9 January 2020
⇐20200108 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200110⇒

NOAA
1 Active Region
12755

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 E27N41
(-335",683") 		E38-E26
(12) 		4.0 0.5 1.5e21
2 E03S66
(-17",-866") 		E81-W76
(157) 		3.8 -1.2 -6.2e21
3 E17S13
(-276",-165") 		E28-E02
(26) 		3.3 0.6 4.5e20
4 W19S12
(313",-144") 		E06-W36
(42) 		1.8 -0.3 -1.3e20
5 E33S41
(-406",-594") 		E38-E29
(9) 		0.1 -0.9 -5.6e19
6 E35S13
(-550",-162") 		E39-E31
(8) 		0.1 -0.6 -1.9e19
7 W06S25
(95",-357") 		W04-W09
(5) 		0.1 -1.1 -2.2e19

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-Jan-2020 20:30 UT .