7 October 2021
⇐20211006 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20211008⇒

NOAA
2 Active Regions
12880
12882

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 E24S13
(-385",-318") 		E36-E04
(32) 		5.2 0.3 2.9e20
2 E06N65
(-45",823") 		E83-W90
(173) 		3.1 0.9 7.7e20
3 W11S11
(180",-287") 		W04-W18
(14) 		0.6 2.6 2.4e20
4 W24N06
(382",6") 		W16-W30
(14) 		0.4 0.8 5.7e19
5 W13N23
(198",277") 		W04-W20
(16) 		0.4 4.0 2.4e20
6 E49S08
(-717",-196") 		E52-E44
(8) 		0.1 -0.4 -9.7e18
7 W04S17
(60",-385") 		W01-W07
(6) 		0.0 5.4 3.4e19

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-Oct-2021 19:30 UT .