2 May 2020
⇐20200501 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200503⇒

NOAA
4 Active Regions
12760
12761
12762
12763

Flare Forecast
Flare Prediction System
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W13S64
(90",-829") 		E68-W70
(138) 		4.2 -0.9 -4.5e21
2 W19S01
(311",42") 		E02-W37
(39) 		4.1 -0.3 -2.7e20
3 E20N04
(-330",130") 		E33-W04
(37) 		2.8 0.2 1.1e20
4 E09S18
(-134",-234") 		E21-W08
(29) 		2.2 -0.0 -2.0e19
5 W05N66
(31",894") 		E63-W40
(103) 		1.2 0.9 2.8e21
6 E29N05
(-458",145") 		E32-E25
(7) 		0.1 -0.9 -3.1e19
7 E39S31
(-512",-451") 		E41-E38
(3) 		0.1 -2.1 -1.0e20
8 W16S24
(243",-331") 		W14-W19
(5) 		0.0 -2.4 -3.1e19

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 2-May-2020 19:30 UT .