116p_20090215

116P/Wild

[upwards] [116p_20090412] [116p_20090320] [116p_20090318] [116p_20090219] [116p_20090215] [116p_20090203] [116p_20090130]

At this image I found three asteroids, two of them are already known, one of them is a new object.
The MPC confirmed the new object at February, 23 2009 with the number K09C45D
At February, 19 I found the new object on another of my images of 116P/Wild by chance, because the object is escorting the comet since a couple of days!

After three weeks of confusion I could identify my new object on this image as 2009 BK163, detected by Spacewatch at January, 31 2009.
Finally I found two objects on two different images, not a single one. They had a similiar orbit, so I could easlily mismatch them. March, 7 2009

116P/Wild � by Bernhard Haeusler, Germany

� 2009-02-15 by Bernhard Haeusler, Maidbronn, Germany

5 x 3 min. exposure, 2009-02-15, UT 01:10 to 01:29, 12" SCT f-7 + CCD ST10XME
14.55 mag, coma: 0'48", tail: 2'35" in PA 279�

Discovery image of Asteroid K09C45D at February, 15 2009 while blinking 64 images with 3 min. exp. time each.
The position of the Asteroid was computed with excel, computing 62 positions between the start and ending positions.
After that, 64 images were added with the computed positions of the asteroid as centroid performed by MaxIm DL3.

Asteroid K09C45D � by Bernhard Haeusler, Germany

� 2009-02-15 by Bernhard Haeusler, Maidbronn, Germany

Asteroid K09C45D 64 x 3 min. exposure, 2009-02-15, UT 00:35 to 03:55, 12" SCT f-7 + CCD ST10XME
19.2 mag

Astrometry and Photometry of K09C45D:

COD B82
OBS Bernhard Haeusler
TEL 0.30-m Schmidt-Cassegrain + CCD
NET CMC-14

K09C45D * C2009 02 15.05009 09 41 22.32 +19 27 08.7          19.2 R      B82
K09C45D * C2009 02 15.05226 09 41 22.18 +19 27 07.0          19.1 R      B82
K09C45D * C2009 02 15.05874 09 41 21.80 +19 27 07.6          19.3 R      B82
K09C45D * C2009 02 15.06089 09 41 21.77 +19 27 06.3          19.3 R      B82
K09C45D * C2009 02 19.10422 09 37 53.71 +19 26 41.8          19.0 R      B82
K09C45D * C2009 02 19.11068 09 37 53.37 +19 26 39.9          19.4 R      B82
K09C45D * C2009 02 19.11285 09 37 53.26 +19 26 39.6          18.5 R      B82
K09C45D * C2009 02 19.11500 09 37 53.12 +19 26 40.5          18.4 R      B82
K09C45D * C2009 02 19.11716 09 37 52.91 +19 26 40.3          18.6 R      B82

Astrometry and Photometry of 116P/Wild:

MPC observation: computed with Astrometrica

COD B82
OBS Bernhard Haeusler
TEL 0.30-m Schmidt-Cassegrain + CCD

NET CMC-14

0116P C2009 02 15.05657 09 40 56.19 +19 19 57.5 14.6 N B82
0116P C2009 02 15.05873 09 40 56.09 +19 19 57.8 14.6 N B82
0116P C2009 02 15.06089 09 40 55.95 +19 19 57.9 14.5 N B82
0116P C2009 02 15.06305 09 40 55.84 +19 19 58.5 14.6 N B82
0116P C2009 02 15.06521 09 40 55.69 +19 19 58.7 14.5 N B82

Gauss curve produced by Astrometrica. The total PSF is using the aperture circle of 10 x 10 pixel around the brightest pixel.
You see the Gauss curve right as the computed ideal line and the real pixels contributed around the ideal line.
The Fit RMS is the deviation from the ideal line (inlay under the Gauss curve).

Photometry computed with FOCAS II, using the Multibox method:

COD B82
OBS Bernhard Haeusler
CATALOG: USNO A2.0 / CMC-14 - BAND: R

10x10 20x20 30x30 40x40 50x50 60x60 SNR SB COD
OBJECT DATE TIME +/- +/- +/- +/- +/- +/- N FWHM CAT
------------ ---------- -------- ----- ----- ----- ----- ----- ----- ---- ---- ---

116P 15/02/2009 01:27:41 14.55 13.89 13.61 13.44 13.32 13.23 28.2 18.5 B82
116P 15/02/2009 01:27:41* 0.03 0.04 0.05 0.05 0.04 0.05 5 5.3 CMC

FoCAs II - 07/01/2009-b

FOCAS II is a tool for photometry on the base of data coming from Astrometrica. Focas is basically using the .LOG file of Astrometrica.

Explanation of the FOCAS II table headings:

Object, date and time are self-explaining.
10x10, 20x20 ... 60x60 are the measured magnitudes according to the aperture sizes of photometry in arc sec (rectancle).
SNR is the Signal-to-noise ratio for aperture photometry (calculator).
SB is the magnitude of the faintest star on the image matching with the used star catalogue. This is not the faintest star of the image!
COD is the MPC Code of the observatory.

second line:
+/- are the precisions of the measurements.
N is the number of the used images for the measurements.
FWHM is the Full-Width Half-Maximum of the total PSF: Measure of the seeing.
CAT is the used star catalog in Astrometrica.

Focas II is using the .log file of Astrometrica and is computing the photometry under different apertures (10x10 ... 60x60).
The graphs are showing the astrometric precision of the images.

links:

http://astrosurf.com/cometas-obs/index_i.htm Visual and CCD Observations and images from the "Cometas Obs" mailing list, using the Focas II format

es.groups.yahoo.com/group/Cometas_Obs The Spanish comet observation group in Yahoo

[upwards] [116p_20090412] [116p_20090320] [116p_20090318] [116p_20090219] [116p_20090215] [116p_20090203] [116p_20090130]