16 August 2020
⇐20200815 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200817⇒

NOAA
2 Active Regions
12770
12771

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 E20N07
(-322",6") 		E37-W05
(42) 		6.1 -0.2 -2.1e20
2 W13N70
(73",849") 		E80-W44
(124) 		3.0 1.3 1.4e21
3 W02S61
(18",-875") 		E24-W46
(70) 		1.0 -0.8 -3.5e20
4 W20S20
(298",-428") 		W11-W27
(16) 		0.6 -1.0 -1.1e20
5 W28S48
(302",-765") 		W19-W34
(15) 		0.3 -0.3 -3.4e19
6 W47S55
(393",-816") 		W42-W51
(9) 		0.2 -0.7 -6.6e19
7 W36N11
(552",87") 		W33-W39
(6) 		0.1 -0.6 -1.1e19
8 W51N09
(727",82") 		W48-W54
(6) 		0.1 -1.4 -2.9e19
9 W09S14
(147",-332") 		W07-W13
(6) 		0.1 -2.9 -3.7e19
10 W28N28
(398",358") 		W25-W32
(7) 		0.1 -0.6 -7.1e18

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 16-Aug-2020 19:00 UT .