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Comet

PANSTARRS

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C/2019 A5 (PANSTARRS)

PANSTARRS is a comet in the Halley-type comet orbit class. Its orbit takes it from 6.32 AU to 36.97 AU from the Sun; one orbit takes 100.7 years. Orbit from the JPL solution of 15 April 2021.

Where is it now

Distance from Sun
14.513 AU
True anomaly
111.18°
Distance from Earth
14.748 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 — 14.513 AU from the Sun PANSTARRS
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. PANSTARRS is 14.748 AU from Earth today (2.0 light-hours).

In the sky

Right ascension
17h 56m 43s
Declination
+36° 50′ 34″
Constellation
Hercules
Distance from Earth
14.75 AU
Elongation from the Sun
74.29° — well clear of the Sun

Favours the northern hemisphere; low or below the horizon from far south.

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
21.649 AU
Eccentricity
0.7079
Inclination
67.54°
Orbital period
100.7 years
Perihelion
6.324 AU
Aphelion
36.973 AU
Longitude of ascending node
146.62°
Argument of periapsis
356.04°
Epoch · J2000
2458701.5
Orbit class · HTC
Halley-type comet
Earth MOID · 2,077.2 LD
5.3375 AU
Tisserand (Jupiter)
1.341

Orbit quality

Orbit reasonably well determined (uncertainty code 3).

Observations used
70
Data arc
530 days
First observed
4 January 2019
Last observed
17 June 2020
Residual RMS
0.34 ″
Solution · Otto Matic
15 April 2021

Visual & observation

Absolute magnitude (H)
7.3
Total magnitude M₁ · K₁ 12.8
7.3

Discovery & classification

Also known as 2019 A5

Named

Sources