4 August 2020
⇐20200803 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200805⇒

NOAA
3 Active Regions
12769
12770
12768

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 E04S08
(-63",-222") 		E39-W30
(69) 		6.4 0.1 8.5e19
2 W52N41
(570",567") 		W42-W67
(25) 		0.8 1.1 2.5e20
3 E27S68
(-161",-906") 		E50-E09
(41) 		0.2 -1.2 -1.6e20
4 E01S63
(-9",-882") 		E16-W06
(22) 		0.2 -1.4 -9.4e19

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 4-Aug-2020 19:00 UT .