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Trans-Neptunian object

500877

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500877 (2013 JE64)

500877 is a trans-Neptunian object in the Trans-Neptunian object orbit class. Its orbit takes it from 34.07 AU to 61.16 AU from the Sun; one orbit takes 328.6 years. Discovered 7 May 2013 by Outer Solar System Origins Survey. Orbit from the JPL solution of 14 April 2021.

Where is it now

Distance from Sun
38.947 AU
True anomaly
64.24°
Distance from Earth
39.621 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 500877 — 38.947 AU from the Sun 500877
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 500877 is 39.621 AU from Earth today (5.5 light-hours).

In the sky

Right ascension
17h 13m 15s
Declination
-19° 14′ 27″
Constellation
Ophiuchus
Distance from Earth
39.62 AU
Elongation from the Sun
46.57° — 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
47.617 AU
Eccentricity
0.2845
Inclination
8.35°
Orbital period
328.6 years
Perihelion
34.07 AU
Aphelion
61.163 AU
Longitude of ascending node
107.04°
Argument of periapsis
88.48°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 12,874.1 LD
33.0808 AU
Tisserand (Jupiter)
5.848

Orbit quality

Orbit reasonably well determined (uncertainty code 3).

Observations used
39
Data arc
6.16 years
First observed
9 April 2013
Last observed
6 June 2019
Residual RMS
0.14 ″
Solution · Otto Matic
14 April 2021

Visual & observation

Absolute magnitude (H)
8.31

Discovery & classification

Discovered by
Outer Solar System Origins Survey
Discovery date
7 May 2013
Discovery site
Mauna Kea

Also known as 2013 JE64

TNO

Sources