COBS NEWS Archive

Oct. 28, 2011

New Comet: C/2011 U2 (BRESSI)

Cbet nr.2875, issued on 2011, October 26, announces the discovery of a new comet (discovery magnitude 19.4) by Terry H. Bressi on CCD images obtained on September 24, 2011 with the Spacewatch 0.9-m f/3 reflector at Kitt Peak. The new comet has been designated C/2011 U2 (BRESSI).

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Oct. 27, 2011

NASA Says Comet Elenin Gone and Should Be Forgotten

Latest indications are this relatively small comet has broken into even smaller, even less significant, chunks of dust and ice. This trail of piffling particles will remain on the same path as the original comet, completing its unexceptional swing through the inner solar system this fall.

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Oct. 25, 2011

Debris cloud of comet C/2010 X1 (Elenin)

The big problem imaging the debris of C/2010 X1 (Elenin), is the low S/N of the little cloud it left away. If you want to integrate enough, in order to increase the S/N of yours images, then you face the problem of the trailed stars that are crossing the field, producing an annoying interference with the faint cometary cloud.

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Oct. 23, 2011

Comet Storm in a Nearby Star System

NASAs Spitzer Space Telescope has detected signs of icy bodies raining down in an alien solar system. The downpour resembles our own solar system several billion years ago during a period known as the Late Heavy Bombardment, which may have brought water and other life-forming ingredients to Earth.

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Oct. 22, 2011

New Comet: P/2010 TO20 (LINEAR-GRAUER)

Cbet nr.2867, issued on 2011, October 21, announces the discovery of a new comet (discovery magnitude 19.1) by A. D. Grauer on CCD images obtained on September 19, 2011 with the Mount Lemmon 1.5-m reflector.

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Oct. 21, 2011

Another recovery attempt on C/2010 X1 (Elenin)

Today, we imaged again the field of C/2010 X1 (Elenin) remotely, from the GRAS network (Mayhill station, NM). We used two scopes, nearly simultaneously: the 254mm, f/3.4 reflector + CCD, and the 0.1m, f/5 APO refractor + CCD.

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Oct. 11, 2011

C/2010 X1 (Elenin) post solar conjunction recovery attempt

Recently we tried to image C/2010 X1 (Elenin) after its solar conjunction. The observing conditions for this comet are currently quite difficult: very low in the morning sky at twilight, within the zodiacal light pollution.

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Oct. 05, 2011

New Comet: C/2011 S2

Cbet nr.2852, issued on 2011, October 02, announces the discovery of a new comet (discovery magnitude 15.7) by R. A. Kowalski on CCD images obtained on September 30, 2011 with the Catalina Sky Surveys 0.68-m Schmidt reflector. The new comet has been designated C/2011 S2.

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Oct. 04, 2011

Bright Sungrazing Comet on October 01, 2011

A new bright comet diving into the Sun is visible right now (October 01, 2011) in C3 and C2 images taken by SOHO spacecraft. This object belong to the famous Kreutz-group, a family of sungrazing comets that are named after German astronomer Heinrich Kreutz who first studied them in the details.

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Sep. 23, 2011

Further fragmentation events in 213P/Van Ness

Stacking of 9 R-filtered exposures, 120-sec each, obtained remotely, from the Siding Spring-Faulkes Telescope South on 2011, September 20.6, through a 2.0-m f/10.0 Ritchey-Chretien + CCD, shows that fragment b of comet 213P is still visible, albeit very faint and diffuse (m2 about 21.5, coma diameter about 5-arcsec). Fragment b was located about 5.7 arcmin in PA 240 respect the main nuclear condensation of 213P/Van Ness.

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