Comet C/2014 E2 (Jacques) on 2014 Aug. 29
True color image of comet C/2014 E2 (Jacques), obtained on 2014 Aug. 29 (20h35-21h09UT) with 60-cm, f/3.3 Deltagraph telescope. Exposure time was 12x15 seconds. Copyright © 2014 H. Mikuz, OCV.

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 will 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.

Observers are reminded that the ultimate address which is collecting and storing comet data is International Comet Quarterly.

Light-curve of Comet C/2013 A1 (Siding Spring) (Nov 24, 2014).

Recent observations

Type  Comet name  Obs date       Mag     Dia   DC  Tail     Observer
  V      2014Q2   2014 11 28.12   7.7    10    4            GOI  
  V      2014Q2   2014 11 28.11   7.9     8    5            GOI  
  V      2012K1   2014 11 28.10   8.7     5    4            GOI  
  C      2014AA52 2014 11 26.57  15.7     0.2               HILaa
  C      2014W2   2014 11 26.55  16.3     0.2               HILaa
  C      2012K1   2014 11 26.49   9.1     3.8               HILaa
  C      2014Q1   2014 11 26.48  15.8     0.3               HILaa
  C   110         2014 11 25.68  15.1     0.2               HILaa
  C      2014Q2   2014 11 25.54   8.4     4.6               HILaa
  C   201         2014 11 25.49  15.4     0.3               HILaa
  C      2012X1   2014 11 25.46  12.4     0.3               HILaa
  V      2014Q2   2014 11 25.45   8.0     7    3            HER02
  C   174         2014 11 25.45  17.1     0.2               HILaa
  V      2014Q3   2014 11 24.78  10.8     2.5  2            HAR11
  C     4         2014 11 24.75  15.2     0.2               HILaa

                            

Comet Observing Planner

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Current comet magnitudes (November 20)

Comet                     Magnitude   Trend    Observable     When visible
PanSTARRS (2012 K1)            8      fade     25 N to 55 S   all night
Lovejoy (2014 Q2)              9      bright   30 N to 55 S   best morning
Oukaimeden (2013 V5)          10.5    fade     In conjunction
Borisov (2014 Q3)             11      bright   90 N to 25 N   all night
Borisov (2014 R1)             11.5    bright   60 N to 10 S   early morning
Siding Spring (2013 A1)       11.5    fade     Poor elongation
29P/Schwassmann-Wachmann      13 ?    varies   Poor elongation
PanSTARRS (2012 F3)           13.5 ?  steady   In conjunction
108P/Ciffreo                  13.5    steady   85 N to 25 S   best morning
Jacques (2014 E2)             13.5    fade     50 N to 20 S   early evening
LINEAR (2012 X1)              13.5    fade     10 N to 60 S   best evening
Catalina (2013 US10)          14      bright   30 N to 55 S   evening
P/NEOWISE (2014 L2)           14      fade     40 N to 50 S   evening

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


Latest news

Nov. 27, 2014

CometWatch 20 November - In the shadow of the coma

This NAVCAM mosaic comprises four individual images taken on 20 November from a distance of 30.8 km from the centre of Comet 67P/C-G. The image resolution is 2.6 m/pixel, so each original 1024 x 1024 pixel frame measured about 2.7 km across. The mosaic has been slightly rescaled, rotated, and cropped, and measures roughly 4.2 x 5.0 km.

more...
Nov. 25, 2014

CometWatch 20 November

This four-image montage comprises images taken of Comet 67P/Churyumov-Gerasimenko on 20 November, from a distance of 30.5 km from the centre of the comet. The image resolution is 2.59 m/pixel, so each 1024 x 1024 frame measures 2.66 km across. The four images making up the montage are provided at the end of the post.

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Nov. 25, 2014

New Comet: C/2014 W2 (PANSTARRS)

CBET nr. 4019, issued on 2014, November 21, announces the discovery of a comet (magnitude ~18.7) by PANSTARRS survey in four w-band CCD exposures taken with the 1.8-m Pan-STARRS1 telescope at Haleakala on Nov. 17. The new comet has been designated C/2014 W2 (PANSTARRS).

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Nov. 22, 2014

Homing in on Philae’s final landing site

Based on inputs provided by the CONSERT principal investigator Wlodek Kofman, CNRS researcher at the Institut de Planétologie et d'Astrophysique de Grenoble, Grenoble, France.

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Nov. 21, 2014

Cometwatch – 17 November

After last week's intense activities centred on Rosetta's lander Philae and its descent to the surface of Comet 67P/Churyumov-Gerasimenko, it's time to take another look at this beautiful comet through Rosetta's navigation camera.

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