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Epic exoplanet 69 EP

NN Ser c

RA 238.2337° · Dec 12.9121° · exoplanet

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Score breakdown

· 8 badges
69 pts · Epic
Epic 78 pts → Anomaly
  • Circumbinary (orbits both stars) +14
  • Orbits a hot blue-white star +14
  • Long-period world +10
  • Disputed — it may not be there at all +10
  • Distant (over 1,000 light-years) +6
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 69

9 more points to reach Anomaly.

Badges

  • Confirmed exoplanet · +5
  • Distant (over 1,000 light-years) · +6
  • Gas giant · +4
  • Long-period world · +10
  • Multi-planet system · +6
  • Circumbinary (orbits both stars) · +14
  • Orbits a hot blue-white star · +14
  • Disputed — it may not be there at all · +10

Trivia

What it actually is

  • What it is made of. Denser than Earth — a solid world of rock and iron, with no meaningful atmosphere to speak of by mass.
  • Crowded system. One of at least 2 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 16.9 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 May — 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. ≈ 29.6 million years at Voyager 1's speed (17 km/s).

Properties

circumbinary
yes
controversial
yes
density gcc
6.4
diameter km
160728.12
discovery facility
Multiple Observatories
discovery method
Eclipse Timing Variations
discovery year
2010
dist ly
1682.3714
eccentricity
0.089
host star teff
57000
mag
16.943
mass earth
2329.6
name
NN Ser c
orbital period days
6987
radius earth
12.6
semi major au
5.35
spect
WD
sys num planets
2
sys num stars
2

About NN Ser c

NN Ser c is an epic exoplanet. It lies about 1,682.4 light-years from Earth, shines at apparent magnitude 16.94, has spectral type WD and spans roughly 12.6 Earth radii.

Denser than Earth — a solid world of rock and iron, with no meaningful atmosphere to speak of by mass.

How to see it

At apparent magnitude 16.94, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, NN Ser 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 NN Ser c is an epic exoplanet

NN Ser c scores 69 points on Spacedle's rarity scale, which places it in the epic tier. Another 9 points would lift it into a rarer tier.

That score comes from 8 science badges — Confirmed exoplanet, Distant (over 1,000 light-years), Gas giant, Long-period world, Multi-planet system, Circumbinary (orbits both stars), Orbits a hot blue-white star and Disputed — it may not be there at all — 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.