What is happening to C/2017 O1 (ASASSN)?


 C/2017 O1 - Rolando Ligustri

Comet C/2017 O1 (ASASSN) was discovered on July 19 displaying already a large diffuse gas coma in the following days.  This color image was taken by Rolando Ligustri on July 27, the green color of the coma is due to the presence of strong C2 emission bands in the spectrum.



A release of the CARA database is on line containing comet's data.
The numbers of measures and comet are upgraded continuosly due the CARA's users contributions.

Browse the comet list/database

Some summary chart


Report of the annual meeting of UAI research sections on meteorites, asteroids and comets.

Hereafter a brief report of the annual meeting.

(clic picture to enalarge)

foto di gruppo



Chronologically ordered from the last published

Milani, G., Bryssink, E., Nicolini, M., et al. Photometry and imaging of Comet 103P/Hartley in the 2010-2011 apparition” – Icarus 222, 786-798(2013)

The CARA Project

The project started its active phase in 2003 and collected data on a number of comets including objects  target of  direct spacecraft explorations.

At present the  CARA project contributed to a general monitoring of comets targets of  three important missions.

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