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Trans-Neptunian object

2002 TD301

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(2002 TD301)

Where is it now

Distance from Sun
43.37 AU
True anomaly
217.86°
Distance from Earth
42.549 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 2002 TD301 — 43.37 AU from the Sun 2002 TD301
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2002 TD301 is 42.549 AU from Earth today (5.9 light-hours).

In the sky

Right ascension
03h 57m 01s
Declination
+19° 26′ 53″
Constellation
Taurus
Distance from Earth
42.54 AU
Elongation from the Sun
145.96° — 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
43.367 AU
Eccentricity
0.0001
Inclination
1.37°
Orbital period
285.6 years
Perihelion
43.363 AU
Aphelion
43.371 AU
Longitude of ascending node
104.35°
Argument of periapsis
98.22°
Epoch · J2000
2452554.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 16,480.6 LD
42.3477 AU
Tisserand (Jupiter)
5.892

Orbit quality

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

Observations used
26
Data arc
24 hours
First observed
6 October 2002
Last observed
7 October 2002
Residual RMS
0.4 ″
Solution · Otto Matic
14 April 2021

Visual & observation

Absolute magnitude (H)
10.59

Discovery & classification

TNO

Sources