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Trans-Neptunian object

2000 SP331

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(2000 SP331)

Where is it now

Distance from Sun
39.452 AU
True anomaly
40.5°
Distance from Earth
39.184 AU
As of
19 October 2026

Two-body Kepler propagation — accurate to ~0.1% for major planets over decades, less so for highly-perturbed bodies. Use JPL Horizons for high precision.

Sun Earth — 0.996 AU from the Sun Earth 2000 SP331 — 39.452 AU from the Sun 2000 SP331
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2000 SP331 is 39.184 AU from Earth today (5.4 light-hours).

In the sky

Right ascension
06h 49m 09s
Declination
+21° 39′ 59″
Constellation
Gemini
Distance from Earth
39.18 AU
Elongation from the Sun
105.19° — well clear of the Sun

Favours the northern hemisphere; low or below the horizon from far south.

From your location

See how high it is right now, whether it is up after civil twilight, and when it rises and sets where you are.

How do I find my coordinates?

Google Maps on a computer

  1. Right-click the spot where you'll be observing.
  2. The first line of the menu is the coordinates, e.g. 51.50722, -0.12758 — click it and they're copied.
  3. Paste them above.

Google Maps on a phone

  1. Press and hold the spot to drop a pin.
  2. The coordinates appear in the search bar (or on the pin's card) — tap to copy, then paste above.

A full Google Maps link works too, but the short maps.app.goo.gl share links don't carry coordinates — copy the numbers instead. We round to about a kilometre; that's all the sky calculation needs.

Know your what3words address? Paste it, e.g. ///filled.count.soap. This is optional — the three words are sent to what3words to convert them, and we don't store the address or the result.

Your location stays in your browser and is sent only for this calculation. Using a what3words address is optional; if you do, the three words go to what3words to be converted and we don't record them. Set a location first, then you can save an email alert for this object. See our privacy policy.

Two-body approximation, good to about a degree for the planets — enough to find the constellation and know whether it is up.

Orbital elements

Semi-major axis
43.013 AU
Eccentricity
0.1034
Inclination
2.94°
Orbital period
282.1 years
Perihelion
38.566 AU
Aphelion
47.459 AU
Longitude of ascending node
125.73°
Argument of periapsis
293.76°
Epoch · J2000
2451811.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 14,624.8 LD
37.5793 AU
Tisserand (Jupiter)
5.833

Orbit quality

Orbit very uncertain — the object may be effectively lost (uncertainty code 9).

Observations used
6
Data arc
24 hours
First observed
23 September 2000
Last observed
24 September 2000
Residual RMS
0.04 ″
Solution · Otto Matic
14 April 2021

Visual & observation

Absolute magnitude (H)
8.03

Discovery & classification

TNO

Sources