30 December 2020
⇐20201229 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20201231⇒

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 E01N02
(-18",90") 		E22-W18
(40) 		2.1 -0.1 -2.1e19
2 E28S16
(-440",-232") 		E35-E14
(21) 		1.0 -2.5 -4.4e20
3 W01N68
(3",923") 		E47-W55
(102) 		0.9 1.0 4.3e20
4 E03N36
(-34",619") 		E09-W07
(16) 		0.6 1.4 1.7e20
5 E60S65
(-355",-874") 		E69-E69
(1.7e04) 		-3.3 5.0 8.5e20
6 W34N09
(537",201") 		W30-W37
(7) 		0.2 0.8 2.8e19
7 W34N14
(535",280") 		W32-W37
(5) 		0.1 0.8 8.7e18
8 W46N12
(682",243") 		W44-W48
(4) 		0.0 -4.6 -5.1e19

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 30-Dec-2020 20:30 UT .