About Dysnomia
Dysnomia is an uncommon moon.
It orbits about 67.78 AU from the Sun — roughly 67.8 times Earth's distance.
Uncommon moon 30 EP
Dysnomia
Position computed live · planets
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Live ephemeris
This object moves — fetching its current position…
Score breakdown
· 3 badgesUncommon 34 pts → Rare
- Moon +16
- Has a proper name +8
- Tidally locked +6
Total score 30
4 more points to reach Rare.
Badges
- Moon · +16
- Has a proper name · +8
- Tidally locked · +6
Trivia
Hard to believe
- Round under its own weight. Big enough that its own gravity has pulled it into a sphere — most of its neighbours are potato-shaped rubble.
What it actually is
- Its address. It orbits about 67.78 AU from the Sun — roughly 67.8 times Earth's distance.
- A lopsided orbit. Its path is distinctly off-centre: it swings between 37.91 and 97.65 AU from the Sun, so its seasons are driven as much by distance as by tilt.
- Off the beaten plane. Its orbit is tilted 44° out of the flat plane the planets share — half of every lap is spent above the others, half below.
- Around its planet. It circles its planet at a distance of 37.3 thousand km — about 10% of the Earth–Moon gap — coming right round once every 15.8 days.
Sense of scale
- Against Earth. It is only 5% of Earth's width — you could pack about 8937 of it inside our planet.
- Against our Moon. Smaller than our own Moon — about 18% of its width.
- Ground to cover. Its whole surface adds up to about 1.2 million km² — about 1% of Earth's dry land.
Properties
- color
- #8d8880
- diameter km
- 614
- name
- Dysnomia
- named
- yes
- radius km
- 307
- tidally locked
- yes
How to see it
Like any astronomical target, Dysnomia 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. Because it moves against the background stars, the live position panel on this page tracks where it is right now. The visibility panel above works out tonight's viewing window for your saved location.
Why Dysnomia is an uncommon moon
Dysnomia scores 30 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 4 points would lift it into a rarer tier.
That score comes from 3 science badges — Moon, Has a proper name and Tidally locked — 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.