3 April 2021
⇐20210402 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210404⇒

NOAA
1 Active Region
12812

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 W06S05
(102",26") 		E47-W59
(106) 		17.0 0.3 7.0e20
2 E52N04
(-751",129") 		E60-E46
(14) 		0.3 0.6 4.9e19
3 W30S80
(81",-924") 		E79-W84
(163) 		0.2 -0.8 -1.1e20
4 E45S24
(-618",-315") 		E47-E41
(6) 		0.1 -0.5 -8.8e18
5 E04N17
(-67",385") 		E06-E02
(4) 		0.1 -0.8 -9.0e18
6 E04S08
(-67",-31") 		E05-E02
(3) 		0.1 -1.8 -1.6e19
7 E47S28
(-621",-376") 		E50-E43
(7) 		0.0 -2.8 -2.7e19

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 3-Apr-2021 01:30 UT .