Comet Observation database (COBS) was developed in 2010 and is maintained by Crni Vrh Observatory. It is a unique service offering comet observers to submit, display and analyse comet data in a single location and is opened to comet observers worldwide. Registered observers may submit the observations using a simple web-based form which will store their observations into an SQL database and display them in ICQ format.
Data stored in COBS database is freely available to everyone with respect to our data usage policy, and can be analysed with COBS online tools or exported and further used in other analysis software and publications.
Database currently contains more than 228000 comet observations of more than 1200 different comets and represents the largest available database of comet observations.
Amateur comet observers can make a useful contribution to science by observing comets and submitting their observations to the COBS, as the professional astronomers do not have the time nor the telescopes needed to gather such data. We encourage comet observers worldwide to submit their observations and contribute to the COBS database.
Type Comet name Obs date Mag Dia DC Tail Observer V 41 2017 03 26.00 7.2 24 5 COLac V 2015V2 2017 03 25.95 10.6 3.1 5 COLac V 2015V2 2017 03 25.92 9.6 5 4 MEY V 41 2017 03 25.90 7.3 17 2/ MEY V 41 2017 03 25.85 7.2 22 2/ CER01 V 2 2017 03 25.79 8.0 2 7 MAT08 V 2015ER61 2017 03 25.78 8.6 5 4 MAT08 V 2017E4 2017 03 25.77 9.0 3.5 4 MAT08 C 2017E4 2017 03 25.48 9.4 > 6.5 RAMaa C 41 2017 03 25.25 7.3 >35 RAMaa V 41 2017 03 25.21 7.3 18 3 HER02 V 41 2017 03 25.13 [ 7.3 AGUaa V 41 2017 03 25.13 8.0 11 1 FRA01 V 2015V2 2017 03 25.06 9.2 3.4 4 0.11 KUT V 41 2017 03 24.97 7.5 20 2 KUT
Comet Magnitude Trend Observable When visible 2P/Encke 6.5 fade 0 N to 70 S early morning 41P/Tuttle-Giacobinni-Kresak 8.5 bright 80 N to 45 S best evening PanSTARRS (2015 ER61) 9 bright 50 N to 75 S early morning Lovejoy (2017 E4) 9 bright 45 N to 75 S morning Johnson (2015 V2) 9.5 bright 80 N to 30 S best morning 45P/Honda-Mrkos-Pajdusakova 10 fade 80 N to 45 S best morning 73P/Schwassmann-Wachmann 11 bright 10 N to 50 S early morning PanSTARRS (2016 VZ18) 11 steady 80 N to 15 S evening Borisov (2017 E1) 12 steady 35 N to 50 S early morning 315P/LONEOS 12.5 o'burst? 70 N to 5 S all night PanSTARRS (2016 R2) 13 ? bright 15 N to 55 S evening 29P/Schwassmann-Wachmann 13 ? varies Poor elongation 237P/LINEAR 14 fade In conjunction Spacewatch (2011 KP36) 14 fade Poor elongation
List of comets maintained by Jonathan Shanklin at http://www.ast.cam.ac.uk/~jds.
COBS now includes the option to select Astrometrica version 4.10 and comphot photometry software when submitting CCD observations.
Thierry Noel has reported that Comet 73P/Schwassmann-Wachmann is showing a second component in images taken remotely from Chile (Observers: A. Maury, B. Sandness, T. Noel). Follow-up images taken by Andre Debackere using the Las Cumbres Observatory 1.0-m telescope at Siding Spring, Australia and measured by Richard Miles show that the main comet is accompanied by a much brighter secondary component surrounded by a faint coma.
For the first time, scientists using NASA's Hubble Space Telescope have witnessed a massive object with the makeup of a comet being ripped apart and scattered in the atmosphere of a white dwarf, the burned-out remains of a compact star. The object has a chemical composition similar to Halley's Comet, but it is 100,000 times more massive and has a much higher amount of water. It is also rich in the elements essential for life, including nitrogen, carbon, oxygen, and sulfur.
In September 2015, a team of astronomers successfully observed the entire hydrogen coma of the comet 67P/Churyumov-Gerasimenko, using the LAICA telescope onboard the PROCYON spacecraft. They also succeeded in obtaining the absolute rate of water discharge from the comet. Through our observations, we were able to test the coma models for the comet for the first time. This result is the first scientific achievement by a micro spacecraft for deep space exploration.
CBET nr. 4344, issued on 2017, January 11, announces the discovery of a comet (magnitude ~18.2) by L. Elenin on three CCD images obtained with 0.4-m f/2.4 reflector + CCD at the ISON-SSO Observatory at Siding Spring on Jan. 5.4 UT. The new comet has been designated C/2017 A3 (Elenin).