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Written by Erik Bryssinck
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Friday, 01 May 2009 |
Comet C/2009 G1 (STEREO) was announced on 9 april 2009 and discovered by Jiangao Ruan from China who found this 10th magnetude comet on images taken by SECCHI HI-1B instrument on board on one of the STEREO spacecraft . He found this possible comet in data from 5-the april.
The 2 STEREO satellites study the sun and environment.
 Comet C/2009 G1 (STEREO) by Erik Bryssinck
Since the data is found on images of the spacecraft, the name of the comet is been named to the spacecraft, in this case STEREO. Comet C/2009 G1 is the 20 discovered comet with STEREO. Just a couple of hours after the release of the initial orbit of C/2009 G1 (STEREO), it was located from the ground by Japanese astronomers, just a few arc-minutes from its predicted location! The orbit was updated to reflect these observations and released on MPEC 2009-G32.
 Afrho Plot of Comet C/2009 G1 (STEREO)
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Written by Administrator
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Saturday, 13 December 2008 |
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C/2006 P1 (McNaught) is brightening! Thanks to some new images provided by M. Jeager, G.Sostero updated the analysis of the light curve of this comet.
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Written by Giannantonio Milani
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Saturday, 23 August 2008 |
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Recent observations indicates that Comet 6P/d'Arrest has displayed a moderate outburst around August 18. A first alert came from G. Muler and J.A. Henriquez Santana on August 18 and the brightening was independently confirmed by an image taken on the same date by G. Milani. |
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Written by Giannantonio Milani
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Sunday, 03 August 2008 |
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Gustavo Muler (Spain) reports that observations performed on August 3.86 indicates that this comet is undergoing an outburst. It appeared three magnitudes brighter than usual and very small and condensed. |
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Written by Giannantonio Milani
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Thursday, 24 July 2008 |
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According to the observations provided by W. Borghini, E Guido & G. Sostero, R. Ligustri (Italy), H. Mikuz (Slovenia), G. Muler, J.A. Santana (Spain), T. Scarmato (Italy) comet 6P/d'Arrest is brightening fast as expected. The active phase started in early July about 40 days before perihelion. The encolsed R band plot refers to a 2500 km radius measuring window at the comet. 
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MCM (Median Coma Model)
Polinomi per estrapolare R e I
Recent Observations 
