30 May 2020
⇐20200529 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200531⇒

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 W08S15
(129",-229") 		E23-W42
(65) 		8.0 -0.2 -2.7e20
2 E04S65
(-30",-850") 		E72-W76
(148) 		3.2 -0.7 -3.6e21
3 W06N59
(51",816") 		E55-W28
(83) 		2.6 0.8 2.4e21
4 W27N13
(427",217") 		W08-W45
(37) 		1.5 -0.3 -1.3e20
5 E27S22
(-407",-338") 		E29-E25
(4) 		0.1 -0.9 -1.9e19
6 E27S07
(-424",-106") 		E29-E23
(6) 		0.1 -0.9 -1.5e19

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-May-2020 19:30 UT .