1 February 2013
⇐20130131 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20130202⇒

NOAA
5 Active Regions
11662
11663
11665
11666
11667

Flare Forecast
Flare Forecast
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E34N29
(-480",546") 		E64-E09
(55) 		3.3 -2.1 -4.3e33
2 W14S06
(234",6") 		W04-W21
(17) 		1.1 -2.7 -6.2e32
3 E06S15
(-97",-154") 		E11-W02
(13) 		0.4 1.1 8.4e31
4 E12N07
(-208",214") 		E16-E09
(7) 		0.2 -5.0 -2.1e32

Note: Solar Monitor's coronal hole segmentations are performed by CHIMERA, a copy of which is available at: github.com/TCDSolar/CHIMERA.

The operations of the CHIMERA algorithm is described in a peer reviewed paper: arxiv.org/abs/1711.11476.

An extensive copy of coronal hole properties are available at: solarmonitor.org/data.

The latest positions of the coronal holes are given in heliocentric co-ordinates, and the region positions are valid on 1-Feb-2013 22:00 UT .