3 February 2020
⇐20200202 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200204⇒

NOAA
1 Active Region
12757

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 W07S57
(64",-757") 		E72-W65
(137) 		8.6 -0.9 -5.4e21
2 W19S06
(320",-1") 		E24-W50
(74) 		7.5 -0.1 -1.6e20
3 E51N22
(-705",430") 		E60-E45
(15) 		0.5 0.8 3.7e20

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 3-Feb-2020 20:30 UT .