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Comet

Boattini

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C/2010 J1 (Boattini)

Boattini is a comet in the Comet orbit class. Its orbit takes it from 1.7 AU to 71.75 AU from the Sun; one orbit takes 222.6 years. Orbit from the JPL solution of 15 April 2021.

Where is it now

Distance from Sun
31.256 AU
True anomaly
159.6°
Distance from Earth
31.133 AU
As of
24 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.

Sun Earth — 0.994 AU from the Sun Earth Boattini — 31.256 AU from the Sun Boattini
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. Boattini is 31.133 AU from Earth today (4.3 light-hours).

In the sky

Right ascension
08h 18m 34s
Declination
+52° 24′ 19″
Constellation
Lynx
Distance from Earth
31.13 AU
Elongation from the Sun
96.57° — well clear of the Sun

Favours the northern hemisphere; low or below the horizon from far south.

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
36.725 AU
Eccentricity
0.9538
Inclination
134.38°
Orbital period
222.6 years
Perihelion
1.696 AU
Aphelion
71.754 AU
Longitude of ascending node
254.81°
Argument of periapsis
333.11°
Epoch · J2000
2455339.5
Orbit class · COM
Comet
Earth MOID · 286.1 LD
0.7351 AU
Tisserand (Jupiter)
-0.975

Orbit quality

Orbit reasonably well determined (uncertainty code 5).

Observations used
605
Data arc
73 days
First observed
6 May 2010
Last observed
18 July 2010
Residual RMS
0.56 ″
Solution · Otto Matic
15 April 2021

Visual & observation

Absolute magnitude (H)
11.4
Total magnitude M₁ · K₁ 15
11.4

Discovery & classification

Also known as 2010 J1

Named

Sources