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Astrometric data for minor planet center

COD I89

CON iTelescope.net, remote observatory, Nerpio, Spain, http://www.itelescope.net

OBS E. Bryssinck

MEA E. Bryssinck

TEL 0.43-m f/6.8 reflector + CCD

ACK MPCReport file updated 2013.04.21 10:27:06

AC2

NET PPMXL

     34IA228  C2013 04 21.09903 15 07 35.40 +16 53 47.5          18.4 R      I89

     34IA228  C2013 04 21.10157 15 07 35.32 +16 53 46.7          17.6 R      I89

     34IA228  C2013 04 21.10405 15 07 35.29 +16 53 45.8          18.3 R      I89

     34IA228  C2013 04 21.10667 15 07 35.21 +16 53 45.5          18.1 R      I89

     34IA228  C2013 04 21.10921 15 07 35.10 +16 53 45.1          18.1 R      I89

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Comet C/2013 H1 (LA SAGRA) - 20 april 2013

Photometric data obtained by use of FOCAS-II software

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

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

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

C/2013 H1     21/04/2013 02:29:54  18.28  18.01  18.11                        6.2  19.7  I89

C/2013 H1     21/04/2013 02:29:54*  0.13   0.14   0.14                          5   2.8  CMC

COMET         UTC                   DELTA    R    APER    Mag   AfRho   +/-   Log   Obs

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

C/2013 H1     21/04/2013 02:29:54    1.76   2.66  15.63  18.08     12     2  1.095  I89

I observed this object, while it was still mentioned on the NEOCP of Minor Planet Center with remote telescopes from New-Mexico and Nerpio Spain of the iTelescope.net networdk and also from my Backyard observaotry (BRIXIIS observatory MPC:B96). It has defenitely cometary appearances.

Later was this object assigned as comet C/2013 H1 (LA SAGRA) with CBET 3485: 20130422 : COMET C/2013 H1 (LA SAGRA).  In this CBET are my observations from the several observatories mentioned:

COMET C/2013 H1 (LA SAGRA)

     An object reported initially by J. Nomen as a possible comet from images taken on Apr. 19 in the course of the "La Sagra Sky Survey" with a 0.45-m

f/2.8 reflector at La Sagra, Spain ……..   Erik Bryssinck, Kruibeke, Belgium, writes that his five co-added 180-s images taken on Apr. 21.01 remotely with a 0.43-m f/6.8 reflector of the iTelescope network at Nerpio, Spain, show a coma of diameter about 10" with a tail about 18" long to the west (p.a. 272 degrees); his follow-up co-added images taken with an iTelescope 0.51-m f/4.5 astrograph near Mayhill on Apr. 21.3 shows a 12" coma with a hint of a tail toward the southwest (p.a. 245 deg), while similar images with his own backyard 0.4-m

f/3.8 astrograph on Apr. 22.06 with a luminance filter shows a similar appearance (though the tail p.a. was measured as p.a. 258 deg)…….

Image below is the image taken with the 17” telescope in Nerpio Spain