27 June 2021
⇐20210626 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210628⇒

NOAA
1 Active Region
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 W26S04
(415",-100") 		E05-W47
(52) 		7.3 0.0 1.0e19
2 W15N57
(136",773") 		E75-W76
(151) 		5.4 0.7 1.1e21
3 W52S08
(734",-163") 		W43-W60
(17) 		0.5 0.7 8.2e19
4 W43N20
(613",288") 		W38-W48
(10) 		0.3 -1.8 -1.1e20
5 E53N04
(-750",36") 		E56-E49
(7) 		0.1 -0.9 -1.6e19
6 W14S14
(225",-271") 		W12-W16
(4) 		0.1 1.9 1.8e19
7 W01S04
(20",-101") 		E00-W02
(2) 		0.0 -2.1 -1.5e19
8 E26S11
(-402",-219") 		E27-E24
(3) 		0.0 -1.5 -9.9e18

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 27-Jun-2021 23:30 UT .