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Comet

PANSTARRS

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P/2023 S1 (PANSTARRS)

Where is it now

Distance from Sun
3.999 AU
True anomaly
115.26°
Distance from Earth
4.761 AU
As of
22 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.

Orbit of Mercury Orbit of Venus Orbit of Mars Sun Earth — 0.995 AU from the Sun Earth PANSTARRS — 3.999 AU from the Sun PANSTARRS
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. PANSTARRS is 4.761 AU from Earth today (39.6 light-minutes).

In the sky

Right ascension
16h 06m 01s
Declination
-27° 54′ 18″
Constellation
Scorpius
Distance from Earth
4.77 AU
Elongation from the Sun
35.66° — 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
3.846 AU
Eccentricity
0.3188
Inclination
9.16°
Orbital period
7.54 years
Perihelion
2.62 AU
Aphelion
5.072 AU
Longitude of ascending node
317.29°
Argument of periapsis
180.27°
Epoch · J2000
2460614.5
Orbit class · JFc
Jupiter-family comet (P < 20 y)
Earth MOID · 635.3 LD
1.6324 AU
Tisserand (Jupiter)
2.962

Orbit quality

Orbit very well determined (uncertainty code 2).

Observations used
1,928
Data arc
2.67 years
First observed
15 September 2023
Last observed
18 May 2026
Residual RMS
0.48 ″
Solution · Otto Matic
22 May 2026

Visual & observation

Absolute magnitude (H)
10.3
Total magnitude M₁ · K₁ 11.5
10.3

Discovery & classification

Also known as 2023 S1

Named

Close approaches 8 on record

When (UTC) Body Distance Lunar distances Relative speed
2080-03-13 20:27:00 Juptr 1.0615 AU 413.1 LD 6.2 km/s
2084-03-12 07:55:00 Juptr 1.9828 AU 771.7 LD 4.8 km/s
2103-11-15 03:46:00 Juptr 0.7721 AU 300.5 LD 5.4 km/s
2108-05-12 15:18:00 Juptr 1.7551 AU 683.0 LD 4.7 km/s
2136-08-07 21:54:00 Juptr 1.9172 AU 746.1 LD 3.4 km/s
2140-12-13 11:48:00 Juptr 1.1009 AU 428.5 LD 5.2 km/s

Next ten from today. 1 lunar distance = 384,400 km. Source: JPL close-approach data.

Sources