12 May 2021
⇐20210511 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210513⇒

NOAA
2 Active Regions
12822
12823

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 E37S57
(-311",-777") 		E73-W45
(118) 		4.3 -0.8 -1.1e21
2 E37S07
(-565",-83") 		E67-E05
(62) 		3.4 -0.3 -1.7e20
3 E22N72
(-108",918") 		E36-W03
(39) 		0.2 0.9 1.4e20
4 W32S15
(485",-209") 		W28-W38
(10) 		0.2 -3.2 -1.1e20
5 W57S68
(295",-872") 		W52-W66
(14) 		0.2 -1.5 -1.5e20
6 W21S14
(330",-192") 		W19-W22
(3) 		0.0 -1.2 -8.6e18

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-May-2021 19:30 UT .