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Rare exoplanet 45 EP

OGLE-2018-BLG-0740L b

RA 272.1770° · Dec -29.8358° · exoplanet

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Score breakdown

· 6 badges
45 pts · Rare
Rare 50 pts → Epic
  • Found by microlensing +12
  • Long-period world +10
  • Orbits a Sun-like star +8
  • Distant (over 1,000 light-years) +6
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 45

5 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Distant (over 1,000 light-years) · +6
  • Gas giant · +4
  • Long-period world · +10
  • Found by microlensing · +12
  • Orbits a Sun-like star · +8

Trivia

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 18.2 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 June — 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. ≈ 183.4 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 16.3 million years even at the Parker Solar Probe's 192 km/s.

Properties

density gcc
3.84
diameter km
164554.98
discovery facility
OGLE
discovery method
Microlensing
discovery year
2019
dist ly
10436.992
eccentricity
0
host star teff
5912
mag
18.21
mass earth
1500
name
OGLE-2018-BLG-0740L b
orbital period days
5480
radius earth
12.9
semi major au
5
spect
G V
sys num planets
1
sys num stars
1

About OGLE-2018-BLG-0740L b

OGLE-2018-BLG-0740L b is a rare exoplanet. It lies about 10,437 light-years from Earth, shines at apparent magnitude 18.21, has spectral type G V and spans roughly 12.9 Earth radii.

Its density says rock, though lighter than Earth's mix: probably less iron, or a thick shell of water and ice over the top.

How to see it

At apparent magnitude 18.21, it takes a larger telescope or a long-exposure image to capture.

Like any astronomical target, OGLE-2018-BLG-0740L 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 OGLE-2018-BLG-0740L b is a rare exoplanet

OGLE-2018-BLG-0740L b 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 6 science badges — Confirmed exoplanet, Distant (over 1,000 light-years), Gas giant, Long-period world, Found by microlensing and Orbits a Sun-like star — 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.