UPSA Object Registry
Registry · exoplanet

WASP-77 A b

Exoplanet
harvesting The full record is being pulled from the archives right now — measurement tables, the Gaia row, catalogue photometry. This page will fill itself in.
Right ascension
02h 28m 37.33s
Declination
−07° 03′ 38.4″
Galactic l, b
176.35, -59.44
Magnitude V
10.29
Distance
105.17 pc

Planet

NASA Exoplanet Archive, composite parameters
Host starWASP-77 A · G8 V
DiscoveryTransit, 2012 · SuperWASP
Orbital period1.36003 d
Semi-major axis0.023234 au
Eccentricity0.01353
Radius13.56 R⊕ · 1.21 R♃
Mass529.31 M⊕ · 1.665 M♃
Density1.33 g/cm³
Equilibrium temperature1,674 K
System distance105.17 pc

Published measurements

6 quantities measured more than once
One object can carry a dozen published estimates of the same quantity. The register keeps them side by side rather than picking a winner — the citation is part of the value.

Mass 7 values

ValueUnitUncertainty Band / methodSourceReferenceYear
529.3114 M_earth ± 0.143 Transit NASA Exoplanet Archive Noguer et al. 2024 2024
529.82 M_earth ± 21.61 Transit NASA Exoplanet Archive Cortés-Zuleta et al. 2020 2020
727.8307 M_earth ± 104.9 Transit NASA Exoplanet Archive Stassun et al. 2017 2017
560.3343 M_earth ± 17.48 Transit NASA Exoplanet Archive Bonomo et al. 2017 2017
559.3808 M_earth ± 18.12 Transit NASA Exoplanet Archive Turner et al. 2016 2016
572.1 M_earth Transit NASA Exoplanet Archive Salz et al. 2015 2015
559.36 M_earth ± 19.07 Transit NASA Exoplanet Archive Maxted et al. 2013 2013

Radius 7 values

ValueUnitUncertainty Band / methodSourceReferenceYear
13.78705 R_earth ± 0.3475 Transit NASA Exoplanet Archive Cortés-Zuleta et al. 2020 2020
15.46842 R_earth ± 1.009 Transit NASA Exoplanet Archive Stassun et al. 2017 2017
13.56289 R_earth ± 0.2242 Transit NASA Exoplanet Archive Bonomo et al. 2017 2017
13.56289 R_earth ± 0.2242 Transit NASA Exoplanet Archive Turner et al. 2016 2016
13.5 R_earth Transit NASA Exoplanet Archive Salz et al. 2015 2015
13.56 R_earth ± 0.22 Transit NASA Exoplanet Archive Maxted et al. 2013 2013
13.09118 R_earth ± 0.6023 Transit NASA Exoplanet Archive ExoFOP 2012

Orbital period 12 values

ValueUnitUncertainty Band / methodSourceReferenceYear
1.360029 d ± 5.70e-08 Transit NASA Exoplanet Archive Noguer et al. 2024 2024
1.360029 d ± 5.00e-08 Transit NASA Exoplanet Archive Yalçınkaya et al. 2024 2024
1.360029 d ± 7.50e-08 Transit NASA Exoplanet Archive Kokori et al. 2023 2023
1.360029 d ± 1.60e-07 Transit NASA Exoplanet Archive Ivshina & Winn 2022 2022
1.360029 d ± 1.30e-07 Transit NASA Exoplanet Archive Kokori et al. 2022 2022
1.360029 d ± 6.20e-07 Transit NASA Exoplanet Archive Cortés-Zuleta et al. 2020 2020
1.36003 d ± 2.00e-06 Transit NASA Exoplanet Archive Stassun et al. 2017 2017
1.360031 d ± 2.00e-06 Transit NASA Exoplanet Archive Bonomo et al. 2017 2017
1.360031 d ± 1.20e-06 Transit NASA Exoplanet Archive Turner et al. 2016 2016
1.4 d Transit NASA Exoplanet Archive Salz et al. 2015 2015
1.360031 d ± 2.00e-06 Transit NASA Exoplanet Archive Maxted et al. 2013 2013
1.360028 d ± 2.08e-07 Transit NASA Exoplanet Archive ExoFOP 2012

Semi-major axis 6 values

ValueUnitUncertainty Band / methodSourceReferenceYear
0.02323363 au ± 3.70e-08 Transit NASA Exoplanet Archive Noguer et al. 2024 2024
0.02335 au ± 0.00045 Transit NASA Exoplanet Archive Cortés-Zuleta et al. 2020 2020
0.02405 au ± 0.00036 Transit NASA Exoplanet Archive Bonomo et al. 2017 2017
0.02396 au ± 0.00043 Transit NASA Exoplanet Archive Turner et al. 2016 2016
0.024 au Transit NASA Exoplanet Archive Salz et al. 2015 2015
0.024 au ± 0.00036 Transit NASA Exoplanet Archive Maxted et al. 2013 2013

Eccentricity 7 values

ValueUnitUncertainty Band / methodSourceReferenceYear
0.01353 ± 0.0006 Transit NASA Exoplanet Archive Noguer et al. 2024 2024
0.0074 ± 0.0069 Transit NASA Exoplanet Archive Cortés-Zuleta et al. 2020 2020
0 Transit NASA Exoplanet Archive Stassun et al. 2017 2017
0.0075 Transit NASA Exoplanet Archive Bonomo et al. 2017 2017
0 Transit NASA Exoplanet Archive Turner et al. 2016 2016
0 Transit NASA Exoplanet Archive Salz et al. 2015 2015
0 Transit NASA Exoplanet Archive Maxted et al. 2013 2013

Equilibrium temperature 4 values

ValueUnitUncertainty Band / methodSourceReferenceYear
1,715 K ± 26 Transit NASA Exoplanet Archive Cortés-Zuleta et al. 2020 2020
1,674 K ± 24 Transit NASA Exoplanet Archive Turner et al. 2016 2016
1,650 K Transit NASA Exoplanet Archive Salz et al. 2015 2015
1,544.01 K Transit NASA Exoplanet Archive ExoFOP 2012

In the same field

within 9 arcmin · wider search
ObjectTypeSeparationV
WASP-77 A Star 0″ —
BD-07 436A HighPM* 1.453″ 10.29
BD-07 436Ab Planet 1.453″ —
BD-07 436 ** 1.479″ 10.12
BD-07 436B HighPM* 2.881″ 13.4
SDSS J022821.13-070336.4 QSO 241.1″ —
SDSS J022850.98-070829.6 QSO 355.1″ —

Provenance

where this card came from
ArchiveRead at (UTC)Record
Seeded from the bulk archive load; no per-object fetch yet.

Machine-readable: /api/v1/object/wasp-77-a-b · Registry entry updated 2026-08-14.