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Trans-Neptunian object

2015 BP641

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(2015 BP641)

Where is it now

Distance from Sun
40.195 AU
True anomaly
56.99°
Distance from Earth
40.787 AU
As of
19 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 — 0.996 AU from the Sun Earth 2015 BP641 — 40.195 AU from the Sun 2015 BP641
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2015 BP641 is 40.787 AU from Earth today (5.7 light-hours).

In the sky

Right ascension
10h 06m 25s
Declination
-02° 33′ 06″
Constellation
Sextans
Distance from Earth
40.79 AU
Elongation from the Sun
53.04° — 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
42.853 AU
Eccentricity
0.1013
Inclination
17.93°
Orbital period
280.5 years
Perihelion
38.512 AU
Aphelion
47.193 AU
Longitude of ascending node
201.23°
Argument of periapsis
253.76°
Epoch · J2000
2457007.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 14,622.5 LD
37.5732 AU
Tisserand (Jupiter)
5.554

Orbit quality

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

Observations used
11
Data arc
53 days
First observed
24 November 2014
Last observed
16 January 2015
Residual RMS
0.34 ″
Solution · Otto Matic
5 June 2026

Visual & observation

Absolute magnitude (H)
8.98

Discovery & classification

TNO

Sources