← Back to dex
Rare pulsar 34 EP

J0737-3039B

RA 114.4635° · Dec -30.6613° · pulsar

Loading sky survey…
🌌 View in 3D star map
Tonight’s visibility

Computing the sky for your location…

Score breakdown

· 2 badges
34 pts · Rare
Rare 46 pts → Epic
  • Pulsar +22
  • Binary pulsar +12
Total score 34

12 more points to reach Epic.

Badges

  • Pulsar · +22
  • Binary pulsar · +12

Trivia

By the numbers

  • Spin. It whirls around 0.4 times every second.
  • Density. A sugar-cube of its core would weigh about a billion tonnes.

Properties

binary
yes
bsurf
1591886185000
dm
48.92
name
J0737-3039B
period ms
2773.4608

About J0737-3039B

J0737-3039B is a rare pulsar. It spins once every 2,773.461 ms, has a dispersion measure of 48.92 pc cm⁻³ and carries a surface magnetic field around 1.59×10^12 G.

It whirls around 0.4 times every second.

How to see it

Like any astronomical target, J0737-3039B 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 J0737-3039B is a rare pulsar

J0737-3039B scores 34 points on Spacedle's rarity scale, which places it in the rare tier. Another 12 points would lift it into a rarer tier.

That score comes from 2 science badges — Pulsar and Binary pulsar — 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.

spacedle A daily roll through the real universe. © 2026 spacedle. Buy me a coffee

Sky imagery and survey data courtesy of Aladin Lite & CDS, Strasbourg. Object data from the NASA Exoplanet Archive, JPL Small-Body Database, and the ATNF Pulsar Catalogue.