22 June 2021
⇐20210621 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210623⇒

NOAA
1 Active Region
12833

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 E20S12
(-316",-230") 		E52-W30
(82) 		10.3 0.0 8.4e18
2 W05N68
(31",864") 		E66-W59
(125) 		2.7 0.6 5.7e20
3 E36S65
(-231",-868") 		E56-E37
(19) 		0.3 -0.4 -5.2e19
4 W31S09
(478",-181") 		W27-W35
(8) 		0.2 -0.7 -2.5e19
5 E04S76
(-18",-922") 		E29-W20
(49) 		0.1 -0.6 -4.4e19
6 E09S25
(-135",-432") 		E12-E06
(6) 		0.1 -0.8 -1.3e19
7 E11S01
(-183",-40") 		E13-E09
(4) 		0.1 -1.6 -2.0e19
8 E21S17
(-323",-300") 		E22-E19
(3) 		0.0 1.5 9.2e18

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 22-Jun-2021 19:30 UT .