Key parameters at a glance

A radius of 1.52 Earth radii
A mass of 2.92 Earth masses
Surface gravity around 1.26 g
An orbital period of 7.990 days
Semi-major axis 0.0785 AU
Equilibrium temperature 1,113 K (840 °C)
Distance from Earth 3,436.28 light-years
Earth Similarity Index 0.264
Travel time at Voyager 1 speed 60,598,826 years

Kepler-1289 b Planet Profile

Physical Specs

Radius

1.52 R⊕

Radius (Jupiter)

0.136 R♃

Mass

2.92 M⊕

Mass (Jupiter)

0.009 M♃

Density

4.57 g/cm³

Surface Gravity

1.26 g (Earth)

Classification

Planet Type

Super-Earth

ESI Score 0.264

HZ Position Inner

Controversial No

Discovery

Year 2016

Method Transit

Facility Kepler

Telescope 0.95 m Kepler Telescope

Size rank in cohort

Rank by radius

#707of 1176

top 60.0%

This planet

1.52R⊕

Super-Earth median

1.60R⊕

Nearest-size peers

Kepler-65 d 1.52 R⊕ Kepler-348 b 1.52 R⊕ Kepler-306 b 1.52 R⊕

Metric	Earth	Kepler-1289 b	Jupiter
Radius (R⊕)	1.00	1.52	11.21
Mass (M⊕)	1.00	2.92	317.83
Density (g/cm³)	5.51	4.57	1.33
Surface Gravity (g)	1.00	1.26	2.53
Insolation (S⊕)	1.00	223.44	0.037

Star Catalogue Identifiers

TIC

TIC 184428068

Gaia DR2

Gaia DR2 2076819276942298496

Gaia DR3

Gaia DR3 2076819276942298496

System

Kepler-1289

Percentile among Super-Earth cohort

Radius 1.520 R⊕ · percentile 39 / cohort 1176

Mass 2.920 M⊕ · percentile 36 / cohort 1176

Orbital period 7.99 d · percentile 57 / cohort 1164

Distance 1,053.57 pc · percentile 84 / cohort 1171

ESI 0.264 · percentile 28 / cohort 1176

Orbit & Habitability

Orbital Dynamics

Period

7.990 days

Semi-major axis

0.0785 AU

Eccentricity

0.000

Inclination

89.67 °

Year Length

A year here lasts approximately 7.99 Earth days (2.2% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0785 AU.

Transit Fingerprint

Depth

0.017 %

Duration

3.274 h

Impact parameter b

0.176

Rp / R★

0.012205

Transit midpoint (BJD)

2,454,965.2718

Photometric dip

Transit produces a flux drop of 166 ppm lasting ≈ 3.27 h.

Extended Orbital Architecture

Planet / star radius ratio

0.012205

Semi-major axis / stellar radius

6.700

Impact parameter (b)

0.176

Transit mid-time (BJD)

2,454,965.2718

Angular separation (arcsec)

0.07450

Eq. Temperature

1,113K

(840 °C)

Insolation (S⊕)

223.44

Earth = 1.00

Earth Similarity (ESI)

0.264

0 = alien, 1 = Earth-identical

Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.

Discovery Paper

Primary reference

Morton et al. 2016

Instrument

Kepler CCD Array

Publication

2016-05

Observation locale

Space

Discovery cohort

Planets confirmed in 2016 at Kepler (12 shown).

Kepler-1512 b · Rocky Terrestrial Kepler-1410 b · Super-Earth Kepler-560 b · Super-Earth Kepler-1389 b · Super-Earth Kepler-1450 b · Super-Earth Kepler-1544 b · Super-Earth Kepler-1459 b · Super-Earth Kepler-1638 b · Super-Earth Kepler-737 b · Super-Earth Kepler-1185 b · Super-Earth Kepler-1178 b · Rocky Terrestrial Kepler-1040 b · Sub-Neptune

Host System: Kepler-1289

Spectral Class

F-type yellow-white

Effective Temperature

6,080 K — hotter than the Sun (5,778 K)

Estimated Age

2.95 Gyr — younger than the Sun (4.6 Gyr)

Stellar Radius

1.170 R☉

Stellar Mass

1.100 M☉

Metallicity [Fe/H]

0.02

Extended Stellar Properties

Surface gravity (log g)

4.350 dex

Stellar density

1.905 g/cm³

Metallicity ratio

[Fe/H]

Distance

1,053.57 parsec

Light-years 3,436.28 ly

V-band magnitude

14.73 mag

Voyager-speed travel 60,598,826 yr

Multi-band Host Photometry — 16 bands

Astrometric Data

Parallax

0.921 mas

Total Proper Motion

12.625 mas/yr

PM Right Ascension

-6.99 mas/yr

PM Declination

-10.52 mas/yr

Galactic Cartesian (pc)

x = 0.335 · y = -0.676 · z = 0.657

Equatorial (J2000)

RA 296.38877° · Dec 41.04051°

Galactic ℓ, b

75.127° · 8.184°

Ecliptic λ, β

313.057° · 60.595°

HTM-20 index

-1390268870