Registry · exoplanet

TrES-1 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: 19h 04m 09.81s
Declination: +36° 37′ 57.1″
Galactic l, b: 67.464, 13.44
Magnitude V: 11.42
Distance: 159.66 pc

Planet

NASA Exoplanet Archive, composite parameters

Host star	TrES-1 · K0 V
Discovery	Transit, 2004 · TrES
Orbital period	3.03007 d
Semi-major axis	0.03925 au
Eccentricity	0
Radius	12.666 R⊕ · 1.13 R♃
Mass	266.98 M⊕ · 0.84 M♃
Density	0.712 g/cm³
Equilibrium temperature	1,140 K
System distance	159.66 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 5 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
221.5275	M_earth	± 8.899	Transit	NASA Exoplanet Archive	Bonomo et al. 2017	2017
266.9772	M_earth	± 34.96	Transit	NASA Exoplanet Archive	Stassun et al. 2017	2017
241.8686	M_earth	± 16.21	Transit	NASA Exoplanet Archive	Southworth 2010	2010
238.998	M_earth	± 14.94	Transit	NASA Exoplanet Archive	Torres et al. 2008	2008
238.36	M_earth	± 22.25	Transit	NASA Exoplanet Archive	Alonso et al. 2004	2004

Radius 7 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
11.96	R_earth	± 0.2466	Transit	NASA Exoplanet Archive	Bonomo et al. 2017	2017
12.66617	R_earth	± 0.6725	Transit	NASA Exoplanet Archive	Stassun et al. 2017	2017
12.31869	R_earth	± 0.3923	Transit	NASA Exoplanet Archive	Southworth 2010	2010
11.96	R_earth	± 0.247	Transit	NASA Exoplanet Archive	Torres et al. 2008	2008
12.117	R_earth	± 0.325	Transit	NASA Exoplanet Archive	Winn et al. 2007	2007
12.11	R_earth	± 2.02	Transit	NASA Exoplanet Archive	Alonso et al. 2004	2004
12.75299	R_earth	± 0.6813	Transit	NASA Exoplanet Archive	ExoFOP	2004

Orbital period 14 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
3.030069	d	± 7.20e-08	Transit	NASA Exoplanet Archive	Kokori et al. 2023	2023
3.03007	d	± 1.00e-07	Transit	NASA Exoplanet Archive	Kokori et al. 2022	2022
3.03007	d	± 1.40e-07	Transit	NASA Exoplanet Archive	Ivshina & Winn 2022	2022
3.03007	d	± 1.80e-07	Transit	NASA Exoplanet Archive	Bonomo et al. 2017	2017
3.03007	d	± 8.00e-06	Transit	NASA Exoplanet Archive	Stassun et al. 2017	2017
3.03007	d	± 1.80e-07	Transit	NASA Exoplanet Archive	Baluev et al. 2015	2015
3.030073	d	± 6.00e-07	Transit	NASA Exoplanet Archive	Southworth 2010	2010
3.030073	d	± 6.00e-07	Transit	NASA Exoplanet Archive	Rabus et al. 2009	2009
3.030072	d	± 2.00e-07	Transit	NASA Exoplanet Archive	Raetz et al. 2009	2009
3.030065	d		Transit	NASA Exoplanet Archive	Torres et al. 2008	2008
3.030074	d	± 1.30e-06	Transit	NASA Exoplanet Archive	Winn et al. 2007	2007
3.030074	d		Transit	NASA Exoplanet Archive	Narita et al. 2007	2007

Show the remaining 2

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
3.030065	d	± 8.00e-06	Transit	NASA Exoplanet Archive	Alonso et al. 2004	2004
3.030071	d	± 4.80e-07	Transit	NASA Exoplanet Archive	ExoFOP	2004

Semi-major axis 4 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
0.03926	au	± 0.00058	Transit	NASA Exoplanet Archive	Bonomo et al. 2017	2017
0.03946	au	± 0.00072	Transit	NASA Exoplanet Archive	Southworth 2010	2010
0.03925	au	± 0.00056	Transit	NASA Exoplanet Archive	Torres et al. 2008	2008
0.0393	au	± 0.0011	Transit	NASA Exoplanet Archive	Alonso et al. 2004	2004

Eccentricity 3 values

Value	Band / method	Source	Reference	Year
0.012	Transit	NASA Exoplanet Archive	Bonomo et al. 2017	2017
0	Transit	NASA Exoplanet Archive	Stassun et al. 2017	2017
0	Transit	NASA Exoplanet Archive	Narita et al. 2007	2007

Equilibrium temperature 3 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
1,147	K	± 15	Transit	NASA Exoplanet Archive	Southworth 2010	2010
1,140	K	± 13	Transit	NASA Exoplanet Archive	Torres et al. 2008	2008
1,077.41	K		Transit	NASA Exoplanet Archive	ExoFOP	2004

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
TrES-1	Star	0″	—
TOI-1236	Star	0.5911″	11.42
TOI-1236b	Planet	0.5911″	—
V* V674 Lyr	EclBin	258.5″	15.5
V* V673 Lyr	EclBin	439.7″	—
ATO J285.9973+36.5005	EclBin	491.2″	—

Provenance

where this card came from

Archive	Read at (UTC)	Record
Seeded from the bulk archive load; no per-object fetch yet.

Machine-readable: /api/v1/object/tres-1-b · Registry entry updated 2026-08-14.