Epic exoplanet 63 EP

Ross 128 b

RA 176.9376° · Dec 0.7993° · exoplanet

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Score breakdown

· 4 badges

63 pts · Epic

Epic 68 pts → Anomaly

In the habitable zone +30
Earth-sized +16
Nearby (<25 ly) +12
Confirmed exoplanet +5

Total score 63

5 more points to reach Anomaly.

Badges

Confirmed exoplanet · +5
In the habitable zone · +30
Earth-sized · +16
Nearby (<25 ly) · +12

Trivia

What makes it special

Goldilocks zone. Sits where it's neither too hot nor too cold — liquid water could exist.

Could we get there?

Verdict. A multi-generation starship could one day attempt the crossing.

Getting there

Aboard Voyager 1. ≈ 193.4 thousand years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 17.2 thousand years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 110 years in a starship at a tenth of light speed.
Distance. 11 light-years from Earth.

Look-back time

Look-back time. The light you'd see left around the year 2015.

Saying hello

Say hello. A radio message and its reply would take 22 years round-trip.

Standing on it

A year here. A full year lasts just 9.9 Earth days.

By the numbers

Size. About 1.1× the width of Earth.
Mass. About 1.4× the mass of Earth.
Your weight. You'd weigh about 1.1× your Earth weight standing here.
Temperature. A surprisingly temperate 28°C average.

How we found it

Discovery. Found by La Silla Observatory using the radial velocity method.

Properties

density gcc: 5.63
discovery facility: La Silla Observatory
discovery method: Radial Velocity
dist ly: 11.0063
eccentricity: 0.116
eq temp k: 301
habitable zone: yes
insolation: 1.38
mass earth: 1.4
name: Ross 128 b
orbital period days: 9.8658
radius earth: 1.11
sys num planets: 1

About Ross 128 b

Ross 128 b is an epic exoplanet. It lies about 11 light-years from Earth, has an equilibrium temperature near 301 K, spans roughly 1.11 Earth radii and weighs about 1.4 Earth masses.

Sits where it's neither too hot nor too cold — liquid water could exist.

How to see it

Like any astronomical target, Ross 128 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 Ross 128 b is an epic exoplanet

Ross 128 b scores 63 points on Spacedle's rarity scale, which places it in the epic tier. Another 5 points would lift it into a rarer tier.

That score comes from 4 science badges — Confirmed exoplanet, In the habitable zone, Earth-sized and Nearby (<25 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.