6 February 2021
⇐20210205 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210207⇒

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 W22S07
(365",-19") 		E27-W62
(89) 		17.8 0.1 4.1e20
2 E43S71
(-223",-886") 		E76-E16
(60) 		0.9 -1.1 -4.4e20
3 E05N32
(-73",609") 		E10-W01
(11) 		0.2 -0.5 -2.0e19
4 E30N16
(-476",357") 		E33-E28
(5) 		0.2 -0.7 -2.2e19
5 E67S35
(-736",-520") 		E67-E60
(7) 		0.1 -1.9 -8.9e19
6 E55N01
(-795",82") 		E59-E52
(7) 		0.1 -0.4 -6.5e18
7 W01S27
(22",-348") 		E02-W04
(6) 		0.1 -1.1 -1.0e19

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 6-Feb-2021 20:30 UT .