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Comet

Mueller

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190P/Mueller

Where is it now

Distance from Sun
4.75 AU
True anomaly
132.1°
Distance from Earth
5.428 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 Mueller — 4.75 AU from the Sun Mueller
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. Mueller is 5.428 AU from Earth today (45.1 light-minutes).

In the sky

Right ascension
11h 09m 49s
Declination
+05° 17′ 13″
Constellation
Leo
Distance from Earth
5.42 AU
Elongation from the Sun
43.56° — 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
4.242 AU
Eccentricity
0.5207
Inclination
2.17°
Orbital period
8.74 years
Perihelion
2.033 AU
Aphelion
6.45 AU
Longitude of ascending node
335.55°
Argument of periapsis
50.42°
Epoch · J2000
2457640.5
Orbit class · JFc
Jupiter-family comet (P < 20 y)
Earth MOID · 403.9 LD
1.038 AU
Tisserand (Jupiter)
2.767

Orbit quality

Orbit very well determined (uncertainty code 1).

Observations used
714
Data arc
27.42 years
First observed
14 September 1998
Last observed
14 February 2026
Residual RMS
0.47 ″
Solution · Otto Matic
7 March 2026

Visual & observation

Absolute magnitude (H)
15.5
Total magnitude M₁ · K₁ 6.5
15.5

Discovery & classification

Also known as 190P · 190P/1998 U2 · 190P/2007 O2

Named

Close approaches 11 on record

When (UTC) Body Distance Lunar distances Relative speed
2029-08-06 10:31:00 Juptr 0.9809 AU 381.7 LD 4.4 km/s
2066-01-20 11:37:00 Jupiter 0.2939 AU 114.4 LD 5.6 km/s
2066-01-20 11:37:00 Juptr 0.2939 AU 114.4 LD 5.6 km/s
2098-10-01 15:13:00 Juptr 0.6876 AU 267.6 LD 4.8 km/s
2148-11-12 04:04:00 Jupiter 0.3899 AU 151.7 LD 6.8 km/s
2148-11-12 04:04:00 Juptr 0.3899 AU 151.7 LD 6.8 km/s
2194-01-08 03:07:00 Juptr 0.9364 AU 364.4 LD 7 km/s

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

Sources