17 January 2021
⇐20210116 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210118⇒

NOAA
1 Active Region
12796

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 E00N46
(-1",757") 		E61-W39
(100) 		8.2 0.8 1.6e21
2 E16N10
(-260",250") 		E32-W16
(48) 		7.6 0.0 4.9e19
3 W23S66
(160",-855") 		E71-W53
(124) 		3.9 -1.1 -1.4e21
4 W24N02
(403",113") 		W22-W27
(5) 		0.1 -0.9 -9.4e18
5 E59S14
(-813",-196") 		E63-E55
(8) 		0.1 -1.5 -2.8e19
6 E23N38
(-294",666") 		E25-E20
(5) 		0.0 1.8 1.6e19

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 17-Jan-2021 20:30 UT .