Recovery of NEOs at 2
nd
return
Period P =
P +
D
P
T (future) = T +
D
T +
n x
(P +
D
P
)
Longitude of
ascending node
b
Angle of perihelion
w
Inclination
i
Perihelion
distance q
Semi-major axis a
Perihelion date T
a +
D
a
q +
D
q
w
+
D
w
b
+
D
b
i
+
D
i
T +
D
T
Earth