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Epic exoplanet 55 EP

2MASS J12073346-3932539 b

RA 181.8891° · Dec -39.5484° · exoplanet

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Score breakdown

· 6 badges
55 pts · Epic
Epic 78 pts → Anomaly
  • Directly imaged +16
  • Orbits beyond Neptune's distance +12
  • Hot Jupiter +10
  • Orbits a red dwarf +8
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 55

23 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Hot Jupiter · +10
  • Directly imaged · +16
  • Orbits a red dwarf · +8
  • Orbits beyond Neptune's distance · +12

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.

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 20.1 it is far too faint for the eye: this one belongs to cameras and long exposures.
  • Southern sky. It rides the southern half of the sky — an easier target the further south 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. Hopelessly far for any craft humanity can build today.

Getting there

  • Aboard Voyager 1. ≈ 3.7 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 327.5 thousand years even at the Parker Solar Probe's 192 km/s.

Properties

density gcc
2.35
diameter km
200177.5994
discovery facility
Paranal Observatory
discovery method
Imaging
discovery year
2004
dist ly
209.7444
eq temp k
1163
host star teff
2825
insolation
0
mag
20.15
mass earth
1652.7077
name
2MASS J12073346-3932539 b
radius earth
15.6926
semi major au
46
spect
M8
sys num planets
1
sys num stars
1

About 2MASS J12073346-3932539 b

2MASS J12073346-3932539 b is an epic exoplanet. It lies about 209.7 light-years from Earth, shines at apparent magnitude 20.15, has spectral type M8 and has an equilibrium temperature near 1,163 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 20.15, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, 2MASS J12073346-3932539 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 2MASS J12073346-3932539 b is an epic exoplanet

2MASS J12073346-3932539 b scores 55 points on Spacedle's rarity scale, which places it in the epic tier. Another 23 points would lift it into a rarer tier.

That score comes from 6 science badges — Confirmed exoplanet, Gas giant, Hot Jupiter, 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.