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Trans-Neptunian object

525596

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525596 (2005 JR179)

525596 is a trans-Neptunian object in the Trans-Neptunian object orbit class. Its orbit takes it from 41.26 AU to 52.28 AU from the Sun; one orbit takes 319.9 years. Discovered 11 May 2005 by Buie, M. W.. Orbit from the JPL solution of 14 April 2021.

Where is it now

Distance from Sun
47.574 AU
True anomaly
105.03°
Distance from Earth
48.483 AU
As of
24 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 525596 — 47.574 AU from the Sun 525596
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 525596 is 48.483 AU from Earth today (6.7 light-hours).

In the sky

Right ascension
15h 31m 40s
Declination
-18° 03′ 31″
Constellation
Libra
Distance from Earth
48.49 AU
Elongation from the Sun
22.96° — 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
46.769 AU
Eccentricity
0.1178
Inclination
3.75°
Orbital period
319.9 years
Perihelion
41.258 AU
Aphelion
52.281 AU
Longitude of ascending node
71.08°
Argument of periapsis
59.33°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 15,673.6 LD
40.2742 AU
Tisserand (Jupiter)
6.053

Orbit quality

Orbit reasonably well determined (uncertainty code 3).

Observations used
41
Data arc
12.92 years
First observed
11 May 2005
Last observed
12 April 2018
Residual RMS
0.83 ″
Solution · Otto Matic
14 April 2021

Visual & observation

Absolute magnitude (H)
6.62

Discovery & classification

Discovered by
Buie, M. W.
Discovery date
11 May 2005
Discovery site
Cerro Tololo

Also known as 2005 JR179

TNO

Sources