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/2014 Q2 (Lovejoy) (Dec 19, 2014).

Recent observations

Type  Comet name  Obs date       Mag     Dia   DC  Tail     Observer
  V      2014Q2   2014 12 22.28   5.4   &20    3/           AGUal
  V      2014Q2   2014 12 21.75   5.9          5            PEA  
  V    15         2014 12 21.70   9.9     2    4            SZAab
  V      2014Q2   2014 12 21.29   5.5    18    5            GOI  
  V      2014Q2   2014 12 21.26   5.5    15    5            LIN03
  V      2014Q2   2014 12 20.65   5.9          5/           PEA  
  C      2014Q2   2014 12 20.64   7.2     0.54 3            PAUaa
  C   119         2014 12 20.60  18.5     0.2               HILaa
  C      2014Q2   2014 12 20.52   7.1     7.9               HILaa
  C   284         2014 12 20.51  16.2     0.3               HILaa
  C      2014Q1   2014 12 20.50  15.6     0.3               HILaa
  C      2012K1   2014 12 20.48   9.8     2                 HILaa
  C      2012X1   2014 12 20.46  12.7     0.3               HILaa
  V      2014Q2   2014 12 20.35   5.4   &20    3/           AGUal
  V      2014Q3   2014 12 20.20 [11.4   ! 2.6               BIEaa

                            

Comet Observing Planner

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Current comet magnitudes (December 18)

Comet                     Magnitude   Trend    Observable     When visible
Lovejoy (2014 Q2)              5.5    bright   45 N to 50 S   all night
15P/Finlay                     9      steady   50 N to 40 S   early evening
PanSTARRS (2012 K1)           10.5    fade     35 N to 50 S   best evening
Oukaimeden (2013 V5)          11      fade     Poor elongation
Borisov (2014 R1)             11.5    steady   55 N to 20 S   early morning
Siding Spring (2013 A1)       11.5    fade     Poor elongation
Borisov (2014 Q3)             12      fade     90 N to 20 N   evening &
29P/Schwassmann-Wachmann      13 ?    varies   In conjunction
Catalina (2013 US10)          13.5    bright   35 N to 45 S   evening
PanSTARRS (2012 F3)           13.5 ?  steady   Poor elongation
32P/Comas Sola                13.5 ?  steady   70 N to 25 S   morning
LINEAR (2012 X1)              13.5    fade      5 N to 50 S   evening
110P/Hartley                  14 ?    steady   70 N to 15 S   transit 01:00

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


Latest news

Dec. 18, 2014

Rosetta Orbiter to Swoop Down On Comet in February

The European Space Agency's orbiting Rosetta spacecraft is expected to come within four miles (six kilometers) of the surface of comet 67P/Churyumov-Gerasimenko in February of next year. The flyby will be the closest the comet explorer will come during its prime mission.

more...
Dec. 18, 2014

CometWatch 14 December

This four-image mosaic comprises images taken from a distance of 19.4 km from the centre of Comet 67P/Churyumov-Gerasimenko on 14 December. The image resolution at that distance is 1.66 m/pixel and the individual 1024 x 1024 frames measure 1.7 km across. The mosaic is slightly cropped and measures 3.0 x 3.1 km.

more...
Dec. 17, 2014

CometWatch – 10 December

This four-image mosaic comprises images taken from a distance of 20.1 km from the centre of Comet 67P/Churyumov-Gerasimenko on 10 December. The image resolution is 1.71 m/pixel and the individual 1024 x 1024 frames measure 1.75 km across. The mosaic is slightly cropped and measures 2.9 x 2.6 km.

more...
Dec. 16, 2014

Comet 67P/C-G in living colour

Rosetta’s OSIRIS team have produced a colour image of Comet 67P/Churyumov-Gerasimenko as it would be seen by the human eye. As anticipated, the comet turns out to be very grey indeed, with only slight, subtle colour variations seen across its surface.

more...
Dec. 15, 2014

New Comet: P/2014 X1 (ELENIN)

CBET nr. 4034, issued on 2014, December 14, announces the discovery of a comet (magnitude ~18) by Leonid Elenin on three CCD images taken on 2014, December 12 with a 0.4-m f/3 astrograph at the ISON-NM Observatory near Mayhill, NM, USA. The new comet has been designated P/2014 X1 (ELENIN).

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