Skip to content
Public Universe
Comet

Larson

Add to an observing list or journal →

413P/Larson

Where is it now

Distance from Sun
4.432 AU
True anomaly
222.5°
Distance from Earth
3.991 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 — 4.432 AU from the Sun Larson
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. Larson is 3.991 AU from Earth today (33.2 light-minutes).

In the sky

Right ascension
06h 42m 22s
Declination
+36° 21′ 39″
Constellation
Auriga
Distance from Earth
3.98 AU
Elongation from the Sun
110.38° — 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
3.714 AU
Eccentricity
0.4238
Inclination
15.98°
Orbital period
7.16 years
Perihelion
2.14 AU
Aphelion
5.288 AU
Longitude of ascending node
39.06°
Argument of periapsis
185.9°
Epoch · J2000
2458130.5
Orbit class · JFc
Jupiter-family comet (P < 20 y)
Earth MOID · 440.2 LD
1.131 AU
Tisserand (Jupiter)
2.872

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
818
Data arc
8.55 years
First observed
6 January 2014
Last observed
26 July 2022
Residual RMS
0.85 ″
Solution · Otto Matic
31 July 2025

Visual & observation

Absolute magnitude (H)
14
Total magnitude M₁ · K₁ 9
14

Discovery & classification

Also known as 413P · 413P/2014 E1 · 413P/2020 W4

Named

Close approaches 8 on record

When (UTC) Body Distance Lunar distances Relative speed
2048-03-25 05:25:00 Juptr 1.5643 AU 608.8 LD 8.6 km/s
2083-10-20 04:57:00 Juptr 1.5508 AU 603.5 LD 8.5 km/s
2130-03-02 13:28:00 Juptr 1.268 AU 493.5 LD 8.5 km/s
2165-11-21 18:09:00 Juptr 1.9833 AU 771.8 LD 10.6 km/s
2190-08-23 17:45:00 Juptr 1.7014 AU 662.1 LD 8.8 km/s

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

Sources