Comet C/2014 Q2 (Lovejoy)
Color image obtained on 2015 Apr. 10 (20h08-20h18UT) with 60-cm, f/3.3 telescope and LBVR filters. Exposure time was 60s in each filter. Copyright © 2015 by H. Mikuz, Crni Vrh Observatory.

Welcome to COBS!

Between 1989-1997 an intensive comet photometry program at Crni Vrh Observatory resulted in contribution of hundreds of CCD observations to the ICQ database and IAU Circulars. This also created a need for an online observational database. The first version was created in 2002 and was used by Slovenian comet observers. The database contained 35 visually observed comets during the period 2002-2008. The best observed comets, with complete light-curves collected have been C/2002 C1 (Ikeya-Zhang), C/2002 V1 (NEAT), C/2001 Q4 (NEAT) and C/2004 Q2 (Machholz) as well as outburst of comet 17P/Holmes in late 2007.

The Comet Observation Database (COBS) is unique service, offering comet observers to submit, display and analyse comet data in a single location. It is maintained by the Crni Vrh Observatory and is opened to comet observers worldwide. Registered observers may now submit the observations using a simple web-based form which will store their observations into an SQL database and display them in ICQ format. Furthermore the users are be able to create light-curve graphs of selected comets and see all the observations. We encourage comet observers worldwide to submit their observations and contribute to the COBS database.

Light-curve of Comet C/2014 Q2 (Lovejoy) (May 20, 2015).

Recent observations

Type  Comet name  Obs date       Mag     Dia   DC  Tail     Observer
  V      2014Q2   2015 05 20.84   7.9     6    3            BAR06
  V      2014Q2   2015 05 19.83   7.6     9    3/           BAR06
  V      2015G2   2015 05 19.36   6.1    15    6   30.0m160 WYAab
  V      2015C2   2015 05 19.02 [11.8   ! 1.4               BIEaa
  V      2014Q2   2015 05 18.91   7.7     6    4/           BIEaa
  V      2015F3   2015 05 18.90 [11.7   ! 1.1               BIEaa
  V      2015F5   2015 05 18.89 [11.9   ! 1.2               BIEaa
  V      2015G2   2015 05 18.35   6.2    14    6            WYAab
  V      2014Q2   2015 05 17.99   7.9:    5    5            WAR01
  V      2015G2   2015 05 17.37   6.0     8    6            CAM03
  C    22         2015 05 17.22  12.3     0.12 9            PAUaa
  V    29         2015 05 16.55  11.8     1.4  1            CAM03
  V    22         2015 05 16.52  14.0     0.6  2            CAM03
  V    88         2015 05 16.35   9.7     3    4            GOI  
  V      2013US10 2015 05 16.33  11.4     2    4/           GOI  

                            

Comet Observing Planner

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Current comet magnitudes (May 17)

Comet                     Magnitude   Trend    Observable     When visible
MASTER (2015 G2)               6      fade      0 N to 90 S   evening
Lovejoy (2014 Q2)              8      fade     55 N to 10 N   all night
19P/Borelly                    9.5 ?  steady   Conjunction
PanSTARRS (2014 Q1)           10 ?    bright   10 S to 20 S   morning
88P/Howell                    10.5    fade     35 N to 75 S   morning
Catalina (2013 US10)          11.5    bright   25 N to 90 S   morning
SWAN (2015 C2)                12      fade     55 N to 40 N   morning
SWAN (2015 F3)                12.5    fade     55 N to  0 N   all night
10P/Tempel                    12.5 ?  bright   55 N to 55 S   best evening
22P/Kopff                     12.5 ?  bright   55 N to 55 S   best evening
Tenagra (2013 C2)             13      outburst 40 N to 80 S   best evening
29P/Schwassmann-Wachmann      13 ?    varies   30 N to 90 S   best morning
Siding Spring (2013 A1)       13 ?    fade     55 N to  5 S   all night
PanSTARRS (2012 K1)           13.5    fade      5 S to 75 S   early morning
SWAN-Xingming (2015 F5)       13.5    fade     50 N to  5 S   evening
PanSTARRS (2012 F3)           13.5 ?  steady   50 N to 70 S   early morning

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


Latest news

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Comet Wild 2: A window into the birth of the solar system?

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May. 20, 2015

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May. 20, 2015

CometWatch closeup: Hathor, from Seth

Today’s CometWatch post delves back in time to October last year, when Rosetta was orbiting the comet at a distance of just 10 km.

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May. 14, 2015

CometWatch 3 May

This image of Comet 67P/Churyumov-Gerasimenko was taken by Rosetta's NAVCAM on 3 May at a distance of 135 km from the comet centre. It is a single frame image, with a resolution of 11.5 m/pixel, and measures 11.7 km across. The intensities and contrast have been tweaked to emphasise the ever increasing activity of the comet.

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