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Comet

Larson

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382P/Larson

Where is it now

Distance from Sun
6.829 AU
True anomaly
131.07°
Distance from Earth
7.056 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 Larson — 6.829 AU from the Sun Larson
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. Larson is 7.056 AU from Earth today (58.7 light-minutes).

In the sky

Right ascension
09h 08m 52s
Declination
+10° 00′ 47″
Constellation
Cancer
Distance from Earth
7.04 AU
Elongation from the Sun
73.68° — well clear of the Sun

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
6.052 AU
Eccentricity
0.2762
Inclination
7.87°
Orbital period
14.89 years
Perihelion
4.38 AU
Aphelion
7.724 AU
Longitude of ascending node
181.67°
Argument of periapsis
175.51°
Epoch · J2000
2457067.5
Orbit class · JFc
Jupiter-family comet (P < 20 y)
Earth MOID · 1,313.6 LD
3.3754 AU
Tisserand (Jupiter)
2.913

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
543
Data arc
15.28 years
First observed
4 September 2007
Last observed
14 December 2022
Residual RMS
0.66 ″
Solution · Otto Matic
13 February 2025

Visual & observation

Absolute magnitude (H)
7.1
Total magnitude M₁ · K₁ 14
7.1

Discovery & classification

Also known as 382P · 382P/2007 R1 · 382P/2019 K3

Named

Close approaches 12 on record

When (UTC) Body Distance Lunar distances Relative speed
2089-03-21 02:04:00 Juptr 1.1236 AU 437.3 LD 2.2 km/s
2092-02-23 15:29:00 Juptr 0.7604 AU 295.9 LD 3 km/s
2170-06-13 22:50:00 Juptr 1.4015 AU 545.4 LD 2.8 km/s
2175-12-08 18:27:00 Jupiter 0.4398 AU 171.2 LD 3 km/s
2175-12-08 18:27:00 Juptr 0.4398 AU 171.2 LD 3 km/s
2187-11-17 09:18:00 Juptr 0.2906 AU 113.1 LD 4.6 km/s
2187-11-17 09:18:00 Jupiter 0.2906 AU 113.1 LD 4.6 km/s

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

Sources