9 May 2021
⇐20210508 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210510⇒

NOAA
1 Active Region
12822

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 E14S02
(-223",11") 		E33-W11
(44) 		4.9 -0.4 -3.0e20
2 W24S66
(157",-850") 		E71-W55
(126) 		2.5 -1.1 -1.0e21
3 E62S36
(-677",-540") 		E79-E51
(28) 		0.5 -0.8 -1.5e20
4 W27N71
(138",915") 		E23-W60
(83) 		0.4 1.0 2.8e20
5 W44S36
(530",-530") 		W37-W47
(10) 		0.4 -0.4 -4.2e19
6 E63S50
(-543",-714") 		E76-E54
(22) 		0.1 -0.7 -3.3e19
7 W15S06
(249",-46") 		W14-W16
(2) 		0.0 -1.5 -9.4e18

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 9-May-2021 23:30 UT .