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Trans-Neptunian object

2003 TJ58

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(2003 TJ58)

Where is it now

Distance from Sun
41.983 AU
True anomaly
51.19°
Distance from Earth
41.745 AU
As of
21 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 — 0.995 AU from the Sun Earth 2003 TJ58 — 41.983 AU from the Sun 2003 TJ58
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2003 TJ58 is 41.745 AU from Earth today (5.8 light-hours).

In the sky

Right ascension
07h 06m 09s
Declination
+23° 27′ 22″
Constellation
Gemini
Distance from Earth
41.73 AU
Elongation from the Sun
104.12° — 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
44.744 AU
Eccentricity
0.0909
Inclination
0.96°
Orbital period
299.3 years
Perihelion
40.677 AU
Aphelion
48.811 AU
Longitude of ascending node
37.34°
Argument of periapsis
15.29°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 15,445.3 LD
39.6876 AU
Tisserand (Jupiter)
5.956

Orbit quality

Orbit reasonably well determined (uncertainty code 4).

Observations used
55
Data arc
17.19 years
First observed
3 October 2003
Last observed
9 December 2020
Residual RMS
0.25 ″
Solution · Otto Matic
14 April 2021

Visual & observation

Absolute magnitude (H)
7.51

Discovery & classification

TNO

Sources