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Epic exoplanet 73 EP

2MASS J0249-0557 c

RA 42.4852° · Dec -5.9600° · exoplanet

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Score breakdown

· 7 badges
73 pts · Epic
Epic 78 pts → Anomaly
  • Directly imaged +16
  • Lava world +14
  • Circumbinary (orbits both stars) +14
  • Orbits beyond Neptune's distance +12
  • Orbits a red dwarf +8
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 73

5 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Lava world · +14
  • Circumbinary (orbits both stars) · +14
  • Directly imaged · +16
  • Orbits a red dwarf · +8
  • Orbits beyond Neptune's distance · +12

Trivia

What makes it special

  • Lava world. Its surface is almost certainly an ocean of molten rock, kept liquid by the star it hugs.

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 18.3 it is far too faint for the eye: this one belongs to cameras and long exposures.
  • Seen from everywhere. It sits almost on the celestial equator, so it can be seen from essentially anywhere on Earth.
  • Best time of year. It stands highest in the middle of the night around November — that's when to go looking.

Could we get there?

  • Verdict. Hopelessly far for any craft humanity can build today.

Getting there

  • Aboard Voyager 1. ≈ 3.8 million years at Voyager 1's speed (17 km/s).

Properties

circumbinary
yes
density gcc
3.79
diameter km
221625.1995
discovery facility
Mauna Kea Observatory
discovery method
Imaging
discovery year
2018
dist ly
215.4629
eq temp k
1723
host star teff
2859
insolation
0
mag
18.3
mass earth
3616.8873
name
2MASS J0249-0557 c
radius earth
17.3739
semi major au
1950
spect
M6 V
sys num planets
1
sys num stars
2

About 2MASS J0249-0557 c

2MASS J0249-0557 c is an epic exoplanet. It lies about 215.5 light-years from Earth, shines at apparent magnitude 18.3, has spectral type M6 V and has an equilibrium temperature near 1,723 K.

Its surface is almost certainly an ocean of molten rock, kept liquid by the star it hugs.

How to see it

At apparent magnitude 18.3, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, 2MASS J0249-0557 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 2MASS J0249-0557 c is an epic exoplanet

2MASS J0249-0557 c scores 73 points on Spacedle's rarity scale, which places it in the epic tier. Another 5 points would lift it into a rarer tier.

That score comes from 7 science badges — Confirmed exoplanet, Gas giant, Lava world, Circumbinary (orbits both stars), Directly imaged, Orbits a red dwarf and Orbits beyond Neptune's distance — 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.