Temperature
6148 K
6148 to 6327
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Stellar HostProfile
KELT-2 A
Unclassified star • 134.1 pc
Records
8
literature rows
Planets
1
system count
References
9
distinct source labels
HIP: HIP 29301TIC: TIC 97735908HD: HD 42176
Approximate color
from effective temperature
Canonical Summary
Adopted host values from one source row
Values come from the row with the most populated summary measurements. Missing values stay missing. Ranges and counts describe all source rows.
Stellar source: Bonomo et al. 2017 • System source: TICv8
Mass
1.31 Msun
1.25 to 1.54
Radius
1.83 Rsun
1.83 to 1.93
Age
3.97 Gyr
single adopted value
Distance
134.1 pc
single adopted value
Planets
1
Stable across source rows
Scale Comparison
Radius against the Sun
Current adopted radius: 1.83 R☉ (circles scaled linearly by radius)
Sun
1.0 R☉ baseline
KELT-2 A
1.83 R☉
System Layout
Known planets
1 planets linked to this host
KELT-2 A b
Transit
◌
Discovery
2012
Period
4.11 days
Radius
15.13 R⊕
Mass
540.3 M⊕
Eq. Temp
—
KELT-2 A and Its Giant Planet
KELT-2 A is an F8 star 437 light-years away. Its spectral class places it among the hotter, more massive stars, and its measured properties bear that out: it has 1.31 solar masses and 1.83 solar radii, with a temperature of 6150 K and an age of 3.97 billion years. Its mass, radius, and temperature are all greater or higher than the Sun's. One planet has been found orbiting this star.
That planet is KELT-2 A b, a Jupiter-like world discovered by the transit method in 2012. With a radius of 15.1 Earth radii, it is far larger than Earth, and its mass of 540 Earth masses is larger than Earth's as well, amounting to roughly 1.7 times Jupiter's mass. Its mean density is 0.859 g/cm³. KELT-2 A b completes an orbit in just 4.11 days.
Provenance
Underlying measurements and references
Evidence Summary
Rows
8
Stellar refs
8
System refs
1
Distancestable
Parallaxstable
Temperaturedisputed
Massdisputed
Radiusdisputed
Agestable
Luminositydisputed
Surface Gravitydisputed
Metallicitydisputed
Spectral Typestable
| ST TEFF | ST MASS | ST RAD | ST AGE | ST LUM | ST SPECTYPE | SY DIST | Stellar Ref | System Ref |
|---|---|---|---|---|---|---|---|---|
| 6148 | 1.31 | 1.83 | 3.97 | — | — | 134.1 | Bonomo et al. 2017 | TICv8 |
| 6198 | — | 1.92 | — | 0.69 | — | 134.1 | Gaia DR2 | TICv8 |
| 6327 | 1.54 | 1.93 | — | — | — | 134.1 | Stassun et al. 2017 | TICv8 |
| — | — | — | — | — | F8 | 134.1 | Cannon & Pickering 1918 | TICv8 |
| — | — | — | — | — | — | 134.1 | Nordstrom et al. 2004 | TICv8 |
| 6151 | 1.31 | 1.83 | — | — | — | 134.1 | Beatty et al. 2012 | TICv8 |
| 6327 | — | 1.88 | — | — | — | 134.1 | ExoFOP | TICv8 |
| 6327 | 1.25 | 1.88 | — | 0.71 | — | 134.1 | TICv8 | TICv8 |