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Comet

WISE-Lemmon

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453P/WISE-Lemmon

Where is it now

Distance from Sun
7.447 AU
True anomaly
152.33°
Distance from Earth
8.053 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 WISE-Lemmon — 7.447 AU from the Sun WISE-Lemmon
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. WISE-Lemmon is 8.053 AU from Earth today (1.1 light-hours).

In the sky

Right ascension
16h 54m 43s
Declination
-39° 24′ 57″
Constellation
Scorpius
Distance from Earth
8.06 AU
Elongation from the Sun
49.01° — 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
5.457 AU
Eccentricity
0.5824
Inclination
27.07°
Orbital period
12.75 years
Perihelion
2.279 AU
Aphelion
8.635 AU
Longitude of ascending node
42.9°
Argument of periapsis
70.82°
Epoch · J2000
2459864.5
Orbit class · JFc
Jupiter-family comet (P < 20 y)
Earth MOID · 561.7 LD
1.4433 AU
Tisserand (Jupiter)
2.436

Orbit quality

Orbit very well determined (uncertainty code 1).

Observations used
324
Data arc
13.3 years
First observed
28 January 2010
Last observed
17 May 2023
Residual RMS
0.64 ″
Solution · Otto Matic
6 August 2023

Visual & observation

Absolute magnitude (H)
11.4
Total magnitude M₁ · K₁ 16.8
11.4

Discovery & classification

Also known as 453P · 453P/2010 BN109 · 453P/2022 V1

Named

Close approaches 5 on record

When (UTC) Body Distance Lunar distances Relative speed
2034-09-12 08:02:00 Juptr 1.3642 AU 530.9 LD 11.5 km/s
2089-05-11 03:26:00 Juptr 0.9903 AU 385.4 LD 8.4 km/s
2101-09-01 08:27:00 Juptr 0.9034 AU 351.6 LD 11.5 km/s

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

Sources