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Uncommon exoplanet 25 EP

PSR J1719-1438 b

RA 259.7920° · Dec -14.6336° · exoplanet

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Score breakdown

· 3 badges
25 pts · Uncommon
Uncommon 34 pts → Rare
  • Ultra-short period +14
  • Distant (over 1,000 light-years) +6
  • Confirmed exoplanet +5
Total score 25

9 more points to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Distant (over 1,000 light-years) · +6
  • Ultra-short period · +14

Trivia

Hard to believe

  • Denser than iron. It is packed tighter than solid iron — whatever it is made of, it is not ordinary rock.
  • A year in a day. Its entire year is over in 2.2 hours. Birthdays here would come round faster than meals.

What it actually is

  • Hugging its star. It orbits closer to its star than Mercury does to the Sun, completing a lap in less time than Mercury takes.
  • What it is made of. Denser than Earth — a solid world of rock and iron, with no meaningful atmosphere to speak of by mass.

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

  • 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 June — that's when to go looking.

Could we get there?

  • Verdict. Impossible with our current technology — and the next millennium of it.

Properties

density gcc
23
discovery facility
Parkes Observatory
discovery method
Pulsar Timing
discovery year
2011
dist ly
3913.872
eccentricity
0.06
host star teff
4500
mass earth
382.8
name
PSR J1719-1438 b
orbital period days
0.0907
semi major au
0.0044
sys num planets
1
sys num stars
1
tidally locked
yes
tidally locked inferred
yes

Nearby objects

About PSR J1719-1438 b

PSR J1719-1438 b is an uncommon exoplanet. It lies about 3,913.9 light-years from Earth, weighs about 382.8 Earth masses, completes an orbit every 0.09 days and belongs to a system of 1 known planets.

It orbits closer to its star than Mercury does to the Sun, completing a lap in less time than Mercury takes.

How to see it

Like any astronomical target, PSR J1719-1438 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 PSR J1719-1438 b is an uncommon exoplanet

PSR J1719-1438 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 3 science badges — Confirmed exoplanet, Distant (over 1,000 light-years) and Ultra-short period — 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.