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Trans-Neptunian object

2004 PY111

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(2004 PY111)

Where is it now

Distance from Sun
41.093 AU
True anomaly
31.88°
Distance from Earth
40.344 AU
As of
21 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 — 0.995 AU from the Sun Earth 2004 PY111 — 41.093 AU from the Sun 2004 PY111
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2004 PY111 is 40.344 AU from Earth today (5.6 light-hours).

In the sky

Right ascension
23h 24m 29s
Declination
-11° 41′ 17″
Constellation
Aquarius
Distance from Earth
40.35 AU
Elongation from the Sun
137.96° — well clear of the Sun

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
44.317 AU
Eccentricity
0.0835
Inclination
10.26°
Orbital period
295 years
Perihelion
40.615 AU
Aphelion
48.019 AU
Longitude of ascending node
124.75°
Argument of periapsis
191.98°
Epoch · J2000
2453245.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 15,411.9 LD
39.6018 AU
Tisserand (Jupiter)
5.841

Orbit quality

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

Observations used
4
Data arc
32 days
First observed
12 August 2004
Last observed
13 September 2004
Residual RMS
0.13 ″
Solution · Otto Matic
14 April 2021

Visual & observation

Absolute magnitude (H)
6.58

Discovery & classification

TNO

Sources