Skip to content
Public Universe
Centaur

318875

Add to an observing list or journal →

318875 (2005 TS100)

Where is it now

Distance from Sun
6.524 AU
True anomaly
175.89°
Distance from Earth
7.15 AU
As of
11 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.

Orbit of Mercury Orbit of Venus Orbit of Mars Sun Earth — 0.998 AU from the Sun Earth 318875 — 6.524 AU from the Sun 318875
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 318875 is 7.15 AU from Earth today (59.5 light-minutes).

In the sky

Right ascension
16h 12m 41s
Declination
-27° 08′ 52″
Constellation
Scorpius
Distance from Earth
7.16 AU
Elongation from the Sun
47.43° — near the Sun — look low at dusk or dawn

Favours the southern hemisphere; low or below the horizon from far north.

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
5.594 AU
Eccentricity
0.1669
Inclination
8.52°
Orbital period
13.23 years
Perihelion
4.66 AU
Aphelion
6.527 AU
Longitude of ascending node
23.43°
Argument of periapsis
53.63°
Epoch · J2000
2461200.5
Orbit class · CEN
Centaur
Earth MOID · 1,433.5 LD
3.6834 AU
Tisserand (Jupiter)
2.952

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
234
Data arc
29.3 years
First observed
14 January 1996
Last observed
2 May 2025
Residual RMS
0.52 ″
Solution · Otto Matic
2 July 2025

Visual & observation

Absolute magnitude (H)
13.8

Discovery & classification

Discovered by
Spacewatch
Discovery date
7 October 2005
Discovery site
Kitt Peak

Also known as 2005 TS100 · 2006 WW63

Centaur

Close approaches 10 on record

When (UTC) Body Distance Lunar distances Relative speed
2058-06-29 06:21:00 Jupiter 0.026 AU 10.1 LD 8.5 km/s
2058-06-29 06:21:00 Juptr 0.026 AU 10.1 LD 8.5 km/s
2093-07-30 20:47:00 Juptr 1.6782 AU 653.1 LD 7.5 km/s
2114-08-30 07:27:00 Juptr 1.9925 AU 775.4 LD 3.3 km/s
2118-02-05 16:27:00 Juptr 1.4147 AU 550.5 LD 6.7 km/s
2153-08-20 09:46:00 Juptr 0.5092 AU 198.2 LD 4.3 km/s
2164-12-19 21:20:00 Juptr 1.5078 AU 586.8 LD 7.7 km/s

Next ten from today. 1 lunar distance = 384,400 km. Source: JPL close-approach data.

Sources