Key parameters at a glance
- A radius of 1.36 Earth radii
- A mass of 4.30 Earth masses
- Surface gravity around 2.31 g
- An orbital period of 3.044 days
- Semi-major axis 0.0443 AU
- Equilibrium temperature 1,586 K (1312 °C)
- Distance from Earth 148.79 light-years
- Earth Similarity Index 0.165
- Travel time at Voyager 1 speed 2,623,844 years
1 sibling around HD 25463
HD 25463 c shares its host star with 1 other confirmed planet. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| HD 25463 c this | Super-Earth | 1.36 | 4.30 | 3.044 | 1,586 | 2023 |
| HD 25463 b | Sub-Neptune | 2.55 | 8.70 | 7.049 | 1,198 | 2023 |
HD 25463 c Planet Profile
Physical Specs
Classification
Planet Type
Super-Earth
Discovery
Size rank in cohort
Rank by radius
#978of 1176
top 83.1%
This planet
1.36R⊕
Super-Earth median
1.60R⊕
Nearest-size peers
| Metric | Earth | HD 25463 c | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 1.36 | 11.21 |
| Mass (M⊕) | 1.00 | 4.30 | 317.83 |
| Density (g/cm³) | 5.51 | 9.09 | 1.33 |
| Surface Gravity (g) | 1.00 | 2.31 | 2.53 |
| Insolation (S⊕) | 1.00 | 1,413.50 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 4.300 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
HD
HD 25463
HIP
HIP 18893
TIC
TIC 407966340
Gaia DR2
Gaia DR2 3301771025223950336
Gaia DR3
Gaia DR3 3301771025223950336
System
HD 25463
Percentile among Super-Earth cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.04 Earth days (0.8% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0443 AU.
Transit Fingerprint
Depth
0.008 %
Duration
1.351 h
Impact parameter b
0.689
Rp / R★
0.008815
Transit midpoint (BJD)
2,458,438.4730
Photometric dip
Transit produces a flux drop of 83 ppm lasting ≈ 1.35 h.
Extended Orbital Architecture
Planet / star radius ratio
0.008815
Semi-major axis / stellar radius
6.600
Impact parameter (b)
0.689
RV semi-amplitude (K)
1.600 m/s
Transit mid-time (BJD)
2,458,438.4730
Long. of periastron (ω)
90.00°
Angular separation (arcsec)
0.97100
Eq. Temperature
1,586K
(1312 °C)
Insolation (S⊕)
1,413.50
Earth = 1.00
Earth Similarity (ESI)
0.165
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
Detection Signatures
Transit photometry
A transit dip has been observed from at least one telescope.
Radial velocity
Stellar wobble has been measured spectroscopically.
Discovery Paper
Primary reference
Akana Murphy et al. 2023Instrument
TESS CCD Array
Publication
2023-10
Observation locale
Space
Discovery cohort
Planets confirmed in 2023 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: HD 25463
Spectral Class
F-type yellow-white
Effective Temperature
6,353 K — hotter than the Sun (5,778 K)
Estimated Age
2.30 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.418 R☉
Stellar Mass
1.251 M☉
Metallicity [Fe/H]
-0.02
Extended Stellar Properties
Surface gravity (log g)
4.227 dex
Stellar density
0.610 g/cm³
Activity index (log R'HK)
-5.260
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
21.892 mas
Total Proper Motion
188.412 mas/yr
PM Right Ascension
89.57 mas/yr
PM Declination
-165.76 mas/yr
Galactic Cartesian (pc)
x = 0.482 · y = 0.861 · z = 0.160
Equatorial (J2000)
RA 60.74834° · Dec 9.20777°
Galactic ℓ, b
181.689° · -31.074°
Ecliptic λ, β
60.533° · -11.290°
HTM-20 index
-1046137684
Similar Worlds
TOI-411 b
Super-Earth · F-type yellow-white
Radius 1.36 R⊕ · 204.8 ly
Kepler-757 b
Super-Earth · F-type yellow-white
Radius 1.36 R⊕ · 3,485.6 ly
Kepler-372 b
Super-Earth · F-type yellow-white
Radius 1.36 R⊕ · 4,872.6 ly
Kepler-997 b
Super-Earth · F-type yellow-white
Radius 1.36 R⊕ · 1,525.0 ly
Kepler-320 c
Super-Earth · F-type yellow-white
Radius 1.37 R⊕ · 2,696.0 ly
Kepler-1300 b
Super-Earth · F-type yellow-white
Radius 1.37 R⊕ · 2,534.3 ly