WD2147+280
Basic Info

    2MASS 21495452+2816598
    RA/DE = 21:49:54.6 +28:17:00
    V = 14.7; CMC14 r' = 14.717, J = 14.715 (36), K = 14.878 (129)
Observation Summary



YYYYMMDD Length JD start - JD end Filter Observer RMS10 Sine Amplitude & Period


20110901 8.1 hrs 5806.660 - 5806.999 C Garlitz 2.7 mmag
3.2 ± 0.5 mmag, 3.5 hr
20110831 7.1 hrs 5805.650 - 5805.945 C Garlitz 2.7 mmag
1.3 ± 2.6 mmag, 3.5 hr
20110902 5.0 hrs 5806.673 - 5806.881 C Wiggins 3.0 mmag 3.4 ± 0.7 mmag, 2.2 hr
20110901 5.1 hrs 5806.287 - 5806.505 Rc Corfini 7.0 mmag 5.7 ± 1.7 mmag, 2.4 hr
20110901 2.6 hrs 5805.651 - 5805.760 C Foote, J. 1.9 mmag
20110901 7.4 hrs 5806.268 - 5806.576 C Ayiomamitis 7.8 mmag
4.0 ± 1.6 mmag, 2.6 hr
20110901 6.0 hrs 5805.678 - 5805.928 C Wiggins 3.1 mmag 4.4 ± 0.7 mmag, 2.1 hr
20110831 2.7 hrs 5805.329 - 5805.441 G Zambelli 6.0 mmag
20110830 2.7 hrs 5804.297 - 5804.408 C Corfini 6.8 mmag
20110829 6.0 hrs 5803.363 - 5803.612 C Mendez 8.9 mmag
20110829 3.2 hrs 5803.307 - 5803.441 G Zambelli 3.6 mmag
20110828 1.8 hrs 5802.339 - 5802.412 G Zambelli 4.2 mmag


Light Curves



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This small variation is less than can be expected for "spurious sinusoidal amplitude (9.5 mmag).
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raw spo Looks variability


With RMS10 = 3.1 mmag we predict spurious amplitude ~ 2.9 mmag. Meas'd amp is 4.4 +/- 0.7 mmag, so diff = 1.5 +/- 0.7 mmag, which is only 2-sigma.
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Finder Images



Aladin image.
   
WebMaster: B. Gary.  This site opened:  2011.08.23 Last Update:  2011.09.03