Copyright © All rights reserved. Made By Erik Bryssinck  Terms of use  |  Privacy policy

Comet C/2011 L4 (PANSTARRS)  -  28 apr. 2012

Astrometric data

COD H06

CON iTelescope.net, remote observatory, New Mexico, http://www.itelescope.net [erik.bryssinck@telenet.be]

OBS Erik Bryssinck

MEA Erik Bryssinck

TEL 0.43-m f/6.8 astrograph + CCD + f/4.5 focal reducer

ACK MPCReport file updated 2012.04.28 15:56:15

AC2 erik.bryssinck@telenet.be

NET PPMXL

    CK11L040  C2012 04 28.44172 16 43 13.10 -25 28 54.0          15.1 N      H06

    CK11L040  C2012 04 28.44419 16 43 12.97 -25 28 54.0          15.2 N      H06

    CK11L040  C2012 04 28.44667 16 43 12.85 -25 28 54.4          15.1 N      H06

    CK11L040  C2012 04 28.44914 16 43 12.73 -25 28 54.4          15.1 N      H06

    CK11L040  C2012 04 28.45160 16 43 12.60 -25 28 54.8          15.1 N      H06

Photometric data (FOCAS-II)

                                   10x10  20x20  30x30  40x40  50x50  60x60   SNR   SB   COD

OBJECT        DATE       TIME        +/-    +/-    +/-    +/-    +/-    +/-     N  FWHM  CAT

------------  ---------- --------  -----  -----  -----  -----  -----  -----  ----  ----  ---

C/2011 L4     28/04/2012 10:43:11  14.07  13.67  13.60  13.60  13.62  13.67  29.0  20.0  H06

C/2011 L4     28/04/2012 10:43:11*  0.01   0.01   0.02   0.02   0.02   0.02     5   3.4  CMC

comet C/2011 L4 was discovered by the 1.8-m Pan-STARRS 1 Ritchey-Chretien telescope (Haleakala, Hawaii, USA) on four CCD images acquired during 2011 June 6.39-6.43. The magnitude was given as 19.4-19.6.

I couldn't found this comet on earlier observations made by myself. But now the comet is much brighter and has a magnitude of 14.1 with a starlike coma of 15 arc.sec, there is very faint tail . The distance of the comet to earth is about 3.95 AU at the moment. According to the orbital elements issued by the Minor Planet Center , i found that the comet was about 3' away from these coordinates. astrometry and photometry data were obtained with Astrometrica and FOCAS-II software. Images 3x180 sec exposuretime and used telescope was a Planewave ODK 17" with focal reducer and FLI 6303 camera from remote observatory iTelescope.net New-Mexico.