Skip to content
Public Universe
Comet

Lemmon

Add to an observing list or journal →

P/2023 JN16 (Lemmon)

Where is it now

Distance from Sun
3.036 AU
True anomaly
153.11°
Distance from Earth
3.851 AU
As of
11 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 — 0.998 AU from the Sun Earth Lemmon — 3.036 AU from the Sun Lemmon
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. Lemmon is 3.851 AU from Earth today (32.0 light-minutes).

In the sky

Right ascension
11h 18m 00s
Declination
+06° 17′ 07″
Constellation
Leo
Distance from Earth
3.85 AU
Elongation from the Sun
31.15° — near the Sun — look low at dusk or dawn

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
2.697 AU
Eccentricity
0.1469
Inclination
3.7°
Orbital period
4.43 years
Perihelion
2.3 AU
Aphelion
3.093 AU
Longitude of ascending node
11.89°
Argument of periapsis
352.95°
Epoch · J2000
2460077.5
Orbit class · ETc
Encke-type comet
Earth MOID · 504.9 LD
1.2974 AU
Tisserand (Jupiter)
3.351

Orbit quality

Orbit very well determined (uncertainty code 2).

Observations used
83
Data arc
6.79 years
First observed
18 March 2018
Last observed
31 December 2024
Residual RMS
0.39 ″
Solution · Otto Matic
6 July 2026

Visual & observation

Absolute magnitude (H)
16.3
Total magnitude M₁ · K₁ 4.5
16.3

Discovery & classification

Also known as 2023 JN16

Named

Sources