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Comet

Boattini

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C/2008 J1 (Boattini)

Boattini is a comet in the Comet orbit class. Its orbit takes it from 1.72 AU to 330.39 AU from the Sun; one orbit takes 2,139.9 years. Orbit from the JPL solution of 15 April 2021.

Where is it now

Distance from Sun
36.431 AU
True anomaly
156.25°
Distance from Earth
36.402 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 — 36.431 AU from the Sun Boattini
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. Boattini is 36.402 AU from Earth today (5.0 light-hours).

In the sky

Right ascension
07h 38m 02s
Declination
-17° 11′ 24″
Constellation
Puppis
Distance from Earth
36.39 AU
Elongation from the Sun
91.52° — well clear of the Sun

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
166.059 AU
Eccentricity
0.9896
Inclination
61.78°
Orbital period
2,139.9 years
Perihelion
1.724 AU
Aphelion
330.393 AU
Longitude of ascending node
273.42°
Argument of periapsis
68.12°
Epoch · J2000
2454681.5
Orbit class · COM
Comet
Earth MOID · 431.9 LD
1.1098 AU
Tisserand (Jupiter)
0.799

Orbit quality

Observations used
1,557
Data arc
337 days
First observed
2 May 2008
Last observed
4 April 2009
Residual RMS
0.51 ″
Solution · Otto Matic
15 April 2021

Visual & observation

Absolute magnitude (H)
8.7
Total magnitude M₁ · K₁ 17.3
8.7

Discovery & classification

Also known as 2008 J1

Named

Sources