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Comet

PANSTARRS

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C/2013 P4 (PANSTARRS)

PANSTARRS is a comet in the Chiron-type comet orbit class. Its orbit takes it from 5.97 AU to 23.58 AU from the Sun; one orbit takes 56.78 years. Orbit from the JPL solution of 15 April 2021.

Where is it now

Distance from Sun
17.716 AU
True anomaly
140.88°
Distance from Earth
18.228 AU
As of
24 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 PANSTARRS — 17.716 AU from the Sun PANSTARRS
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. PANSTARRS is 18.228 AU from Earth today (2.5 light-hours).

In the sky

Right ascension
10h 16m 48s
Declination
+06° 24′ 32″
Constellation
Leo
Distance from Earth
18.22 AU
Elongation from the Sun
58.04° — near the Sun — look low at dusk or dawn

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
14.772 AU
Eccentricity
0.5961
Inclination
4.26°
Orbital period
56.78 years
Perihelion
5.967 AU
Aphelion
23.577 AU
Longitude of ascending node
256.61°
Argument of periapsis
113.56°
Epoch · J2000
2456851.5
Orbit class · CTc
Chiron-type comet
Earth MOID · 1,934.1 LD
4.9699 AU
Tisserand (Jupiter)
3.051

Orbit quality

Orbit reasonably well determined (uncertainty code 3).

Observations used
229
Data arc
821 days
First observed
15 August 2013
Last observed
14 November 2015
Residual RMS
0.54 ″
Solution · Otto Matic
15 April 2021

Visual & observation

Absolute magnitude (H)
6.9
Total magnitude M₁ · K₁ 10.8
6.9

Discovery & classification

Also known as 2013 P4

Named

Sources