7 February 2021
⇐20210206 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210208⇒

NOAA
1 Active Region
12801

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 W26N02
(430",131") 		E20-W57
(77) 		13.3 0.1 2.9e20
2 E44S69
(-240",-877") 		E50-W20
(70) 		1.6 -0.6 -4.1e20
3 E58S43
(-609",-614") 		E63-E64
(-1) 		1.3 -0.8 -3.4e20
4 W66S14
(864",-196") 		W59-W74
(15) 		0.3 0.8 7.9e19

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 7-Feb-2021 20:30 UT .