5 February 2017
⇐20170204 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20170206⇒

NOAA
4 Active Regions
12629
12632
12630
12633

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 W39S61
(299",-805") 		E81-W84
(165) 		6.4 -1.3 -1.1e34
2 E01N09
(-9",252") 		E15-W19
(34) 		3.4 0.7 4.9e32
3 E52N25
(-696",472") 		E63-E40
(23) 		0.3 1.1 4.3e32

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 5-Feb-2017 20:30 UT .