29 December 2020
⇐20201228 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20201230⇒

NOAA
2 Active Regions
12794
12795

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 W23N11
(369",223") 		W08-W33
(25) 		1.6 -0.1 -3.1e19
2 E16N69
(-97",927") 		E43-W45
(88) 		0.8 0.9 3.7e20
3 E18N38
(-245",631") 		E29-E09
(20) 		0.8 1.8 3.0e20
4 E43S16
(-645",-229") 		E47-E38
(9) 		0.4 -2.6 -2.3e20
5 W13N16
(218",318") 		W11-W16
(5) 		0.1 -0.9 -1.9e19
6 E51N12
(-741",229") 		E53-E48
(5) 		0.1 -1.2 -1.6e19
7 E37S11
(-573",-154") 		E39-E34
(5) 		0.0 -1.2 -9.7e18

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 29-Dec-2020 20:30 UT .