Comments

This exoplanet's transits are difficult for amateurs to observe, pasrtly because the depth is shallow (9 mmag), but mostly because the length is longer than most observing sessions.  This object may require multiple observers to adequately characterize one transit event. There are two ways of doing this: 1) transform instrumental mag's to standard mag's (the way AAVSO wants), and 2) observe the same object in OOT using same FOV placement and same reference stars. The second method is what I prefer. The next transit will be 2010.06.18, with the best observing longitude for ingress, mid and egrees being India (20.4 UT), Portugal (0.7 UT), and US East Coast (5.1 UT).

Basic data

    RA = 18:43:08.8, DE = +06:12:15
    Season =  July 03
    V = 13.7, B-V = 0.xx, J = 12.175, K = 11.688 -> B = 14.46, V = 13.65, Rc = 13.21, Ic = 12.79, B-V = 0.80
    HJDo = 4603.3447 (1) &  P = 95.2738 (14) days (e.g., Schneider listing in Extrasolar Planets Encyclopaedia)
    Depth = 17.2 ± 0.8 mmag (CoRoT filter)
    Length = 8.7 ± 0.2 hr
    Fp = 0.20 ± 0.10, F2 = 0.82 ± 0.15
    b = 0.xx

Table of amateur observations

Light Curves - Amateur

 

 

Light Curves - Professional

     
Copied from discovery paper:  Deeg et al, 2010.

Finder Charts

References

Discovery paper: Deeg, H. J. et al, 2010, http://www.nature.com/nature/journal/v464/n7287/abs/nature08856.html
Joao Gregorio info for CoRoT-9

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WebMaster: Bruce L. Gary.  Nothing on this web page is copyrighted. This site opened:  2010.03.19  Last Update:  2010.03.19