12 January 2021
⇐20210111 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210113⇒

NOAA
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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 W22N12
(364",275") 		E10-W42
(52) 		6.9 -0.0 -2.0e19
2 E31S61
(-246",-823") 		E53-W69
(122) 		4.5 -1.1 -1.6e21
3 E56N40
(-619",663") 		E74-E43
(31) 		0.6 0.9 2.2e20
4 E19N70
(-110",936") 		89
(3.1e04) 		0.4 3.5 1.1e21
5 E33N38
(-417",654") 		E40-E28
(12) 		0.4 0.9 9.7e19
6 W17S10
(286",-105") 		W15-W19
(4) 		0.1 -2.4 -2.2e19
7 W28S30
(402",-430") 		W26-W31
(5) 		0.0 -1.0 -7.3e18

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 12-Jan-2021 20:30 UT .