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Astrometric data for minor planet center

COD U69

CON iTelescope.net SRO Observatory Auberry California USA, Eyckensbeekstraat,2 , 9150 Kruibeke, Belgium

OBS E.Bryssinck

MEA E.Bryssinck

TEL 0.62-m f/6.5 astrograph + CCD

ACK MPCReport file updated 2017.10.21 11:28:55

NET CMC-15

    CK17T010  C2017 10 09.50285 08 24 53.98 -04 11 12.9          17.5 N      U69

    CK17T010  C2017 10 09.50456 08 24 54.16 -04 11 13.2          18.7 N      U69

    CK17T010  C2017 10 09.50627 08 24 54.21 -04 11 13.4          18.9 N      U69

    CK17T010  C2017 10 09.50800 08 24 54.25 -04 11 14.8          17.9 N      U69

    CK17T010  C2017 10 09.50968 08 24 54.35 -04 11 13.4          18.9 N      U69

    CK17T010  C2017 10 09.51144 08 24 54.35 -04 11 14.6          18.2 N      U69

----- end -----

Comet C/2017 T1 -  9 oct. 2017

Photometric data obtained by use of FOCAS-II software

COD U69

CON iTelescope.net SRO Observatory Auberry California USA   

CATALOG: USNO A2.0 / CMC 14-15 - BAND: R

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

COMET         UTC                    +/-    +/-    +/-    +/-    +/-    +/-     N  FWHM  CAT

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

C/2017 T1     09/10/2017 12:10:16  17.78  17.49  17.59                        3.7  18.1  U69

C/2017 T1     09/10/2017 12:10:16*  0.14   0.23   0.23                          6   3.8  CMC

                                                                     AFRHO         LOG

COMET         UTC                   DELTA    r    BOX "   MAG   RSR    CM    +/-  AFRHO  OBS

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

C/2017 T1     09/10/2017 12:10:16    2.63   2.45  10.48  17.73    4     32     9  1.508  U69

FoCAs 3.50

www.astrosurf.com/cometas-obs

es.groups.yahoo.com/group/Cometas_Obs

Af(rho) data according the CARA-approach is available via request to CARA-coordinator

http://cara.uai.it

C/2017 T1 - disc.by ASASSN survey - orbit diagram by 3D Solar System Simulator of Skylive

Image taken of an object while it was still mentioned on the PCCP of the minorplanetcenter. Image taken with remote telescoxpe from California USA, data obtained from 6 x 120 sec Luminance filtered CCD-images.  Later was this object assigned as comet C/2017 T1 (HEINZE) The discovery details were announced with CBET 4444 on 16 oct. 2017.  My observation and confirmation: “object is diffuse and has a coma of 10” with a hint of a tail towards 239 degr.  of about 15” long.  R-magnitude of 17,5 with aperture radius of 4.96 sec.arc.  Data obtained from 6 Lum. filtered exposures of  120sec”.

According the preleminary ephemeride data, the closest approach for objects passing extremely close to Earth on 4 jan 2018 on a distance of about 0.22 AU !