Comet C/2011 KP36 (Spacewatch)
False color image of comet C/2011 KP36 (Spacewatch), obtained on 2016 Jun. 29 (1h13-1h32UT) with 60-cm, f/3.3 Deltagraph. Exposure time 5x120s. Copyright © 2016 by H. Mikuz, Crni Vrh Observatory.

Welcome to COBS!

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 224000 comet observations of more than 1100 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.

Light-curve of Comet C/2013 X1 (PANSTARRS) (Aug 16, 2016).

Recent observations

Type  Comet name  Obs date       Mag     Dia   DC  Tail     Observer
  V    53         2016 08 23.97  12.4     1.2  1            KUT  
  V      2016A8   2016 08 23.91  12.2     0.8  6            KUT  
  V      2016A8   2016 08 23.84  12.7     0.5  4            HAR11
  V      2015V2   2016 08 23.84  14.2              30.0s290 FICaa
  C      2014OE4  2016 08 22.92  16.7     0.2               RAMaa
  C      2014W2   2016 08 18.97  14.0     1.51              BUCaa
  C      2016A8   2016 08 17.95  12.6     6                 LEHaa
  C      2014W2   2016 08 17.93  13.9     1.51              BUCaa
  C      2014W2   2016 08 17.86  14.0     2        0.04   1 LEHaa
  C      2013X1   2016 08 16.38  10.7    11        1.5  108 LEHaa
  C      2014W2   2016 08 15.94  14.0     1.51              BUCaa
  C      2016A8   2016 08 15.45  12.8     6                 LEHaa
  C     9         2016 08 14.38  12.6     6                 LEHaa
  C   226         2016 08 13.79  13.9     4.5               LEHaa
  C      2013X1   2016 08 13.38  10.8     8        1.2  108 LEHaa

                            

Comet Observing Planner

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Session length:
Limiting mag:
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Current comet magnitudes and observable region (August 3)

Comet                     Magnitude   Trend    Observable     When visible
PanSTARRS (2013 X1)            9.5    fade     35 N to 90 S   all night
81P/Wild                      10      fade     10 N to 45 S   early evening
43P/Wolf-Harrington           11      steady   30 N to  5 S   early morning
237P/LINEAR                   11.5    bright   15 N to 55 S   evening
9P/Tempel                     11.5    fade     35 N to 80 S   evening
PanSTARRS (2014 S2)           12      fade     20 N to 25 S   early evening
226P/Pigott-LINEAR-Kowalski   12 ?    bright   40 N to 70 S   morning
Spacewatch (2011 KP36)        13      steady   55 N to 60 S   morning
29P/Schwassmann-Wachmann      13 ?    varies   40 N to 90 S   evening
53P/Van Biesbroeck            13      fade     45 N to 70 S   best morning
PanSTARRS (2014 W2)           13      fade     55 N to 20 S   evening
Catalina (2013 US10)          13      fade     55 N to 25 N   early morning
Lovejoy (2014 Q2)             13 ?    fade     55 N to 35 S   best evening
LINEAR (2016 A8)              13.5    steady   60 N to  5 N   all night

List of comets maintained by Jonathan Shanklin at http://www.ast.cam.ac.uk/~jds.


Latest news

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Aug. 16, 2016

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Today’s CometWatch entry features a new image from Rosetta’s NAVCAM (below) along with a round-up of images released from the OSIRIS narrow- and wide-angle cameras in the last week.

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Aug. 09, 2016

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Jul. 29, 2016

CometWatch 24 July

This stunning view along the boundary between Hatmehit and Wosret was captured by Rosetta’s NAVCAM on 24 July from a distance of 9.7 km to the centre of Comet 67P/Churyumov-Gerasimenko.

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Jul. 29, 2016

Farewell, silent Philae

Tomorrow, 27 July 2016 at 09:00 UTC / 11:00 CEST, the Electrical Support System Processor Unit (ESS) on Rosetta will be switched off. The ESS is the interface used for communications between Rosetta and the lander, Philae, which has remained silent since 9 July 2015.

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