25 October 2020
⇐20201024 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20201026⇒

NOAA
1 Active Region
12776

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 W22N56
(203",760") 		E65-W50
(115) 		7.9 0.8 1.7e21
2 E15S10
(-255",-241") 		E33-W15
(48) 		3.9 0.2 1.0e20
3 W33N09
(524",75") 		W22-W45
(23) 		1.9 0.4 1.3e20
4 E32S68
(-198",-916") 		E56-E13
(43) 		0.2 -0.6 -8.4e19
5 E11S12
(-181",-282") 		E14-E07
(7) 		0.2 1.1 3.2e19
6 E05N10
(-75",78") 		E08-E01
(7) 		0.1 -1.1 -2.4e19
7 E28S30
(-391",-545") 		E29-E25
(4) 		0.1 2.7 4.1e19
8 E03S56
(-24",-843") 		E05-W02
(7) 		0.1 -0.6 -9.0e18

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 25-Oct-2020 20:30 UT .