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 231000 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 2017O1 2017 09 20.02 10.1 3.5 3 COLac C 62 2017 09 19.47 13.9 1.3 RAMaa C 96 2017 09 19.38 16.5 0.18 RAMaa C 2017K2 2017 09 19.17 19.2 5 BUIaa C 2015O1 2017 09 19.11 14.2 0.6 1.8m105 RAMaa C 2016M1 2017 09 19.11 14.0 0.8 RAMaa V 2017O1 2017 09 18.90 [ 8.9 ! 3 PAR03 V 2017O1 2017 09 18.87 11.5: 9 GEIaa V 2017O1 2017 09 18.39 [ 8.8 AGUaa V 2017O1 2017 09 18.38 9.0 5 1 HER02 V 62 2017 09 18.08 [14.5 ! 1.3 CER01 V 217 2017 09 18.05 12.7 1.5 4 CER01 V 2016R2 2017 09 18.04 13.9 1.7 3 CER01 C 2015VL62 2017 09 18.03 15.0 0.6 HILaa C 2017D2 2017 09 18.02 15.4 0.3 HILaa
Comet Magnitude Trend Observable When visible ASASSN (2017 O1) 9 bright 65 N to 65 S best morning Johnson (2015 V2) 10 fade 20 N to 85 S evening PanSTARRS (2015 ER61) 11.5 fade 65 N to 45 S best morning 71P/Clark 12 fade 20 N to 85 S best evening 217P/LINEAR 12 fade 55 N to 40 S early morning 29P/Schwassmann-Wachmann 13 ? varies 50 N to 80 S best evening PanSTARRS (2016 R2) 13.5 ? bright 55 N to 70 S early morning Lemmon-Yeung-PanS (2015 VL62) 13.5 steady 60 N to 60 S best morning PanSTARRS (2015 O1) 13.5 steady 60 N to 25 S evening 24P/Schaumasse 14 ? bright 35 N to 0 S early morning
List of comets maintained by Jonathan Shanklin at http://www.ast.cam.ac.uk/~jds.
Astronomers have focused the Hubble Space Telescope on an exoplanet that had already been seen losing its atmosphere, which forms an enormous cloud of hydrogen, giving the planet the appearance of a giant comet. During earlier observations, it was not possible to cover the whole cloud, whose shape was predicted by numerical simulations. Thanks to these new observations, the scientists have finally been able to confirm the initial predictions.
The Rosetta space probe discovered a large amount of organic material in the nucleus of comet 'Chury.' Researchers now advance the theory that this matter has its origin in interstellar space and predates the birth of the solar system.
There are about seven times more long-period comets measuring at least 1 kilometer across than previously predicted, suggests new research. The researchers also found that long-period comets are, on average, nearly twice as large as 'Jupiter family' comets, whose orbits are shaped by Jupiter's gravity and have periods of less than 20 years.
Scientists pursue research through observation, experimentation and modeling. They strive for all of these pieces to fit together, but sometimes finding the unexpected is even more exciting. That's what happened recently to a researcher who studies comets, asteroids and planetary formation and was part of a team that published a study focused on the comet 174P/Echeclus. It didn't behave the way the team was expecting.
CCD photometry of comet still remains as a very difficult work, especially for most wanted total coma magnitudes, compatible with visual observations. Also the usual problem is creating of proper ICQ coded line of observation. To help observers with this, I programmed an application - tool for comet observers, which is now in testing - beta phase.