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Comet

Attard-Maury

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P/2021 U3 (Attard-Maury)

Where is it now

Distance from Sun
6.371 AU
True anomaly
190.34°
Distance from Earth
7.136 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 Attard-Maury — 6.371 AU from the Sun Attard-Maury
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. Attard-Maury is 7.136 AU from Earth today (59.3 light-minutes).

In the sky

Right ascension
16h 20m 14s
Declination
-09° 14′ 07″
Constellation
Scorpius
Distance from Earth
7.14 AU
Elongation from the Sun
36.62° — 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
4.192 AU
Eccentricity
0.5499
Inclination
69.96°
Orbital period
8.58 years
Perihelion
1.887 AU
Aphelion
6.497 AU
Longitude of ascending node
75.11°
Argument of periapsis
335.21°
Epoch · J2000
2459542.5
Orbit class · JFC
Jupiter-family comet (2 < T_J < 3)
Earth MOID · 368.6 LD
0.947 AU
Tisserand (Jupiter)
1.755

Orbit quality

Orbit reasonably well determined (uncertainty code 5).

Observations used
275
Data arc
99 days
First observed
24 October 2021
Last observed
31 January 2022
Residual RMS
0.62 ″
Solution · Otto Matic
7 June 2022

Visual & observation

Absolute magnitude (H)
16.8
Total magnitude M₁ · K₁ 4.5
16.8

Discovery & classification

Also known as 2021 U3

Named

Close approaches 7 on record

When (UTC) Body Distance Lunar distances Relative speed
2078-09-23 16:06:00 Juptr 1.2134 AU 472.2 LD 12.6 km/s
2114-02-11 17:58:00 Juptr 0.7465 AU 290.5 LD 13.9 km/s
2173-07-08 03:29:00 Juptr 0.4495 AU 174.9 LD 13.3 km/s
2173-07-08 03:29:00 Jupiter 0.4495 AU 174.9 LD 13.3 km/s

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

Sources