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Rare exoplanet 45 EP

BD-06 1339 c

RA 88.2512° · Dec -5.9963° · exoplanet

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Score breakdown

· 4 badges
45 pts · Rare
Rare 50 pts → Epic
  • In the habitable zone +30
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 45

5 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • In the habitable zone · +30
  • Gas giant · +4
  • Multi-planet system · +6

Trivia

What makes it special

  • Goldilocks zone. Sits where it's neither too hot nor too cold — liquid water could exist on a surface here.

Hard to believe

  • It would float. It is less dense than water. Drop it in a big enough ocean and the whole world would bob on the surface.

What it actually is

  • What it is made of. Lighter than Neptune — a puffed-up ball of hydrogen and helium with no surface anywhere on it to stand on.
  • What the zone means. The habitable zone is only about temperature: it is the band where liquid water could survive on a surface. It is a promising address, not evidence of anything living.
  • Crowded system. One of at least 2 planets orbiting its star.

Sense of scale

  • In perspective. Inside our stellar backyard: every radio broadcast humanity has ever made has already swept past it.

Find it in the sky

  • How to spot it. At magnitude 9.7 you'll want a small backyard telescope.
  • Seen from everywhere. It sits almost on the celestial equator, so it can be seen from essentially anywhere on Earth.

Properties

density gcc
0.495
diameter km
106896.956
discovery facility
La Silla Observatory
discovery method
Radial Velocity
discovery year
2013
dist ly
66.1102
eccentricity
0.31
eq temp k
261.91
habitable zone
yes
host star teff
4324
insolation
0.5024
mag
9.7
mass earth
53
name
BD-06 1339 c
orbital period days
125.94
radius earth
8.38
semi major au
0.435
spect
K7/M0 V
sys num planets
2
sys num stars
1

Nearby objects

About BD-06 1339 c

BD-06 1339 c is a rare exoplanet. It lies about 66.1 light-years from Earth, shines at apparent magnitude 9.7, has spectral type K7/M0 V and has an equilibrium temperature near 262 K.

Sits where it's neither too hot nor too cold — liquid water could exist on a surface here.

How to see it

At apparent magnitude 9.7, a small backyard telescope will bring it into view.

Like any astronomical target, BD-06 1339 c 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 BD-06 1339 c is a rare exoplanet

BD-06 1339 c scores 45 points on Spacedle's rarity scale, which places it in the rare tier. Another 5 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, In the habitable zone, Gas giant and Multi-planet system — 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.