26 June 2021
⇐20210625 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210627⇒

NOAA
2 Active Regions
12833
12835

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 W26S11
(402",-222") 		E19-W52
(71) 		8.0 0.1 1.4e20
2 W04N53
(37",735") 		E79-W69
(148) 		6.6 0.6 9.7e20
3 W15S26
(226",-455") 		W11-W20
(9) 		0.2 -0.8 -3.7e19
4 W42S68
(234",-888") 		W36-W56
(20) 		0.2 -0.6 -7.2e19
5 E45S04
(-668",-88") 		E48-E42
(6) 		0.1 -0.5 -7.7e18
6 W06N22
(94",316") 		W04-W08
(4) 		0.0 -2.0 -1.5e19

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 26-Jun-2021 23:30 UT .