16 September 2018
⇐20180915 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180917⇒

NOAA
1 Active Region
12722

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 W30S21
(440",-441") 		W06-W51
(45) 		4.4 -0.9 -1.8e21
2 E39N50
(-391",663") 		E54-E11
(43) 		3.5 1.0 2.7e21
3 E13S59
(-114",-873") 		E53-W36
(89) 		1.9 -0.5 -1.9e21
4 E08S30
(-110",-575") 		E13-W00
(13) 		0.7 -0.7 -1.8e20
5 W45N10
(670",87") 		W38-W53
(15) 		0.5 -2.3 -6.4e20
6 W64N70
(297",871") 		W80-W83
(3) 		0.4 1.0 1.6e21
7 W34N18
(508",192") 		W31-W36
(5) 		0.1 -6.3 -1.4e20

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 16-Sep-2018 23:10 UT .