2 June 2021
⇐20210601 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210603⇒

NOAA
3 Active Regions
12827
12825
12828

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 W29S09
(447",-143") 		E15-W54
(69) 		7.9 -0.0 -3.0e19
2 E30S17
(-456",-277") 		E45-E13
(32) 		3.0 -1.0 -5.8e20
3 W00N68
(3",880") 		E51-W64
(115) 		1.6 1.0 6.8e20
4 E41S59
(-315",-811") 		E65-E25
(40) 		0.6 -0.6 -1.5e20
5 W27S23
(398",-369") 		W22-W32
(10) 		0.3 -0.6 -3.7e19
6 W34N39
(411",603") 		W31-W38
(7) 		0.1 -0.9 -2.7e19
7 E11S03
(-180",-37") 		3
(9.5e02) 		-1.1 2.6 2.4e19
8 W16S29
(232",-460") 		W14-W18
(4) 		0.1 -3.1 -2.8e19
9 W34N20
(504",328") 		W32-W37
(5) 		0.0 -1.7 -1.3e19

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 2-Jun-2021 19:30 UT .