4 May 2020
⇐20200503 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20200505⇒

NOAA
2 Active Regions
12760
12763

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 E05S59
(-41",-787") 		E79-W82
(161) 		5.4 -0.9 -4.5e21
2 E17N04
(-282",131") 		E26-E03
(23) 		2.5 -0.2 -1.3e20
3 W08N01
(132",81") 		E05-W13
(18) 		1.5 0.1 1.8e19
4 E16N67
(-103",898") 		E45-W51
(96) 		0.9 1.1 3.3e21
5 W33S07
(511",-57") 		W29-W35
(6) 		0.1 -1.0 -3.4e19
6 W16N12
(261",251") 		W14-W18
(4) 		0.1 -0.9 -1.3e19

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 4-May-2020 19:30 UT .