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Comet

PANSTARRS

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C/2016 T3 (PANSTARRS)

PANSTARRS is a comet in the Comet orbit class. Its orbit takes it from 2.65 AU to 282.05 AU from the Sun; one orbit takes 1,698.4 years. Orbit from the JPL solution of 15 April 2021.

Where is it now

Distance from Sun
21.766 AU
True anomaly
140.64°
Distance from Earth
22.554 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 — 21.766 AU from the Sun PANSTARRS
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. PANSTARRS is 22.554 AU from Earth today (3.1 light-hours).

In the sky

Right ascension
16h 14m 56s
Declination
-30° 19′ 15″
Constellation
Scorpius
Distance from Earth
22.57 AU
Elongation from the Sun
36.07° — near the Sun — look low at dusk or dawn

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
142.349 AU
Eccentricity
0.9814
Inclination
22.68°
Orbital period
1,698.4 years
Perihelion
2.649 AU
Aphelion
282.049 AU
Longitude of ascending node
271.75°
Argument of periapsis
194.68°
Epoch · J2000
2457929.5
Orbit class · COM
Comet
Earth MOID · 650.2 LD
1.6708 AU
Tisserand (Jupiter)
1.89

Orbit quality

Observations used
436
Data arc
555 days
First observed
10 October 2016
Last observed
18 April 2018
Residual RMS
0.65 ″
Solution · Otto Matic
15 April 2021

Visual & observation

Absolute magnitude (H)
13.7
Total magnitude M₁ · K₁ 4.8
13.7

Discovery & classification

Also known as 2016 T3

Named

Sources