Key parameters at a glance
- A radius of 1.93 Earth radii
- A mass of 4.38 Earth masses
- Surface gravity around 1.18 g
- An orbital period of 2.771 days
- Semi-major axis 0.0309 AU
- Distance from Earth 1,490.94 light-years
- Earth Similarity Index 0.799
- Travel time at Voyager 1 speed 26,292,736 years
- Almost certainly tidally locked to its host star given the close orbit
K2-49 b Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#85of 1176
top 7.1%
This planet
1.93R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | K2-49 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.93 | 11.21 |
| Mass (M⊕) | 1.00 | 4.38 | 317.83 |
| Density (g/cm³) | 5.51 | 3.35 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.18 | 2.53 |
| Insolation (S⊕) | 1.00 | 59.00 | 0.037 |
Star Catalogue Identifiers
TIC
TIC 325335564
Gaia DR2
Gaia DR2 3895843479901597440
Gaia DR3
Gaia DR3 3895843479901597440
System
K2-49
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 2.77 Earth days (0.8% of a terrestrial year) at a mean orbital distance of 0.0309 AU.
Transit Fingerprint
Depth
0.209 %
Duration
2.307 h
Impact parameter b
0.620
Rp / R★
0.038300
Transit midpoint (BJD)
2,456,810.0203
Photometric dip
Transit produces a flux drop of 2,090 ppm lasting ≈ 2.31 h.
Extended Orbital Architecture
Planet / star radius ratio
0.038300
Semi-major axis / stellar radius
8.530
Impact parameter (b)
0.620
Transit mid-time (BJD)
2,456,810.0203
Angular separation (arcsec)
0.06760
Eq. Temperature
—
Insolation (S⊕)
59.00
Earth = 1.00
Earth Similarity (ESI)
0.799
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water). Close-orbiting tidally-locked around a cool host.
Discovery Paper
Primary reference
Crossfield et al. 2016Instrument
Kepler CCD Array
Publication
2016-09
Observation locale
Space
Discovery cohort
Planets confirmed in 2016 at K2 (12 shown).
Host System: K2-49
Spectral Class
K-type orange
Effective Temperature
4,175 K — cooler than the Sun (5,778 K)
Estimated Age
—
Stellar Radius
0.450 R☉
Stellar Mass
0.510 M☉
Metallicity [Fe/H]
—
Multi-band Host Photometry — 17 bands
Astrometric Data
Parallax
2.160 mas
Total Proper Motion
10.993 mas/yr
PM Right Ascension
0.39 mas/yr
PM Declination
-10.99 mas/yr
Galactic Cartesian (pc)
x = -0.997 · y = 0.047 · z = 0.061
Equatorial (J2000)
RA 177.32023° · Dec 3.47552°
Galactic ℓ, b
268.119° · 62.070°
Ecliptic λ, β
176.156° · 2.124°
HTM-20 index
-1562468837
Similar Worlds
Kepler-298 c
Super-Earth · K-type orange
Radius 1.93 R⊕ · 1,690.2 ly
Kepler-329 c
Super-Earth · K-type orange
Radius 1.93 R⊕ · 1,434.2 ly
Kepler-878 b
Super-Earth · K-type orange
Radius 1.93 R⊕ · 2,581.9 ly
K2-35 c
Super-Earth · K-type orange
Radius 1.93 R⊕ · 823.9 ly
K2-414 c
Super-Earth · K-type orange
Radius 1.93 R⊕ · 848.1 ly
K2-339 b
Super-Earth · K-type orange
Radius 1.92 R⊕ · 1,175.3 ly