Key parameters at a glance
- A radius of 2.24 Earth radii
- A mass of 5.63 Earth masses
- Surface gravity around 1.12 g
- An orbital period of 26.915 days
- Semi-major axis 0.1784 AU
- Distance from Earth 87.38 light-years
- Earth Similarity Index 0.743
- Travel time at Voyager 1 speed 1,540,948 years
Context from the literature
HD 134606 is a yellow-hued star with a planetary system, positioned in the southern constellation of Apus. It is below the nominal limit for visibility with the naked eye, having an apparent visual magnitude of 6.86. Based upon an annual parallax shift of 37.3 mas, it is located 87.44 light-years away. The star appears to be moving further from the Earth with a heliocentric radial velocity of +1.9 km/s.
Excerpted from Wikipedia · full article
4 siblings around HD 134606
HD 134606 f shares its host star with 4 other confirmed planets. Side-by-side measurements below.
| Planet | Type | Radius (R⊕) | Mass (M⊕) | Period (d) | Eq. T (K) | Year |
|---|---|---|---|---|---|---|
| HD 134606 e | Super-Earth | 1.33 | 2.34 | 4.320 | — | 2024 |
| HD 134606 b | Sub-Neptune | 2.97 | 9.09 | 12.089 | — | 2024 |
| HD 134606 f this | Sub-Neptune | 2.24 | 5.63 | 26.915 | — | 2024 |
| HD 134606 c | Sub-Neptune | 3.37 | 11.31 | 58.883 | — | 2024 |
| HD 134606 d | Neptune-like | 7.59 | 44.80 | 966.500 | — | 2024 |
HD 134606 f Planet Profile
Physical Specs
Classification
Planet Type
Sub-Neptune
Discovery
Size rank in cohort
Rank by radius
#1607of 1978
top 81.2%
This planet
2.24R⊕
Sub-Neptune median
2.71R⊕
Nearest-size peers
| Metric | Earth | HD 134606 f | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 2.24 | 11.21 |
| Mass (M⊕) | 1.00 | 5.63 | 317.83 |
| Density (g/cm³) | 5.51 | 2.75 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.12 | 2.53 |
| Insolation (S⊕) | 1.00 | — | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Minimum mass (M sin i) | 5.630 M⊕ | Lower bound from radial-velocity fitting. |
Star Catalogue Identifiers
HD
HD 134606
HIP
HIP 74653
TIC
TIC 262457542
Gaia DR2
Gaia DR2 5798962867668048768
Gaia DR3
Gaia DR3 5798962867668048768
System
HD 134606
Percentile among Sub-Neptune cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 26.92 Earth days (7.4% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.1784 AU.
Eq. Temperature
—
Insolation (S⊕)
—
Earth = 1.00
Earth Similarity (ESI)
0.743
0 = alien, 1 = Earth-identical
Discovery Paper
Primary reference
Li et al. 2024Instrument
Multiple Instruments
Publication
2024-01
Observation locale
Ground
Discovery cohort
Planets confirmed in 2024 at Multiple Observatories (12 shown).
Host System: HD 134606
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,576 K — cooler than the Sun (5,778 K)
Estimated Age
7.30 Gyr — older than the Sun (4.6 Gyr)
Stellar Radius
1.158 R☉
Stellar Mass
1.046 M☉
Metallicity [Fe/H]
0.34
Extended Stellar Properties
Surface gravity (log g)
4.330 dex
Stellar density
0.950 g/cm³
Systemic radial velocity
2.30 km/s
Rotational v·sin i
1.30 km/s
Rotation period
42.00 days
Activity index (log R'HK)
-5.100
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
37.297 mas
Total Proper Motion
242.373 mas/yr
PM Right Ascension
-177.75 mas/yr
PM Declination
-164.77 mas/yr
Galactic Cartesian (pc)
x = -0.220 · y = -0.251 · z = -0.943
Equatorial (J2000)
RA 228.81039° · Dec -70.52033°
Galactic ℓ, b
314.434° · -10.931°
Ecliptic λ, β
250.053° · -49.920°
HTM-20 index
-420074960
Similar Worlds
Kepler-157 c
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.24 R⊕ · 2,523.5 ly
Kepler-284 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.24 R⊕ · 3,365.8 ly
Kepler-69 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.24 R⊕ · 2,383.0 ly
Kepler-556 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.24 R⊕ · 2,200.2 ly
Kepler-439 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.24 R⊕ · 2,469.2 ly
Kepler-534 b
Sub-Neptune · G-type yellow (Sun-like)
Radius 2.24 R⊕ · 1,861.2 ly