29 April 2020
⇐20200428 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200430⇒

NOAA
2 Active Regions
12760
12761

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 E11S64
(-79",-823") 		E82-W74
(156) 		4.8 -0.8 -4.2e21
2 -417
(-253",E15S04") 		22
(6.0e04) 		-0.3 5.7 3.4e21
3 E19N64
(-135",885") 		E46-W06
(52) 		0.9 1.1 2.5e21
4 W28S41
(343",-577") 		W25-W32
(7) 		0.2 -0.7 -6.8e19
5 W34N06
(534",151") 		W32-W37
(5) 		0.1 -0.8 -2.2e19

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-Apr-2020 19:30 UT .