17 August 2020
⇐20200816 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200818⇒

NOAA
1 Active Region
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 E08N00
(-138",-109") 		E39-W35
(74) 		10.4 -0.3 -5.1e20
2 W23N70
(126",852") 		E90-W62
(152) 		2.8 1.4 1.4e21
3 W24S61
(186",-874") 		E15-W63
(78) 		1.2 -0.4 -2.0e20
4 W42S46
(439",-738") 		W31-W45
(14) 		0.6 -0.5 -1.1e20
5 W54N08
(756",60") 		W48-W60
(12) 		0.1 -0.5 -1.7e19
6 W36S00
(555",-96") 		W33-W38
(5) 		0.0 -1.6 -1.3e19
7 W14S41
(170",-702") 		W12-W16
(4) 		0.0 -0.9 -7.7e18

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 17-Aug-2020 19:00 UT .