[Classification of Active Prominence]

A. surge type; jet-like ejection (Most of the ejected plasma returns back to the solar surface along a magnetic line of force.)

A1: flow back along the ejection pass

A2: flow down to the other foot point over the apex of a loop

B. eruptive prominence type; high-speed eruption of a pre-existing prominence

B1: gradually accelerated to the escaping velocity

B2: explosively accelerated to the escaping velocity (spray type)

C. disruptive prominence; disintegration of a pre-existing prominence

C1: break and slip down after slow rise

C2: fade out or fall down with no rising motion

D. partially-activated prominence; partially brightening, or breaking down of a pre-existing prominence

E. loop prominence

E1: a loop top brightening followed by a single loop formation

E2: post-flare loops (growing multiple loop system)

E3: a growing bright mound or compact loop cluster

F. others

F1: stable but exceptionally large prominence or in extraordinary shape

F2: unclassifiable prominence with large motion

[Height & Length]