NEO 2011 ET4

in 2011

2011 ET4, an NEO asteroid belonging to Amor Group, discovered in the course of Catalina Sky Survey, merely flies passing near to the earth by approximately 72.1 lunar distances on Mar 05 2011.

2011 Mar 02

2011/03/02 17:00:07 UT - 17:10:38 UT, 14" SCT f/6.9 + QHY9 CCD, BIN 2x2 60 sec x 8 exposure, north up and east left

MPC observation computed with Astrometrica using CMC-14 star catalog:

COD C42
OBS X.Gao, M.-T. Hui
MEA M.-T. Hui
TEL 0.36-m f/6.9 Schmidt-Cassegrain + CCD
NET CMC-14
     K11E04T C2011 03 02.70841 12 11 29.33 +14 56 42.8          17.7 R      C42
     K11E04T C2011 03 02.70932 12 11 28.84 +14 56 34.2          17.6 R      C42
     K11E04T C2011 03 02.71023 12 11 28.25 +14 56 25.9          17.5 R      C42
     K11E04T C2011 03 02.71115 12 11 27.98 +14 56 18.8          17.5 R      C42
     K11E04T C2011 03 02.71296 12 11 27.12 +14 56 04.9          17.4 R      C42
     K11E04T C2011 03 02.71388 12 11 26.69 +14 55 56.5          17.9 R      C42
     K11E04T C2011 03 02.71479 12 11 26.24 +14 55 49.2          17.7 R      C42
     K11E04T C2011 03 02.71572 12 11 25.84 +14 55 41.6          17.9 R      C42
----- end -----

Gauss curve produced by Astrometrica with CMC-14. The total PSF is using an aperture circle of 5 x 5 pixel around the brightest pixel. Due to low SNR, we can see that the pixel values distribute deviantly from the computed ideal Gauss curve in the right. The Fit RMS, which inlays under the Gauss curve, is the deviation from the ideal line.

Photometry result computed with FOCAS II, which processes images based upon the .LOG file of Astrometrica:

Feel free to e-mail me with any doubts or questions.

Top

Back... -- Zurück...

Home