TEPCat: HAT-P-70

This page summarises the information held within TEPCat for the transiting planetary system HAT-P-70. Please see here for descriptions of the quantities given below.

Discovery and basic observable quantities:
Quantity	Value	Unit
Reference of discovery paper	2019AJ....158..141Z
Date of discovery paper	2019 / 6 / 4	y / m / d
Data/telescope used for discovery	HAT
Right ascension	04 58 12.56	h m s
Declination	+09 59 52.7	d m s
Right ascension (decimal)	74.55233	degrees
Declination (decimal)	9.99797	degrees
V-band apparent magnitude	9.47	mag
K-band apparent magnitude	8.96	mag
Transit duration	0.1450 ( 3.480 )	day hour
Transit depth	1.0	%
Time of mid-transit	2458439.57519 ± 0.00041	HJD or BJD
Orbital period	2.74432452 ± 0.00000073	days
Reference for orbital ephemeris	2019AJ....158..141Z

Physical properties from the most recent detailed study:
Quantity	Value	Unit
Stellar effective temperature	8450 ± 195	K
Stellar metal abundance ([Fe/H] or [M/H])	−0.29 ± 0.15	dex
Stellar mass	1.890 +0.010 −0.013	Msun
Stellar radius	1.858 +0.119 −0.091	Rsun
Stellar logarithmic surface gravity	4.181 +0.055 −0.063	c.g.s.
Stellar mean density		ρsun g cm^-3
Orbital eccentricity	0.0
Orbital semimajor axis	0.04739 +0.00031 −0.00106	AU
Planetary mass	0.0 +6.78 −0.0 ( 0 +2155 −0 )	Mjup Mearth
Planetary radius	1.87 +0.15 −0.10 ( 21.0 + 1.7 − 1.1 )	Rjup Rearth
Planetary surface gravity	0.0 +53.7 −0.0 0000000000000000000000000000000000000000000000000 +0000000000000000000000000000000000000000000000000 −**0000000000000000000000000000000000000000000000000	m/s2 log(cgs)
Planetary mean density	0.0 +1.16 −0.0 ( 0.0 +1.5 −0.0 )	ρjup g cm^-3
Planetary equilibrium temperature	2562 +43 −52	K
Reference of detailed study	2019AJ....158..141Z

Entries in the catalogue of orbital obliquity measurements:
Reference	λ (degrees)
Zhou et al. (2019)	113.1 + 5.1 - 3.4
Bello-Arufe et al. (2022)	107.9 + 2.0 - 1.7

Page generated on 2025/11/11 John Southworth (Keele University, UK)