Registry · exoplanet

Kepler-78 b

Exoplanet 154 papers

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 34m 58.07s
Declination: +44° 26′ 53.7″
Galactic l, b: 77.255, 11.5
Magnitude V: 11.72
Distance: 124.38 pc

Also known as

1 identifiers

Kepler-78b

Planet

NASA Exoplanet Archive, composite parameters

Host star	Kepler-78 · K2.5V
Discovery	Transit, 2013 · Kepler
Orbital period	0.355007 d
Semi-major axis	0.00901 au
Eccentricity	0
Radius	1.201 R⊕ · 0.1071 R♃
Mass	1.68 M⊕ · 0.005286 M♃
Density	5.33 g/cm³
Equilibrium temperature	2,223 K
System distance	124.38 pc

Recorded parameters

1 quantity with a single published value

Parameter	Value	Unit	Uncertainty	As published	Source	Reference
Semi-major axis	0.00901	au	± 0.00012	Transit	NASA Exoplanet Archive	Bonomo et al. 2023

Published measurements

5 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

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
1.68	M_earth	± 0.27	Transit	NASA Exoplanet Archive	Bonomo et al. 2023	2023
1.77	M_earth	± 0.24	Transit	NASA Exoplanet Archive	Dai et al. 2019	2019
1.967161	M_earth	± 0.5345	Transit	NASA Exoplanet Archive	Stassun et al. 2017	2017
1.87	M_earth	± 0.27	Transit	NASA Exoplanet Archive	Grunblatt et al. 2015	2015
1.86	M_earth	± 0.38	Transit	NASA Exoplanet Archive	Pepe et al. 2013	2013
1.69	M_earth	± 0.41	Transit	NASA Exoplanet Archive	Howard et al. 2013	2013
8	M_earth		Transit	NASA Exoplanet Archive	Sanchis-Ojeda et al. 2013	2013

Radius 7 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
1.201	R_earth	± 0.028	Transit	NASA Exoplanet Archive	Bonomo et al. 2023	2023
1.228	R_earth	± 0.018	Transit	NASA Exoplanet Archive	Dai et al. 2019	2019
1.1209	R_earth	± 0.1121	Transit	NASA Exoplanet Archive	Stassun et al. 2017	2017
1.2	R_earth	± 0.09	Transit	NASA Exoplanet Archive	Grunblatt et al. 2015	2015
1.173	R_earth	± 0.159	Transit	NASA Exoplanet Archive	Pepe et al. 2013	2013
1.2	R_earth	± 0.09	Transit	NASA Exoplanet Archive	Howard et al. 2013	2013
1.16	R_earth	± 0.19	Transit	NASA Exoplanet Archive	Sanchis-Ojeda et al. 2013	2013

Orbital period 8 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
0.3550075	d	± 8.00e-08	Transit	NASA Exoplanet Archive	Bonomo et al. 2023	2023
0.355	d		Transit	NASA Exoplanet Archive	Dai et al. 2019	2019
0.3550074	d	± 6.00e-08	Transit	NASA Exoplanet Archive	Stassun et al. 2017	2017
0.3550074	d	± 6.00e-08	Transit	NASA Exoplanet Archive	Grunblatt et al. 2015	2015
0.3550074	d	± 6.00e-08	Transit	NASA Exoplanet Archive	Iglesias-Marzoa et al. 2015	2015
0.355	d	± 0.0004	Transit	NASA Exoplanet Archive	Pepe et al. 2013	2013
0.3550074	d	± 6.00e-08	Transit	NASA Exoplanet Archive	Howard et al. 2013	2013
0.3550074	d	± 6.00e-08	Transit	NASA Exoplanet Archive	Sanchis-Ojeda et al. 2013	2013

Eccentricity 3 values

Band / method	Source	Reference	Year
Transit	NASA Exoplanet Archive	Bonomo et al. 2023	2023
Transit	NASA Exoplanet Archive	Iglesias-Marzoa et al. 2015	2015
Transit	NASA Exoplanet Archive	Pepe et al. 2013	2013

Equilibrium temperature 2 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
2,223	K	± 32	Transit	NASA Exoplanet Archive	Bonomo et al. 2023	2023
2,250	K	± 750	Transit	NASA Exoplanet Archive	Pepe et al. 2013	2013

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
Kepler-78	EclBin	0.6437″	11.72
2MASS J19345221+4426293	Star	67.23″	—
UCAC4 673-075854	Eruptive*	185.8″	—
UCAC4 673-075848	Eruptive*	196.8″	15.77
2MASS J19343997+4428167	Star	210.7″	—
ATO J293.6662+44.3987	EclBin	263.7″	—
2MASS J19344215+4430325	Star	277.4″	—
2MASS J19344315+4431178	Star	308.7″	—
2MASS J19350960+4432208	Star	349.6″	—
KOI-5525	Star	350.9″	—
TYC 3147-1507-1	Star	356.6″	11.5

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/kepler-78-b · Registry entry updated 2026-08-14.