29 January 2019
⇐20190128 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190130⇒

NOAA
1 Active Region
12733

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 W00S17
(1",-190") 		E47-W46
(93) 		19.6 -0.5 -1.8e21
2 W04S72
(21",-889") 		E79-W77
(156) 		2.5 -1.0 -4.7e21
3 W35N59
(288",871") 		W23-W65
(42) 		0.6 0.9 1.5e21
4 E53N06
(-779",168") 		E61-E46
(15) 		0.5 -0.5 -2.4e20
5 E38S18
(-568",-220") 		E39-E35
(4) 		0.1 -0.7 -1.5e19

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-Jan-2019 20:30 UT .