18 May 2020
⇐20200517 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200519⇒

NOAA
0 Active Regions

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 W01S07
(16",-72") 		E28-W31
(59) 		10.4 -0.0 -4.0e19
2 W01S65
(3",-846") 		E67-W70
(137) 		3.4 -0.7 -3.4e21
3 W15S37
(201",-549") 		E00-W25
(25) 		2.3 -0.6 -5.5e20
4 W02N71
(9",907") 		E56-W55
(111) 		0.7 0.9 2.2e21
5 E26S26
(-372",-383") 		E32-E20
(12) 		0.6 -0.6 -1.2e20

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 18-May-2020 19:30 UT .