Common exoplanet 21 EP

PSR B1257+12 b

RA 195.0149° · Dec 12.6824° · exoplanet

Loading sky survey…

🌌 View in 3D star map

Tonight’s visibility

Computing the sky for your location…

Score breakdown

· 3 badges

21 pts · Common

Common 24 pts → Uncommon

Distant (>1000 ly) +10
Multi-planet system +6
Confirmed exoplanet +5

Total score 21

3 more points to reach Uncommon.

Badges

Confirmed exoplanet · +5
Multi-planet system · +6
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. ≈ 34.4 million years at Voyager 1's speed (17 km/s).
Fastest probe ever. ≈ 3.1 million years even at the Parker Solar Probe's 192 km/s.
At 10% light speed. ≈ 19.6 thousand years in a starship at a tenth of light speed.
Distance. 1957 light-years from Earth.

Look-back time

Look-back time. The light you'd see left around the year 69.

Saying hello

Say hello. A radio message and its reply would take 3914 years round-trip.

Standing on it

A year here. A full year lasts just 25.3 Earth days.

By the numbers

Size. Around 34% of Earth's width.
Mass. About 0× the mass of Earth.
Your weight. You'd weigh about 0.2× your Earth weight standing here.

How we found it

Discovery. Found by Arecibo Observatory using the pulsar timing method.

Cosmic context

Crowded system. One of at least 3 planets orbiting its star.

Properties

density gcc: 2.85
discovery facility: Arecibo Observatory
discovery method: Pulsar Timing
dist ly: 1956.936
eccentricity: 0
mass earth: 0.02
name: PSR B1257+12 b
orbital period days: 25.262
radius earth: 0.338
sys num planets: 3

About PSR B1257+12 b

PSR B1257+12 b is a common exoplanet. It lies about 1,956.9 light-years from Earth, spans roughly 0.34 Earth radii, weighs about 0.02 Earth masses and completes an orbit every 25.26 days.

One of at least 3 planets orbiting its star.

How to see it

Like any astronomical target, PSR B1257+12 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 B1257+12 b is a common exoplanet

PSR B1257+12 b scores 21 points on Spacedle's rarity scale, which places it in the common tier. Another 3 points would lift it into a rarer tier.

That score comes from 3 science badges — Confirmed exoplanet, Multi-planet system 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.