2 January 2019
⇐20190101 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20190103⇒

NOAA
1 Active Region
12732

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 W10S20
(158",-291") 		E22-W38
(60) 		15.1 -0.7 -2.3e21
2 E31N07
(-502",160") 		E37-E25
(12) 		0.6 -1.4 -2.7e20
3 E46S69
(-255",-894") 		E78-E32
(46) 		0.4 -1.0 -1.2e21
4 W12S77
(45",-939") 		E10-W49
(59) 		0.2 -1.1 -7.1e20
5 E34S20
(-520",-295") 		E38-E32
(6) 		0.1 -0.7 -3.9e19
6 E18N17
(-290",334") 		E21-E15
(6) 		0.1 -0.7 -1.2e19

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-Jan-2019 20:30 UT .