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Trans-Neptunian object

2013 SW100

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(2013 SW100)

Where is it now

Distance from Sun
42.596 AU
True anomaly
69.22°
Distance from Earth
41.602 AU
As of
18 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 2013 SW100 — 42.596 AU from the Sun 2013 SW100
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2013 SW100 is 41.602 AU from Earth today (5.8 light-hours).

In the sky

Right ascension
01h 49m 25s
Declination
+10° 10′ 25″
Constellation
Pisces
Distance from Earth
41.6 AU
Elongation from the Sun
177.1° — 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
42.779 AU
Eccentricity
0.0117
Inclination
1.22°
Orbital period
279.8 years
Perihelion
42.279 AU
Aphelion
43.278 AU
Longitude of ascending node
154.01°
Argument of periapsis
165.74°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 16,059.3 LD
41.2653 AU
Tisserand (Jupiter)
5.855

Orbit quality

Orbit reasonably well determined (uncertainty code 4).

Observations used
36
Data arc
4.07 years
First observed
5 August 2013
Last observed
30 August 2017
Residual RMS
0.22 ″
Solution · Otto Matic
15 April 2021

Visual & observation

Absolute magnitude (H)
8.2

Discovery & classification

TNO

Sources