December 13, 1998



19981213.174345_mk4

Center =194.51+/-1.69 degrees PA (SW quadrant) (red radial line)
Maximum height = 1.37+/-0.09 Rsun
Width (at 1.20 Rsun) = 12.87+/-1.72 degrees latitude (measured between edges -- vertical dashed lines at inflection points)
Width (at 1.28 Rsun) = 10.38+/-1.67 degrees latitude





length lower limit = 8 days visible in white light at limb December 12; -13; -14; -15***; -16**; -17; -18; -19 (CME!);

Also visibile Feb 4-5 1999
Evolution comments = PCF-S which erupts Dec 19 -- visible in Mk4, but not great quality. Also visible Feb 4-5 1999.

Neutral line orientation at the limb =
CME/dimmings association = CME December 19; prominence eruption on December 19;

Active region association = N/A

Filament/FC association = PCF-S; PCF

Other comments: N/A

Filament - only visible in H-alpha or EUV

Necking - no neck


Cavity list (e.g. Tables 2 + 3)
Full list of cavity days observed
List of best cavity days (SET 1) observed (e.g. Table 1)
CMEs associated with cavities (e.g. Tables 7 + 8)
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