21 June 2021
⇐20210620 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210622⇒

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 W01N67
(6",859") 		E74-W63
(137) 		2.9 0.7 8.0e20
2 E12S08
(-194",-159") 		E22-E02
(20) 		2.3 -0.2 -6.4e19
3 E25N03
(-399",21") 		E29-E21
(8) 		0.2 -0.8 -2.1e19
4 E39S60
(-293",-832") 		E45-E28
(17) 		0.1 -0.8 -3.8e19
5 W38S06
(584",-123") 		W35-W42
(7) 		0.1 -1.1 -2.0e19
6 E19S76
(-72",-924") 		E41-W08
(49) 		0.1 -1.5 -1.2e20
7 E20S26
(-294",-434") 		E22-E18
(4) 		0.0 -1.6 -1.3e19
8 E35S07
(-543",-138") 		E37-E33
(4) 		0.0 -1.1 -9.6e18
9 E37S40
(-436",-627") 		E38-E35
(3) 		0.0 -0.5 -6.4e18

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 21-Jun-2021 23:30 UT .