24 December 2020
⇐20201223 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20201225⇒

NOAA
4 Active Regions
12794
12795
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 W22N03
(369",90") 		W01-W38
(37) 		3.1 0.2 1.3e20
2 W34N62
(252",879") 		E56-W67
(123) 		2.3 1.0 9.8e20
3 E28S72
(-139",-918") 		E55-W49
(104) 		0.9 -1.1 -5.0e20
4 E20S17
(-324",-258") 		E25-E14
(11) 		0.6 -4.0 -4.4e20
5 W61N35
(696",580") 		W54-W65
(11) 		0.4 0.9 1.5e20
6 E10S48
(-111",-705") 		E15-E05
(10) 		0.1 -1.3 -3.8e19
7 W08N14
(135",279") 		W04-W11
(7) 		0.1 -1.1 -2.2e19
8 W47S74
(193",-931") 		W35-W61
(26) 		0.1 -0.9 -6.2e19
9 E36N09
(-562",180") 		E39-E32
(7) 		0.1 1.1 2.2e19
10 E14S46
(-166",-676") 		E16-E12
(4) 		0.1 -0.6 -8.1e18
11 E06S06
(-96",-74") 		E07-E04
(3) 		0.0 1.3 9.3e18

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 24-Dec-2020 12:30 UT .