29 February 2020
⇐20200228 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200301⇒

NOAA
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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 E08S63
(-60",-807") 		E59-W42
(101) 		6.5 -0.8 -4.7e21
2 E22S18
(-346",-188") 		E38-W05
(43) 		5.7 0.0 5.8e19
3 W24S20
(372",-229") 		W14-W32
(18) 		1.9 -0.7 -3.5e20
4 W42S23
(595",-299") 		W32-W51
(19) 		1.6 -0.2 -1.4e20
5 W11N66
(75",928") 		E11-W19
(30) 		0.2 0.3 3.1e20
6 W36N00
(565",102") 		W34-W38
(4) 		0.0 -0.8 -1.4e19

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 29-Feb-2020 20:30 UT .