Uncommon exoplanet 32 EP

OGLE-2017-BLG-1691L b

RA 263.5938° · Dec -29.2848° · exoplanet

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Score breakdown

· 4 badges

32 pts · Uncommon

Uncommon 33 pts → Rare

Found by microlensing +12
Distant (>1000 ly) +10
Confirmed exoplanet +5
Sub-Neptune +5

Total score 32

1 more point to reach Rare.

Badges

Confirmed exoplanet · +5
Sub-Neptune · +5
Found by microlensing · +12
Distant (>1000 ly) · +10

Trivia

Could we get there?

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

Getting there

Aboard Voyager 1. ≈ 417.8 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 37.1 million years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 237.8 thousand years in a starship at a tenth of light speed.
Distance. 23.8 thousand light-years from Earth.

Look-back time

Look-back time. This light set out before Homo sapiens existed.

Saying hello

Say hello. A radio message and its reply would take 47.6 thousand years round-trip.

By the numbers

Size. About 3.9× the width of Earth.
Volume. About 60.2 Earths could fit inside it.
Mass. About 14.6× the mass of Earth.
Your weight. You'd weigh about 1.0× your Earth weight standing here.

How we found it

Discovery. Found by OGLE using the microlensing method.

Properties

density gcc: 1.33
discovery facility: OGLE
discovery method: Microlensing
dist ly: 23776.7724
mass earth: 14.6201
name: OGLE-2017-BLG-1691L b
radius earth: 3.92
sys num planets: 1

About OGLE-2017-BLG-1691L b

OGLE-2017-BLG-1691L b is an uncommon exoplanet. It lies about 23,776.8 light-years from Earth, spans roughly 3.92 Earth radii, weighs about 14.62 Earth masses and belongs to a system of 1 known planets.

About 3.9× the width of Earth.

How to see it

Like any astronomical target, OGLE-2017-BLG-1691L 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-2017-BLG-1691L b is an uncommon exoplanet

OGLE-2017-BLG-1691L b scores 32 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 1 point would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, Sub-Neptune, Found by microlensing and Distant (>1000 ly) — 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.