3 January 2021
⇐20210102 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210104⇒

NOAA
2 Active Regions
12794
12795

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 E15N27
(-226",498") 		E25-W01
(26) 		1.6 -0.3 -9.0e19
2 W15N21
(232",405") 		W03-W21
(18) 		1.1 -1.2 -2.2e20
3 E13S72
(-66",-913") 		E45-W26
(71) 		0.9 -0.7 -2.8e20
4 W26S20
(408",-285") 		W19-W32
(13) 		0.6 -4.6 -5.1e20
5 W09N35
(122",609") 		W02-W13
(11) 		0.3 -1.4 -7.5e19

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-Jan-2021 20:30 UT .