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Trans-Neptunian object

2023 PJ5

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(2023 PJ5)

2023 PJ5 is a trans-Neptunian object in the Trans-Neptunian object orbit class. Its orbit takes it from 31.9 AU to 63.08 AU from the Sun; one orbit takes 327.3 years. Orbit from the JPL solution of 7 October 2026.

Where is it now

Distance from Sun
31.996 AU
True anomaly
9.07°
Distance from Earth
31.957 AU
As of
25 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 — 0.994 AU from the Sun Earth 2023 PJ5 — 31.996 AU from the Sun 2023 PJ5
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2023 PJ5 is 31.957 AU from Earth today (4.4 light-hours).

In the sky

Right ascension
20h 23m 18s
Declination
-18° 48′ 41″
Constellation
Capricornus
Distance from Earth
31.96 AU
Elongation from the Sun
91.19° — 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
47.488 AU
Eccentricity
0.3283
Inclination
3.05°
Orbital period
327.3 years
Perihelion
31.897 AU
Aphelion
63.079 AU
Longitude of ascending node
135.62°
Argument of periapsis
160.72°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 12,017.8 LD
30.8805 AU
Tisserand (Jupiter)
5.809

Orbit quality

Orbit reasonably well determined (uncertainty code 3).

Observations used
25
Data arc
17.13 years
First observed
13 June 2008
Last observed
29 July 2025
Residual RMS
0.22 ″
Solution · Otto Matic
7 October 2026

Visual & observation

Absolute magnitude (H)
7.61

Discovery & classification

TNO

Sources