27 December 2020
⇐20201226 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20201228⇒

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 W07N13
(110",264") 		E10-W22
(32) 		1.8 -0.1 -2.2e19
2 E32N09
(-509",186") 		E46-E14
(32) 		1.7 0.0 8.7e18
3 W04N69
(22",927") 		E62-W51
(113) 		0.8 0.6 2.3e20
4 W28S17
(442",-257") 		W23-W34
(11) 		0.5 -4.0 -3.8e20
5 W43S73
(195",-924") 		E07-W74
(81) 		0.4 -0.8 -1.9e20
6 W07N19
(120",364") 		W04-W10
(6) 		0.1 1.4 1.6e19
7 W40N12
(609",241") 		W36-W42
(6) 		0.1 1.6 2.3e19
8 E37S78
(-127",-945") 		E53-E19
(34) 		0.1 -0.6 -2.3e19
9 W25S11
(409",-144") 		W22-W28
(6) 		0.1 -5.7 -5.4e19

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 27-Dec-2020 20:30 UT .