.; Smalley, B.; Jørgensen, U. G.; Dominik, M.; Andersen, M. I.; Bozza, V.; Bramich, D. M. et al. (2018), "High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP). II. Lucky Imaging results from 2015 and 2016", Astronomy & Astrophysics 610: A20, doi:10.1051/0004-6361/201731855, Bibcode: 2018A&A...610A..20E

[Hellier2012-7] Hellier, Coel; Anderson, D. R.; Collier Cameron, A.; Doyle, A. P.; Fumel, A.; Gillon, M.; Jehin, E.; Lendl, M. et al. (2012), "Seven transiting hot-Jupiters from WASP-South, Euler and TRAPPIST: WASP-47b, WASP-55b, WASP-61b, WASP-62b, WASP-63b, WASP-66b & WASP-67b", Monthly Notices of the Royal Astronomical Society 426 (1): 739–750, doi:10.1111/j.1365-2966.2012.21780.x, Bibcode: 2012MNRAS.426..739H

[Clark2018-8] 8.0 ^8.1 ^8.2 ^8.3 Clark, B. J. M.; Anderson, D. R.; Hellier, C.; Turner, O. D.; Močnik, T. (2018), "An analysis of transiting hot Jupiters observed with K2: WASP-55b and WASP-75b", Publications of the Astronomical Society of the Pacific 130 (985): 034401, doi:10.1088/1538-3873/aaa33e, Bibcode: 2018PASP..130c4401C

[Sandford2019-9] Sandford, Emily; Espinoza, Néstor; Brahm, Rafael; Jordán, Andrés (2019), "Estimation of singly-transiting K2 planet periods with Gaia parallaxess", Monthly Notices of the Royal Astronomical Society 489 (3): 3149–3161, doi:10.1093/mnras/stz2348, Bibcode: 2019MNRAS.489.3149S

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

Observation data Equinox J2000.0]] (ICRS)
Constellation	Virgo
Right ascension	13^h 35^m 01.9538^s^[1]
Declination	−17° 30′ 12.5263″^[1]
Apparent magnitude (V)	11.75
Characteristics
Evolutionary stage	Main sequence^{[citation needed]}
Spectral type	G1
Astrometry

Radial velocity (R_v)	-4.09^[1] km/s
Proper motion (μ)	RA: 12.072^[1] mas/yr Dec.: −3.837^[1] mas/yr
Parallax (π)	3.3337 ± 0.0438^[1] mas
Distance	980 ± 10 ly (300 ± 4 pc)

Details^[2]

Mass	1.04±0.05 `M`_☉
Radius	1.11+0.13 −0.09 `R`_☉
Surface gravity (log g)	4.34 cgs
Temperature	5,965 K
Metallicity [Fe/H]	0.00 dex
Rotational velocity (v sin i)	2.7 km/s
Age	1.1+0.8 −0.6^[3] Gyr

Other designations
Gaia DR2 3603529272750802560, EPIC 212300977, TYC 6125-113-1, 2MASS J13350194-1730124^[4]
Database references
SIMBAD	data

WASP-55

Topic: Astronomy

Planetary system

References