4 November 2020
⇐20201103 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20201105⇒

NOAA
2 Active Regions
12781
12780

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 W20S19
(312",-369") 		E12-W49
(61) 		10.6 -0.5 -9.5e20
2 E01S62
(-8",-883") 		E64-W57
(121) 		1.9 -0.7 -4.7e20
3 W42S18
(616",-354") 		W35-W49
(14) 		0.5 -1.0 -1.2e20
4 W02N39
(26",561") 		E07-W11
(18) 		0.4 0.6 4.5e19
5 E53N04
(-769",29") 		E57-E49
(8) 		0.1 -0.4 -6.5e18
6 W25N03
(411",-4") 		W24-W27
(3) 		0.0 -0.9 -6.6e18
7 W52N16
(733",230") 		W48-W55
(7) 		0.0 -1.4 -1.4e19
8 W53S29
(678",-502") 		W50-W56
(6) 		0.0 -2.0 -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 4-Nov-2020 20:30 UT .