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Trans-Neptunian object

487581

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487581 (2015 BE519)

487581 is a trans-Neptunian object in the Trans-Neptunian object orbit class. Its orbit takes it from 44.6 AU to 51.13 AU from the Sun; one orbit takes 331.2 years. Discovered 27 April 2006 by Deep Ecliptic Survey. Orbit from the JPL solution of 2 July 2025.

Where is it now

Distance from Sun
47.691 AU
True anomaly
90.85°
Distance from Earth
48.468 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 487581 — 47.691 AU from the Sun 487581
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 487581 is 48.468 AU from Earth today (6.7 light-hours).

In the sky

Right ascension
11h 56m 50s
Declination
+10° 29′ 47″
Constellation
Leo
Distance from Earth
48.46 AU
Elongation from the Sun
39.01° — near the Sun — look low at dusk or dawn

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
47.865 AU
Eccentricity
0.0682
Inclination
24.7°
Orbital period
331.2 years
Perihelion
44.601 AU
Aphelion
51.13 AU
Longitude of ascending node
153.08°
Argument of periapsis
292.3°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 17,004.4 LD
43.6938 AU
Tisserand (Jupiter)
5.607

Orbit quality

Orbit very well determined (uncertainty code 2).

Observations used
251
Data arc
22.31 years
First observed
7 December 2002
Last observed
31 March 2025
Residual RMS
0.65 ″
Solution · Otto Matic
2 July 2025

Visual & observation

Absolute magnitude (H)
5.58

Discovery & classification

Discovered by
Deep Ecliptic Survey
Discovery date
27 April 2006
Discovery site
Cerro Tololo

Also known as 2015 BE519

TNO

Sources