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Comet

Boattini

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510P/Boattini

Where is it now

Distance from Sun
4.91 AU
True anomaly
3.23°
Distance from Earth
3.995 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 Boattini — 4.91 AU from the Sun Boattini
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. Boattini is 3.995 AU from Earth today (33.2 light-minutes).

In the sky

Right ascension
00h 03m 30s
Declination
+11° 23′ 51″
Constellation
Pegasus
Distance from Earth
4 AU
Elongation from the Sun
153.28° — well clear of the Sun

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
6.517 AU
Eccentricity
0.2468
Inclination
8.22°
Orbital period
16.64 years
Perihelion
4.909 AU
Aphelion
8.126 AU
Longitude of ascending node
280.74°
Argument of periapsis
86.27°
Epoch · J2000
2457805.5
Orbit class · JFc
Jupiter-family comet (P < 20 y)
Earth MOID · 1,525.4 LD
3.9195 AU
Tisserand (Jupiter)
2.945

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
186
Data arc
17.06 years
First observed
17 September 2009
Last observed
10 October 2026
Residual RMS
0.53 ″
Solution · Otto Matic
14 October 2026

Visual & observation

Absolute magnitude (H)
7.2
Total magnitude M₁ · K₁ 14.3
7.2

Discovery & classification

Also known as 510P · 510P/2010 U1 · 510P/2025 M4

Named

Close approaches 8 on record

When (UTC) Body Distance Lunar distances Relative speed
2091-11-09 18:53:00 Juptr 1.1519 AU 448.3 LD 5.4 km/s
2097-11-28 16:23:00 Juptr 1.7098 AU 665.4 LD 2.7 km/s
2151-01-22 04:11:00 Juptr 0.4134 AU 160.9 LD 3.8 km/s
2151-01-22 04:11:00 Jupiter 0.4134 AU 160.9 LD 3.8 km/s
2162-07-24 07:46:00 Jupiter 0.3241 AU 126.1 LD 3.9 km/s
2162-07-24 07:46:00 Juptr 0.3241 AU 126.1 LD 3.9 km/s

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

Sources