← Back to dex - Centaur: adrift between the giants +20
- Large body (100-500 km) +12
- Darker than charcoal +10
- Notably bright (low H) +8
- Kuiper-belt object +5
- Catalogue designation only +0
Total score 55
23 more points to reach Anomaly.
Badges
- ❄️ Kuiper-belt object · +5
- 🗿 Large body (100-500 km) · +12
- 💡 Notably bright (low H) · +8
- 🔢 Catalogue designation only
- 🦌 Centaur: adrift between the giants · +20
- 🕶️ Darker than charcoal · +10
✨ Trivia
What it actually is
- 🛸 Its orbit family. A centaur, wandering between the orbits of Jupiter and Neptune on a path nothing can stabilise. Half asteroid and half comet, and gone from this orbit within a few million years.
- 🌞 Closest approach. At its nearest it comes within 14.98 AU of the Sun — inside the orbit of Uranus.
- 🔁 One lap. A single orbit around the Sun takes it about 90.9 years.
- 🥏 How far it roams. Its orbit swings between 14.98 and 25.46 AU from the Sun.
Sense of scale
- 🧱 Sense of scale. In everyday terms it is about 5.5× the length of Manhattan island.
- 🚶 Walk around it. Walking its equator at a steady pace, eight hours a day, would take about 9.3 days.
By the numbers
- 📐 Size. Roughly 118 km across.
What's in a name
- 🔢 Designation. Known only by its catalogue designation — no name yet.
Properties
- albedo
- 0.046
- aphelion au
- 25.46
- designation
- 136204
- diameter km
- 118
- eccentricity
- 0.2592
- full name
- 136204 (2003 WL7)
- h mag
- 8.73
- inclination
- 11.16
- mean motion deg day
- 0.0108
- moid au
- 14
- name
- (136204) 2003 WL7
- number only
- yes
- orbit class
- CEN
- perihelion au
- 14.982
- rotation period h
- 8.24
- semi major au
- 20.22
About (136204) 2003 WL7
(136204) 2003 WL7 is an epic kbo. It swings within 14.982 AU of the Sun at perihelion.
A centaur, wandering between the orbits of Jupiter and Neptune on a path nothing can stabilise. Half asteroid and half comet, and gone from this orbit within a few million years.
How to see it
Like any astronomical target, (136204) 2003 WL7 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 (136204) 2003 WL7 is an epic kbo
(136204) 2003 WL7 scores 55 points on Spacedle's rarity scale, which places it in the epic tier. Another 23 points would lift it into a rarer tier.
That score comes from 6 science badges — Kuiper-belt object, Large body (100-500 km), Notably bright (low H), Catalogue designation only, Centaur: adrift between the giants and Darker than charcoal — 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.