Confirmed Exoplanet Discovered 2022

TOI-1695 b

A super-earth orbiting the m-type red dwarf TOI-1695, located approximately 147.2 light-years from Earth.

Key parameters at a glance

  • A radius of 1.90 Earth radii
  • A mass of 6.36 Earth masses
  • Surface gravity around 1.76 g
  • An orbital period of 3.134 days
  • Semi-major axis 0.0335 AU
  • Equilibrium temperature 698 K (425 °C)
  • Distance from Earth 147.20 light-years
  • Earth Similarity Index 0.416
  • Travel time at Voyager 1 speed 2,595,821 years
  • Almost certainly tidally locked to its host star given the close orbit

TOI-1695 b Planet Profile

Physical Specs

Radius
1.90 R⊕
Radius (Jupiter)
0.170 R♃
Mass
6.36 M⊕
Mass (Jupiter)
0.020 M♃
Density
5.00 g/cm³
Surface Gravity
1.76 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.416
HZ Position Inner
Controversial No

Discovery

Year 2022
Method Transit
Facility Transiting Exoplanet Survey Satellite (TESS)
Telescope 0.1 m TESS Telescope

Size rank in cohort

Rank by radius

#125of 1176

top 10.5%

This planet

1.90R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Metric Earth TOI-1695 b Jupiter
Radius (R⊕)1.001.9011.21
Mass (M⊕)1.006.36317.83
Density (g/cm³)5.515.001.33
Surface Gravity (g)1.001.762.53
Insolation (S⊕)1.0039.000.037

Alternative Mass Estimates

Method Value Interpretation
Best measured mass 6.360 M⊕ Direct mass measurement (not derived).

Star Catalogue Identifiers

TIC

TIC 422756130

Gaia DR2

Gaia DR2 534988616816537728

Gaia DR3

Gaia DR3 534988616816537728

System

TOI-1695

Percentile among Super-Earth cohort

Radius 1.900 R⊕ · percentile 88 / cohort 1176
Mass 6.360 M⊕ · percentile 94 / cohort 1176
Orbital period 3.13 d · percentile 23 / cohort 1164
Distance 45.13 pc · percentile 10 / cohort 1171
ESI 0.416 · percentile 63 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period
3.134 days
Semi-major axis
0.0335 AU
Eccentricity
0.097
Inclination
87.20 °

Year Length

A year here lasts approximately 3.13 Earth days (0.9% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0335 AU.

Transit Fingerprint

Depth

0.124 %

Duration

1.311 h

Impact parameter b

0.690

Rp / R★

0.034000

Transit midpoint (BJD)

2,458,791.5206

Photometric dip

Transit produces a flux drop of 1,236 ppm lasting ≈ 1.31 h.

Extended Orbital Architecture

Planet / star radius ratio

0.034000

Semi-major axis / stellar radius

16.300

Impact parameter (b)

0.690

RV semi-amplitude (K)

4.390 m/s

Transit mid-time (BJD)

2,458,791.5206

Long. of periastron (ω)

90.00°

Angular separation (arcsec)

0.74300

Eq. Temperature

698K

(425 °C)

Insolation (S⊕)

39.00

Earth = 1.00

Earth Similarity (ESI)

0.416

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the surface is too hot to retain surface water. Close-orbiting tidally-locked around a cool host.

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

Kiefer et al. 2022

Instrument

TESS CCD Array

Publication

2022-11

Observation locale

Space

Host System: TOI-1695

Spectral Class

M-type red dwarf

Effective Temperature

3,690 K — cooler than the Sun (5,778 K)

Estimated Age

Stellar Radius

0.515 R☉

Stellar Mass

0.513 M☉

Metallicity [Fe/H]

0.00

Extended Stellar Properties

Surface gravity (log g)

4.725 dex

Stellar density

5.300 g/cm³

Systemic radial velocity

-59.46 km/s

Rotational v·sin i

1.30 km/s

Rotation period

47.70 days

Activity index (log R'HK)

-4.740

Metallicity ratio

[Fe/H]

Distance
45.13 parsec
Light-years 147.20 ly
V-band magnitude
12.99 mag
Voyager-speed travel 2,595,821 yr

Multi-band Host Photometry — 11 bands

8.414.414.35B12.99V12.14Gaia11.03TESS9.64J8.98H8.82K8.68W18.61W28.51W38.40W4

Astrometric Data

Parallax

22.129 mas

Total Proper Motion

82.341 mas/yr

PM Right Ascension

71.71 mas/yr

PM Declination

40.47 mas/yr

Galactic Cartesian (pc)

x = 0.282 · y = 0.114 · z = 0.953

Equatorial (J2000)

RA 21.92173° · Dec 72.29661°

Galactic ℓ, b

125.716° · 9.621°

Ecliptic λ, β

59.714° · 55.983°

HTM-20 index

1292713045

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