2 October 2018
⇐20181001 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20181003⇒

NOAA
1 Active Region
12723

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 E39N08
(-592",50") 		E58-E25
(33) 		3.6 1.4 2.2e21
2 W32N71
(162",871") 		E89-W64
(153) 		2.5 1.3 6.7e21
3 W16S10
(258",-265") 		W08-W23
(15) 		1.3 -1.6 -5.3e20
4 W42N03
(645",-33") 		W38-W47
(9) 		0.1 -0.6 -3.3e19

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 2-Oct-2018 23:10 UT .