← Back to dex
Uncommon exoplanet 29 EP

Kepler-88 d

RA 291.1481° · Dec 40.6694° · exoplanet

Loading sky survey…
🌌 View in 3D star map
Tonight’s visibility

Computing the sky for your location…

Score breakdown

· 5 badges
29 pts · Uncommon
Uncommon 34 pts → Rare
  • Orbits a Sun-like star +8
  • Distant (over 1,000 light-years) +6
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 29

5 more points to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Distant (over 1,000 light-years) · +6
  • Gas giant · +4
  • Multi-planet system · +6
  • Orbits a Sun-like star · +8

Trivia

What it actually is

  • What it is made of. Too light to be solid rock and too heavy to be all gas: most likely a deep global ocean or a thick steamy envelope over a rocky core.
  • Crowded system. One of at least 3 planets orbiting its star.

Sense of scale

  • In perspective. Far away by human standards, yet still a local address inside the Milky Way's spiral arms.

Find it in the sky

  • How to spot it. At magnitude 13.2 it is far too faint for the eye: this one belongs to cameras and long exposures.
  • Northern sky. It rides the northern half of the sky — an easier target the further north you are.
  • Best time of year. It stands highest in the middle of the night around July — that's when to go looking.

Could we get there?

  • Verdict. Impossible with our current technology — and the next millennium of it.

Getting there

  • Aboard Voyager 1. ≈ 21.6 million years at Voyager 1's speed (17 km/s).

Properties

density gcc
2.36
diameter km
167106.22
discovery facility
W. M. Keck Observatory
discovery method
Radial Velocity
discovery year
2020
dist ly
1229.1613
eccentricity
0.41
eq temp k
158.95
host star teff
5466
inclination
89
insolation
0.1124
mag
13.209
mass earth
965.147
name
Kepler-88 d
orbital period days
1403
radius earth
13.1
semi major au
2.4663
spect
G6 V
sys num planets
3
sys num stars
1

About Kepler-88 d

Kepler-88 d is an uncommon exoplanet. It lies about 1,229.2 light-years from Earth, shines at apparent magnitude 13.21, has spectral type G6 V and has an equilibrium temperature near 159 K.

Too light to be solid rock and too heavy to be all gas: most likely a deep global ocean or a thick steamy envelope over a rocky core.

How to see it

At apparent magnitude 13.21, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, Kepler-88 d is best seen from a dark site away from city lights, and when it is above the horizon depends on your latitude and the time of year. The visibility panel above works out tonight's viewing window for your saved location.

Why Kepler-88 d is an uncommon exoplanet

Kepler-88 d scores 29 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 5 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, Distant (over 1,000 light-years), Gas giant, Multi-planet system and Orbits a Sun-like star — each earned for a real, measurable property of the object. Rarity on Spacedle is never random: the more remarkable an object's astrophysics, the more badges it collects, the higher it scores, and the rarer it ranks.