16 January 2021
⇐20210115 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210117⇒

NOAA
1 Active Region
12796

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 E11N37
(-151",654") 		E45-W29
(74) 		14.3 0.4 1.3e21
2 W24S64
(175",-844") 		E81-W66
(147) 		4.3 -1.1 -1.6e21
3 W38N06
(597",166") 		W34-W43
(9) 		0.2 -0.7 -2.1e19
4 W27N20
(412",403") 		W23-W30
(7) 		0.1 -2.2 -3.3e19
5 E17N17
(-274",352") 		E19-E14
(5) 		0.1 -0.9 -1.1e19
6 E11N13
(-177",291") 		E12-E08
(4) 		0.1 -1.2 -1.1e19
7 E25N52
(-252",812") 		E28-E22
(6) 		0.0 -1.1 -1.2e19

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 16-Jan-2021 20:30 UT .