5 January 2021
⇐20210104 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210106⇒

NOAA
1 Active Region
12795

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 E25N17
(-394",342") 		E37-W04
(41) 		2.8 0.2 9.7e19
2 E11S20
(-179",-282") 		E19-E02
(17) 		1.1 2.7 5.0e20
3 W35S75
(141",-930") 		W02-W44
(42) 		0.3 -0.9 -1.5e20
4 E20S77
(-78",-935") 		E32-W04
(36) 		0.2 -0.8 -8.9e19
5 E37N22
(-540",413") 		E40-E34
(6) 		0.1 -1.0 -2.4e19
6 W34N39
(421",652") 		W32-W35
(3) 		0.1 -1.0 -2.3e19
7 E25S10
(-406",-119") 		E26-E24
(2) 		0.1 1.2 1.3e19
8 E39N09
(-610",207") 		E41-E38
(3) 		0.0 -0.6 -4.7e18

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 5-Jan-2021 20:30 UT .