Comet observations table

COMET OBSERVATIONS

Comet/Object	Begin		End		Observer	Observatory	Configuration

47P/Ashbrook-Jackson

Orbital period : 8.37 years

NASA/JPL elements
IAU/MPC elements

Magnitude and Afrho plots

Num	Date [TU]	Julian day -2400000	Comet/Object Name	r (/Sun) [AU]	d (/Earth) [AU]	Pict	Spec	Coma Total mag (m1)	Nuclear mag (m2)	Coma diameter [']	Coma conden sation	Tail length [°]	Tail position angle [°]	Afrho [cm]	Instr diameter [mm]	Instr	m1 aperture radius [']	m2 aperture radius ["]	Obs MPC code	Who

18700	2017 12 22.8	58111.34153	47P/Ashbrook-Jackson	3.026	2.547	Pict	-	-	18.3	-	-	-	-	-	410	L	-	5.6	A77	jnicolas
18592	2017 12 05.8	58094.31885	47P/Ashbrook-Jackson	2.993	2.309	Pict	-	-	17.9	-	-	-	-	-	200	L	-	6.6	A77	jfsoulier
18527	2017 11 17.9	58076.40422	47P/Ashbrook-Jackson	2.961	2.105	Pict	-	-	17.5	-	-	-	-	-	410	L	-	5.6	A77	jnicolas
18504	2017 11 15.9	58074.44895	47P/Ashbrook-Jackson	2.958	2.086	Pict	-	-	17.5	-	-	-	-	-	410	L	-	5.6	A77	jnicolas