29 March 2021
⇐20210328 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210330⇒

NOAA
2 Active Regions
12812
12811

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 E22N06
(-353",202") 		E52-W19
(71) 		11.4 0.2 4.7e20
2 W05S73
(25",-879") 		E84-W86
(170) 		2.0 -1.7 -1.3e21
3 E23S11
(-363",-82") 		E25-E19
(6) 		0.1 -0.8 -1.2e19
4 W42S03
(648",25") 		W40-W45
(5) 		0.0 -0.5 -5.2e18

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-Mar-2021 19:30 UT .