Skip to content
Public Universe
Trans-Neptunian object

2015 JO13

Add to an observing list or journal →

(2015 JO13)

Where is it now

Distance from Sun
31.523 AU
True anomaly
12.1°
Distance from Earth
32.359 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 2015 JO13 — 31.523 AU from the Sun 2015 JO13
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2015 JO13 is 32.359 AU from Earth today (4.5 light-hours).

In the sky

Right ascension
15h 57m 07s
Declination
-15° 00′ 55″
Constellation
Libra
Distance from Earth
32.37 AU
Elongation from the Sun
31.49° — 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
44.681 AU
Eccentricity
0.2981
Inclination
16.68°
Orbital period
298.7 years
Perihelion
31.362 AU
Aphelion
58.001 AU
Longitude of ascending node
79.82°
Argument of periapsis
148.56°
Epoch · J2000
2457161.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 11,816.7 LD
30.3636 AU
Tisserand (Jupiter)
5.475

Orbit quality

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

Observations used
11
Data arc
8 days
First observed
15 May 2015
Last observed
23 May 2015
Residual RMS
0.03 ″
Solution · Otto Matic
14 February 2025

Visual & observation

Absolute magnitude (H)
8.91

Discovery & classification

TNO

Sources