Light curve of 257P/Catalina

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Time
Time from peri
Log R
R
 Magnitude
m-5logD
Coma
Coma (linear)
Condensation
Mean values in days
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Comet
Comet; Fixed coefficient for logr:
Asteroid
Asteroid; Fixed coefficient G:

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m= 11.5 + 5logd + 10logr    [ -inf , inf ]
m= 11.82 + 5logd + 2.35logr    [ 2014 08 01 , 2016 08 01 ]