C/2010 G2 (Hill)


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The comet was discovered on April, 10 2010 by R. E. Hill (Catalina Sky Survey).

The latest IAU telegrams or the latest CBET's. IAUC Astronomical Headlines.

Minor planet center's orbital elements and Ephemeris, the comet on Seiichi Yoshida's Homepage
Light curves on Cometas ObsJPL Small body database


Alfons Diepvens, C23 Olmen, detected another outburst of the comet on January, 2 2012 of about 1.8 mag on a 10" x 10" field:

http://www.astronomie.be/alfons.diepvens/cometimages/index.html


C/2010 G2 (Hill)  by Bernhard Haeusler, Germany      C/2010 G2 (Hill)  by Bernhard Haeusler, Germany

C/2010 G2 (Hill) by Bernhard Haeusler, 2011-11-23 B/W             GIF animation 44 x 0.07 sec. = 44 x 1min. in reality   full size 8.8 MB

47 min. exposure, 2011-11-23 UT 03:02, 12" SCT  f-5.65 + CCD ST10XME
13.48 mag, coma: 4'14", tail: 3'36" in PA 359


C/2010 G2 (Hill)  by Bernhard Haeusler, Germany

C/2010 G2 (Hill) by Bernhard Haeusler, 2010-10-12 B/W

10 min. exposure, 2010-10-12 UT 17:50, 12" SCT  f-5.65 + CCD ST10XME
16.70 mag, coma: 12"  


On my images taken at August, 31 2010, I detected an outburst of  > 2 mag. After posting the observation to the YAHOO
Comets Mailing List Hidetaka Sato, Tokio, Japan confirmed an increase of brightness in #16697

C/2010 G2 (Hill)  by Bernhard Haeusler, Germany    C/2010 G2 (Hill)  by Bernhard Haeusler, Germany

C/2010 G2 (Hill) by Bernhard Haeusler                                             triple scale-up          original size

The development of the comet on and after the outburst between August, 31 and September, 17.
GIF animation 4 x 0.5 sec. = 4 images on 08.31, 09.05, 09.11, 09.17  2010
The stars are removed.

Examine also the light curve on Cometas_Obs. Concerning MPC Observations down there.


The comet in outburst of around 2.4 mag.

C/2010 G2 (Hill)  by Bernhard Haeusler, Germany      C/2010 G2 (Hill)  by Bernhard Haeusler, Germany

C/2010 G2 (Hill) by Bernhard Haeusler, 2010-08-31 B/W             GIF animation 6 x 0.07 sec. = 6 x 10min. in reality   

60 min. exposure, 2010-08-31 UT 19:43, 12" SCT  f-5.65 + CCD ST10XME
16.07 mag, coma: 11"  


MPC observations are documenting the outburst:

...
CK10G020 C2010 07 31.86577 15 20 51.50 +20 50 01.1 19.2 N EP033160
CK10G020 C2010 07 31.87114 15 20 51.39 +20 50 00.7 18.9 N EP033160
CK10G020 C2010 07 31.87567 15 20 51.30 +20 50 00.1 18.7 N EP033160
CK10G020 C2010 08 02.85936 15 20 11.40 +20 47 06.2 19.4 N EP033160
CK10G020 C2010 08 02.86139 15 20 11.31 +20 47 04.6 EP033118
CK10G020 C2010 08 02.86484 15 20 11.29 +20 47 05.8 19.4 N EP033160
CK10G020 C2010 08 02.87086 15 20 11.16 +20 47 05.2 19.3 N EP033160
CK10G020 C2010 08 02.87644 15 20 11.02 +20 47 04.7 EP033118
CK10G020 C2010 08 06.91369 15 19 01.03 +20 40 23.3 17.8 N EQ009212
CK10G020 C2010 08 07.87190 15 18 46.64 +20 38 38.2 18.2 T EQ009215
CK10G020 C2010 08 07.87295 15 18 46.64 +20 38 37.5 18.1 T EQ009215
CK10G020 C2010 08 07.87401 15 18 46.63 +20 38 36.6 18.1 T EQ009215
CK10G020 C2010 08 10.95425 15 18 06.14 +20 32 43.0 17.3 N EQ009212
CK10G020 C2010 08 15.94802 15 17 18.71 +20 22 10.8 18.3 N EQ009J38
CK10G020 C2010 08 15.95156 15 17 18.61 +20 22 10.4 18.6 N EQ009J38
CK10G020 C2010 08 15.96220 15 17 18.52 +20 22 08.7 18.5 N EQ009J38
CK10G020 C2010 08 25.81793 15 16 49.67 +19 59 05.0 18.6 N ER011160
CK10G020 C2010 08 25.82230 15 16 49.68 +19 59 04.4 18.7 N ER011160
CK10G020 C2010 08 25.82598 15 16 49.68 +19 59 04.0 18.5 N ER011160   before
CK10G020 C2010 08 31.82558 15 17 12.38 +19 44 16.4 16.1 N ER011B82  after
CK10G020 C2010 08 31.83264 15 17 12.43 +19 44 15.3 16.1 N ER011B82
CK10G020 C2010 08 31.83969 15 17 12.47 +19 44 14.2 16.1 N ER011B82
CK10G020 C2010 09 01.12218 15 17 14.28 +19 43 33.0 ER011H06
CK10G020 C2010 09 01.13034 15 17 14.33 +19 43 31.8 ER011H06
CK10G020 C2010 09 01.13413 15 17 14.36 +19 43 31.2 16.3 T ER011H06  confirmation by H. Sato.
CK10G020 C2010 09 01.47112 15 17 16.57 +19 42 40.7 16.6 N ER011D92
CK10G020 C2010 09 01.47575 15 17 16.61 +19 42 40.0 16.5 N ER011D92
CK10G020 C2010 09 01.80237 15 17 18.84 +19 41 51.5 16.2 N ER011213
CK10G020 C2010 09 01.81950 15 17 18.98 +19 41 48.7 16.2 N ER011213
CK10G020 C2010 09 01.82520 15 17 19.02 +19 41 47.8 16.3 N ER011213
CK10G020 C2010 09 01.84785 15 17 19.20 +19 41 44.7 16.1 N ER011J38
CK10G020 C2010 09 01.84987 15 17 19.23 +19 41 44.3 16.4 N ER011B66
CK10G020 C2010 09 01.85068 15 17 19.22 +19 41 44.4 16.1 N ER011J38
CK10G020 C2010 09 01.85920 15 17 19.28 +19 41 43.0 16.1 N ER011J38
CK10G020 C2010 09 01.90631 15 17 19.66 +19 41 36.1 16.3 N ER011B66
...

The jump of  2.4 mag between 2010 08 25.82598 and 2010 08 31.82558 is clearly recognizable.

Focas II Magnitudes of the dates of the animation:

OBJECT     DATE         TIME     10x10 20x20 30x30 40x40 SNR SB COD
------------ ---------- -------- ----- ----- ----- ----- ----- ----- ---- ---- ---
C/2010 G2 31/08/2010 19:58:59 16.07  15.91  15.91  15.93  27.9 18.5 B82
C/2010 G2 05/09/2010 20:07:22 16.42  15.97  15.81  15.73  20.2 18.8 B82
C/2010 G2 11/09/2010 19:34:16 16.77  16.20  15.90  15.74    9.2 17.9 B82
C/2010 G2 17/09/2010 19:16:10 16.70  16.24  16.00  15.79  10.1 18.0 B82


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Copyright of all sites and images of this web: Bernhard Haeusler, Rimpar, Germany   MPC code: B82 Maidbronn