21 June 2024
⇐20240620 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20240622⇒



Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W47N48
(459",691") 		W18-W68
(50) 		3.1 -2.6 -2.6e21
2 W26S59
(214",-824") 		E16-W60
(76) 		1.8 0.4 2.6e20
3 W35S33
(458",-537") 		W22-W51
(29) 		0.9 6.3 1.3e21
4 W14S18
(222",-327") 		W01-W20
(19) 		0.5 1.2 9.2e19
5 E12N29
(-175",436") 		E18-E07
(11) 		0.4 -1.6 -1.0e20
6 W39N26
(535",390") 		W35-W43
(8) 		0.3 -5.9 -4.3e20
7 E40N17
(-583",255") 		E45-E32
(13) 		0.2 4.6 1.7e20
8 E25N12
(-398",164") 		E28-E22
(6) 		0.1 2.0 3.2e19
9 E18S20
(-280",-352") 		E20-E17
(3) 		0.1 -9.5 -9.1e19

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 21-Jun-2024 23:30 UT .