Key parameters at a glance
- A radius of 2.43 Earth radii
- A mass of 10.00 Earth masses
- Surface gravity around 1.70 g
- An orbital period of 5.255 days
- Semi-major axis 0.0600 AU
- Equilibrium temperature 1,075 K (802 °C)
- Distance from Earth 220.55 light-years
- Earth Similarity Index 0.245
- Travel time at Voyager 1 speed 3,889,358 years
HD 6061 b Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1294of 1978
top 65.4%
This planet
2.43R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | HD 6061 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.43 | 11.21 |
| Mass (M⊕) | 1.00 | 10.00 | 317.83 |
| Density (g/cm³) | 5.51 | 3.82 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.70 | 2.53 |
| Insolation (S⊕) | 1.00 | 339.10 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 10.000 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
HD
HD 6061
TIC
TIC 352413427
Gaia DR2
Gaia DR2 369669965470499456
Gaia DR3
Gaia DR3 369669965470499456
System
HD 6061
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 5.25 Earth days (1.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0600 AU.
Transit Fingerprint
Depth
0.057 %
Duration
3.240 h
Impact parameter b
0.282
Rp / R★
0.022098
Transit midpoint (BJD)
2,458,769.7863
Photometric dip
Transit produces a flux drop of 567 ppm lasting ≈ 3.24 h.
Extended Orbital Architecture
Planet / star radius ratio
0.022098
Semi-major axis / stellar radius
12.300
Impact parameter (b)
0.282
RV semi-amplitude (K)
3.630 m/s
Transit mid-time (BJD)
2,458,769.7863
Long. of periastron (ω)
90.00°
Angular separation (arcsec)
0.88700
Eq. Temperature
1,075K
(802 °C)
Insolation (S⊕)
339.10
Earth = 1.00
Earth Similarity (ESI)
0.245
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 6061
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,934 K — hotter than the Sun (5,778 K)
Estimated Age
2.40 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
1.007 R☉
Stellar Mass
1.027 M☉
Metallicity [Fe/H]
-0.05
Extended Stellar Properties
Surface gravity (log g)
4.441 dex
Stellar density
1.406 g/cm³
Activity index (log R'HK)
-4.760
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
14.760 mas
Total Proper Motion
14.147 mas/yr
PM Right Ascension
-9.88 mas/yr
PM Declination
-10.13 mas/yr
Galactic Cartesian (pc)
x = 0.767 · y = 0.214 · z = 0.604
Equatorial (J2000)
RA 15.59814° · Dec 37.18544°
Galactic ℓ, b
125.352° · -25.635°
Ecliptic λ, β
29.655° · 27.990°
HTM-20 index
137058196
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