16 December 2020
⇐20201215 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20201217⇒

NOAA
2 Active Regions
12792
12793

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 E40N48
(-419",736") 		E61-W63
(124) 		8.9 0.7 1.9e21
2 W18N06
(300",124") 		E00-W36
(36) 		6.5 -0.2 -2.5e20
3 W37N20
(559",344") 		W20-W58
(38) 		3.2 0.2 1.3e20
4 W08S66
(54",-882") 		E57-W72
(129) 		2.7 -1.1 -1.1e21
5 W04S40
(46",-610") 		E01-W06
(7) 		0.1 -0.9 -1.6e19
6 W33N00
(526",17") 		W31-W34
(3) 		0.0 -2.3 -1.9e19
7 W29N58
(252",835") 		W26-W32
(6) 		0.0 2.4 3.1e19
8 E02N05
(-38",100") 		E03-E01
(2) 		0.0 -1.4 -7.7e18
9 E19N03
(-316",77") 		E20-E17
(3) 		0.0 -2.1 -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-Dec-2020 20:30 UT .