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Trans-Neptunian object

2002 PY170

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(2002 PY170)

Where is it now

Distance from Sun
43.748 AU
True anomaly
125.37°
Distance from Earth
42.868 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 2002 PY170 — 43.748 AU from the Sun 2002 PY170
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2002 PY170 is 42.868 AU from Earth today (5.9 light-hours).

In the sky

Right ascension
23h 57m 53s
Declination
-03° 20′ 24″
Constellation
Pisces
Distance from Earth
42.87 AU
Elongation from the Sun
151.45° — 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
43.017 AU
Eccentricity
0.0304
Inclination
3.02°
Orbital period
282.1 years
Perihelion
41.708 AU
Aphelion
44.326 AU
Longitude of ascending node
110.88°
Argument of periapsis
122.59°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 15,838.7 LD
40.6983 AU
Tisserand (Jupiter)
5.861

Orbit quality

Orbit reasonably well determined (uncertainty code 5).

Observations used
17
Data arc
23.13 years
First observed
5 August 2002
Last observed
20 September 2025
Residual RMS
0.17 ″
Solution · Otto Matic
22 September 2025

Visual & observation

Absolute magnitude (H)
8.02

Discovery & classification

TNO

Sources