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 229000 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 2015V2 2017 04 29.93 9.6 5.7 5 COLac V 2015V2 2017 04 29.85 8.4 6.5 4 MEY V 71 2017 04 29.78 13.2 0.7 2 PEA V 2017E1 2017 04 28.79 11.0 1.3 4 WYA V 2015ER61 2017 04 28.77 7.8 8.2 6 WYA V 71 2017 04 28.76 12.7 1.3 6 WYA V 2 2017 04 28.76 12.3 1.4 3 WYA V 2015ER61 2017 04 28.75 7.5 5 4 MAT08 V 29 2017 04 28.74 13.6 0.5 5/ WYA V 41 2017 04 28.73 8.1 10 4 WYA V 2015V2 2017 04 28.72 8.8 3.8 6 17.3m304 WYA V 2015V2 2017 04 28.39 8.4 8 5 20.0m310 LIN04 V 41 2017 04 27.98 8.5 12 2/ KAS01 V 2015V2 2017 04 27.98 8.8 5 3/ KAS01 V 41 2017 04 27.97 7.4 8.2 4 KUT
Comet Magnitude Trend Observable When visible PanSTARRS (2015 ER61) 7 bright 45 N to 80 S morning 41P/Tuttle-Giacobinni-Kresak 7.5 fade 70 N to 15 S all night Johnson (2015 V2) 9 bright 70 N to 30 S all night Borisov (2017 E1) 9.5 steady 30 N to 60 S early morning Lovejoy (2017 E4) 9.5 fade 65 N to 35 S morning 2P/Encke 10 fade 10 N to 80 S morning PanSTARRS (2016 VZ18) 11 fade 70 N to 10 N all night 65P/Gunn 12 bright 30 N to 70 S best morning 73P/Schwassmann-Wachmann 12 fade 20 S to 45 S early morning 71P/Clark 13 bright 45 N to 75 S best morning PanSTARRS (2016 R2) 13 ? bright Poor elongation 29P/Schwassmann-Wachmann 13 ? varies 20 N to 70 S morning 315P/LONEOS 14 fade 70 N to 20 S best evening
List of comets maintained by Jonathan Shanklin at http://www.ast.cam.ac.uk/~jds.
Comets are some of the most interesting objects in the solar system. Water that filled the ancient oceans of Earth might have been delivered by comets. And there is growing evidence that many comets (as well as some primitive asteroids) contain molecules key to life. NASA has sent space probes to travel hundreds of millions of miles to study these icy interlopers from the outer solar system.
Images returned from the European Space Agency's Rosetta mission indicate the surface of comet 67P/Churyumov-Gerasimenko was a very active place during its most recent trip through the solar system, says a new study.
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.