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Trans-Neptunian object

2016 RR105

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(2016 RR105)

Where is it now

Distance from Sun
42.056 AU
True anomaly
112.46°
Distance from Earth
41.112 AU
As of
17 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 2016 RR105 — 42.056 AU from the Sun 2016 RR105
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2016 RR105 is 41.112 AU from Earth today (5.7 light-hours).

In the sky

Right ascension
00h 22m 33s
Declination
+00° 46′ 29″
Constellation
Pisces
Distance from Earth
41.12 AU
Elongation from the Sun
160.48° — 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
40.838 AU
Eccentricity
0.1025
Inclination
17.02°
Orbital period
261 years
Perihelion
36.653 AU
Aphelion
45.023 AU
Longitude of ascending node
181.05°
Argument of periapsis
72.65°
Epoch · J2000
2457627.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 13,885.8 LD
35.6804 AU
Tisserand (Jupiter)
5.457

Orbit quality

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

Observations used
15
Data arc
37 days
First observed
1 August 2016
Last observed
7 September 2016
Residual RMS
0.2 ″
Solution · Otto Matic
15 August 2024

Visual & observation

Absolute magnitude (H)
9.38

Discovery & classification

TNO

Sources