About J1840-0643
J1840-0643 is a rare pulsar. It spins once every 35.578 ms, has a dispersion measure of 494 pc cm⁻³ and carries a surface magnetic field around 1.86×10^9 G.
It whirls around 28.1 times every second.
Rare pulsar 42 EP
J1840-0643
RA 280.0373° · Dec -6.7267° · pulsar
Score breakdown
· 3 badgesRare 46 pts → Epic
- Pulsar +22
- Binary pulsar +12
- Deeply embedded (high DM) +8
Total score 42
4 more points to reach Epic.
Badges
- Pulsar · +22
- Binary pulsar · +12
- Deeply embedded (high DM) · +8
Trivia
By the numbers
- Spin. It whirls around 28.1 times every second.
- Density. A sugar-cube of its core would weigh about a billion tonnes.
Properties
- binary
- yes
- bsurf
- 1864685643
- dm
- 494
- name
- J1840-0643
- period ms
- 35.5779
How to see it
Like any astronomical target, J1840-0643 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 J1840-0643 is a rare pulsar
J1840-0643 scores 42 points on Spacedle's rarity scale, which places it in the rare tier. Another 4 points would lift it into a rarer tier.
That score comes from 3 science badges — Pulsar, Binary pulsar and Deeply embedded (high DM) — 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.