17 June 2021
⇐20210616 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210618⇒

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 E35N60
(-267",810") 		E64-W68
(132) 		3.2 0.8 8.6e20
2 W51S55
(426",-778") 		E13-W61
(74) 		2.2 -0.9 -9.2e20
3 E30S03
(-473",-69") 		E35-E26
(9) 		0.2 0.6 2.2e19
4 W34N02
(531",19") 		W32-W36
(4) 		0.0 1.1 9.4e18
5 W23N03
(369",36") 		W22-W25
(3) 		0.0 -3.8 -2.5e19

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 17-Jun-2021 23:30 UT .