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Uncommon exoplanet 25 EP

HD 102272 b

RA 176.5980° · Dec 14.1240° · exoplanet

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Score breakdown

· 4 badges
25 pts · Uncommon
Uncommon 34 pts → Rare
  • Hot Jupiter +10
  • Distant (over 1,000 light-years) +6
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 25

9 more points to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Distant (over 1,000 light-years) · +6
  • Gas giant · +4
  • Hot Jupiter · +10

Trivia

What it actually is

  • What it is made of. Its density says rock, though lighter than Earth's mix: probably less iron, or a thick shell of water and ice over the top.

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 8.7 it is just past naked-eye reach — ordinary binoculars will pull it in.
  • 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 March — 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. ≈ 19.9 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 1.8 million years even at the Parker Solar Probe's 192 km/s.

Properties

density gcc
4.02
diameter km
164554.98
discovery facility
McDonald Observatory
discovery method
Radial Velocity
discovery year
2008
dist ly
1132.0777
eccentricity
0.05
eq temp k
1038.01
host star teff
4790
insolation
176.4116
mag
8.69
mass earth
1570.0802
name
HD 102272 b
orbital period days
127.58
radius earth
12.9
semi major au
0.51
spect
K0
sys num planets
1
sys num stars
1

About HD 102272 b

HD 102272 b is an uncommon exoplanet. It lies about 1,132.1 light-years from Earth, shines at apparent magnitude 8.69, has spectral type K0 and has an equilibrium temperature near 1,038 K.

Its density says rock, though lighter than Earth's mix: probably less iron, or a thick shell of water and ice over the top.

How to see it

At apparent magnitude 8.69, it is an easy target for binoculars.

Like any astronomical target, HD 102272 b 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 HD 102272 b is an uncommon exoplanet

HD 102272 b scores 25 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 9 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Distant (over 1,000 light-years), Gas giant and Hot Jupiter — 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.