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Trans-Neptunian object

2016 SW105

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(2016 SW105)

Where is it now

Distance from Sun
39.384 AU
True anomaly
234.64°
Distance from Earth
38.852 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 2016 SW105 — 39.384 AU from the Sun 2016 SW105
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2016 SW105 is 38.852 AU from Earth today (5.4 light-hours).

In the sky

Right ascension
22h 38m 37s
Declination
-34° 55′ 29″
Constellation
Piscis Austrinus
Distance from Earth
38.86 AU
Elongation from the Sun
121.13° — well clear of the Sun

Favours the southern hemisphere; low or below the horizon from far north.

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
36.325 AU
Eccentricity
0.1945
Inclination
30.39°
Orbital period
218.9 years
Perihelion
29.258 AU
Aphelion
43.391 AU
Longitude of ascending node
18.15°
Argument of periapsis
71.91°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 11,051.9 LD
28.3985 AU
Tisserand (Jupiter)
4.614

Orbit quality

Orbit reasonably well determined (uncertainty code 5).

Observations used
19
Data arc
3 years
First observed
22 October 2014
Last observed
21 October 2017
Residual RMS
0.26 ″
Solution · Otto Matic
21 September 2021

Visual & observation

Absolute magnitude (H)
7.73

Discovery & classification

TNO

Sources