14 January 2021
⇐20210113 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210115⇒

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Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 E27N42
(-334",703") 		E53-W54
(107) 		7.6 0.6 1.1e21
2 E00S63
(-3",-829") 		E73-W50
(123) 		5.1 -1.2 -1.8e21
3 W25N17
(394",348") 		W19-W31
(12) 		0.6 -1.2 -1.2e20
4 W36N25
(519",470") 		W30-W41
(11) 		0.3 1.0 6.6e19
5 W12N06
(198",181") 		W06-W16
(10) 		0.3 -1.0 -4.1e19
6 E39N04
(-613",132") 		E42-E37
(5) 		0.1 -0.5 -1.1e19
7 E34N05
(-547",157") 		E36-E33
(3) 		0.1 0.7 7.9e18
8 W05N14
(81",309") 		W04-W06
(2) 		0.0 -2.7 -1.5e19

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 14-Jan-2021 20:30 UT .