9 June 2021
⇐20210608 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210610⇒

NOAA
2 Active Regions
12829
12830

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 E40S34
(-508",-533") 		E55-E05
(50) 		7.0 -0.4 -6.9e20
2 W24N59
(197",808") 		E64-W69
(133) 		3.1 0.6 6.0e20
3 E39S63
(-267",-848") 		E48-E22
(26) 		0.5 -0.8 -1.9e20
4 W66S15
(832",-246") 		W59-W73
(14) 		0.2 -1.2 -8.1e19
5 E37N15
(-546",247") 		E39-E34
(5) 		0.1 -1.0 -2.0e19
6 E63S55
(-484",-776") 		E69-E57
(12) 		0.1 0.2 9.0e18
7 E36N05
(-559",76") 		E39-E34
(5) 		0.0 -1.7 -1.4e19
8 W15S17
(236",-289") 		W13-W17
(4) 		0.0 -2.2 -1.5e19
9 W46N04
(675",66") 		W44-W48
(4) 		0.0 -1.4 -1.1e19

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 9-Jun-2021 19:30 UT .