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Solar
Trans-Neptunian object

2010 TT191

(2010 TT191)

Where is it now

Distance from Sun
32.189 AU
True anomaly
188.42°
Distance from Earth
31.936 AU
As of
2 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 — 1.001 AU from the Sun Earth 2010 TT191 — 32.189 AU from the Sun 2010 TT191
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2010 TT191 is 31.936 AU from Earth today (4.4 light-hours).

In the sky

Right ascension
05h 41m 42s
Declination
+22° 16′ 22″
Constellation
Taurus
Distance from Earth
31.92 AU
Elongation from the Sun
104.43° — 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's up after dark, 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
30.25 AU
Eccentricity
0.0649
Inclination
4.27°
Orbital period
166.4 years
Perihelion
28.287 AU
Aphelion
32.213 AU
Longitude of ascending node
249.26°
Argument of periapsis
6.39°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 10,613.7 LD
27.2725 AU
Tisserand (Jupiter)
4.971

Orbit quality

Orbit reasonably well determined (uncertainty code 3).

Observations used
24
Data arc
25.22 years
First observed
14 October 1999
Last observed
31 December 2024
Residual RMS
0.5 ″
Solution · Otto Matic
11 February 2025

Visual & observation

Absolute magnitude (H)
7.93

Discovery & classification

TNO

Sources