About Xewioso
Xewioso is an uncommon kbo. It swings within 28.501 AU of the Sun at perihelion.
A trans-Neptunian object from the Kuiper Belt, out where the Sun is little more than the brightest star in a very dark sky.
Uncommon kbo 33 EP
Xewioso
Position computed live · sbdb
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Live ephemeris
This object moves — fetching its current position…
Score breakdown
· 4 badgesUncommon 34 pts → Rare
- Trans-Neptunian object +12
- Notably bright (low H) +8
- Has a proper name +8
- Kuiper-belt object +5
Total score 33
1 more point to reach Rare.
Badges
- Kuiper-belt object · +5
- Notably bright (low H) · +8
- Has a proper name · +8
- Trans-Neptunian object · +12
Trivia
What it actually is
- Its orbit family. A trans-Neptunian object from the Kuiper Belt, out where the Sun is little more than the brightest star in a very dark sky.
- Closest approach. At its nearest it comes within 28.5 AU of the Sun — inside the orbit of Neptune.
- One lap. A single orbit around the Sun takes it about 231 years.
- How far it roams. Its orbit swings between 28.5 and 46.86 AU from the Sun.
Sense of scale
- Sense of scale. In everyday terms it is about 17.7× the length of Manhattan island.
- Walk around it. Walking its equator at a steady pace, eight hours a day, would take about 30 days.
By the numbers
- Estimated size. Nobody has measured its size directly. Assuming it reflects light like a typical asteroid, its brightness implies something roughly 382 km across.
What's in a name
- Named. Notable enough to have earned a proper name, not just a catalogue number.
Properties
- aphelion au
- 46.85
- designation
- 78799
- eccentricity
- 0.2435
- full name
- 78799 Xewioso (2002 XW93)
- h mag
- 4.84
- inclination
- 14.34
- mean motion deg day
- 0.0043
- moid au
- 27.5
- name
- Xewioso
- named
- yes
- orbit class
- TNO
- perihelion au
- 28.501
- semi major au
- 37.68
How to see it
Like any astronomical target, Xewioso 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 Xewioso is an uncommon kbo
Xewioso scores 33 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 1 point would lift it into a rarer tier.
That score comes from 4 science badges — Kuiper-belt object, Notably bright (low H), Has a proper name and Trans-Neptunian object — 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.