29 October 2017
⇐20171028 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20171030⇒

NOAA
2 Active Regions
12685
12686

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 E08S28
(-116",-528") 		E21-W11
(32) 		3.6 -2.1 -2.5e33
2 E28S61
(-217",-879") 		E54-W24
(78) 		1.6 -0.7 -2.8e33
3 W17N74
(81",904") 		E79-W70
(149) 		1.4 0.9 3.2e33

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-Oct-2017 20:30 UT .