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Trans-Neptunian object

2013 TK228

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(2013 TK228)

2013 TK228 is a trans-Neptunian object in the Trans-Neptunian object orbit class. Its orbit takes it from 32.96 AU to 62.53 AU from the Sun; one orbit takes 329.9 years. Orbit from the JPL solution of 15 September 2021.

Where is it now

Distance from Sun
47.748 AU
True anomaly
108.05°
Distance from Earth
46.802 AU
As of
25 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 — 0.994 AU from the Sun Earth 2013 TK228 — 47.748 AU from the Sun 2013 TK228
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2013 TK228 is 46.802 AU from Earth today (6.5 light-hours).

In the sky

Right ascension
00h 51m 08s
Declination
+06° 12′ 03″
Constellation
Pisces
Distance from Earth
46.81 AU
Elongation from the Sun
161.12° — near opposition — up most of the night

Visible from both hemispheres.

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
47.745 AU
Eccentricity
0.3098
Inclination
1.87°
Orbital period
329.9 years
Perihelion
32.956 AU
Aphelion
62.535 AU
Longitude of ascending node
354.14°
Argument of periapsis
272.37°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 12,430.2 LD
31.9401 AU
Tisserand (Jupiter)
5.866

Orbit quality

Orbit reasonably well determined (uncertainty code 5).

Observations used
13
Data arc
4.03 years
First observed
12 October 2013
Last observed
22 October 2017
Residual RMS
0.24 ″
Solution · Otto Matic
15 September 2021

Visual & observation

Absolute magnitude (H)
7.4

Discovery & classification

TNO

Sources