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Trans-Neptunian object

87555

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87555 (2000 QB243)

Where is it now

Distance from Sun
35.738 AU
True anomaly
126.24°
Distance from Earth
34.746 AU
As of
15 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 — 0.997 AU from the Sun Earth 87555 — 35.738 AU from the Sun 87555
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 87555 is 34.746 AU from Earth today (4.8 light-hours).

In the sky

Right ascension
01h 07m 51s
Declination
+13° 02′ 26″
Constellation
Pisces
Distance from Earth
34.75 AU
Elongation from the Sun
174.15° — near opposition — up most of the night

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
34.859 AU
Eccentricity
0.5612
Inclination
6.79°
Orbital period
205.8 years
Perihelion
15.297 AU
Aphelion
54.421 AU
Longitude of ascending node
330.25°
Argument of periapsis
284.38°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 5,561.2 LD
14.2899 AU
Tisserand (Jupiter)
4.404

Orbit quality

Orbit very well determined (uncertainty code 2).

Observations used
83
Data arc
19.01 years
First observed
25 August 2000
Last observed
31 August 2019
Residual RMS
0.68 ″
Solution · Otto Matic
13 April 2021

Visual & observation

Absolute magnitude (H)
8.6

Discovery & classification

Discovered by
Deep Ecliptic Survey
Discovery date
25 August 2000
Discovery site
Cerro Tololo

Also known as 2000 QB243

TNO

Sources