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Trans-Neptunian object

530231

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530231 (2011 BV163)

Where is it now

Distance from Sun
39.644 AU
True anomaly
0.29°
Distance from Earth
40.129 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 530231 — 39.644 AU from the Sun 530231
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 530231 is 40.129 AU from Earth today (5.6 light-hours).

In the sky

Right ascension
10h 05m 43s
Declination
+14° 52′ 51″
Constellation
Leo
Distance from Earth
40.12 AU
Elongation from the Sun
60.77° — well clear of the Sun

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
44.423 AU
Eccentricity
0.1076
Inclination
4.53°
Orbital period
296.1 years
Perihelion
39.644 AU
Aphelion
49.202 AU
Longitude of ascending node
105.51°
Argument of periapsis
41.23°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 15,044.4 LD
38.6575 AU
Tisserand (Jupiter)
5.909

Orbit quality

Orbit very well determined (uncertainty code 2).

Observations used
126
Data arc
22.98 years
First observed
9 January 2002
Last observed
1 January 2025
Residual RMS
0.72 ″
Solution · Otto Matic
13 February 2025

Physical properties

Rotation period
2.5 hours

Visual & observation

Absolute magnitude (H)
6.66

Discovery & classification

Discovered by
Pan-STARRS 1
Discovery date
30 January 2011
Discovery site
Haleakala

Also known as 2011 BV163

TNO

Sources