2011 uf305_20111113

C/2011 UF305 (LINEAR)

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The object has a period of around 9200 years. Till now, no cometary action is recognized.

2011 UF305 � by Bernhard Haeusler, Germany

� 2011-11-13 by Bernhard Haeusler, Maidbronn, Germany frozen on object and stars

30 min. exposure, 2011-11-13 UT 17:36, 12" SCT f-5.65 + CCD ST10XME
17.28 mag (10x10 box)

2011 UF305 � by Bernhard Haeusler, Germany

� 2011-11-13 by Bernhard Haeusler, Maidbronn, Germany frozen on object

30 min. exposure, 2011-11-13 UT 17:36, 12" SCT f-5.65 + CCD ST10XME
17.28 mag (10x10 box)

Elements published by MPC so far:

2011 UF305

Epoch 2011 Oct. 26.0 TT = JDT 2455860.5                 MPC
M 359.97100              (2000.0)            P               Q
n   0.00010716     Peri.  121.98820     -0.29701605     -0.35866983             T = 2456131.08299 JDT
a 438.9791604      Node   297.48724     +0.06954345     +0.91618701             q =     2.1408474
e   0.9951231      Incl.   94.00200     +0.95233669     -0.17876608
P9197              H   11.2           G   0.15
From 68 observations 2011 Oct. 31-Nov. 25.

MPC observation: computed with Astrometrica

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

NET CMC-14

K11UU5F C2011 11 13.73822 18 23 05.60 +15 03 11.9 17.3 R B82
K11UU5F C2011 11 13.74934 18 23 05.89 +15 03 12.3 17.2 R B82
K11UU5F C2011 11 13.75306 18 23 06.05 +15 03 12.6 17.2 R B82

Gauss curve produced by Astrometrica. The total PSF is using the aperture circle of 3 x 3 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      SNR   SB COD
OBJECT        DATE          TIME          +/-      +/-     +/-          N FWHM CAT
------------ ----------      --------    ----- ----- ----- ---- ----- ---- ---- ---

2011 UF5 13/11/2011 17:55:29 17.28 17.17 17.23 9.2 17.9 B82
2011 UF5 13/11/2011 17:55:29* 0.04 0.05 0.10 3 4.6 CMC

FoCAs 3.31

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

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