22 January 2018
⇐20180121 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180123⇒

NOAA
1 Active Region
12696

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 E18S57
(-166",-769") 		E64-W23
(87) 		5.5 -0.9 -4.1e33
2 E29N23
(-433",450") 		E72-E07
(65) 		2.8 0.7 8.3e32
3 E37N55
(-336",838") 		E52-E45
(7) 		0.6 0.5 6.4e32
4 W68N09
(891",183") 		W58-W83
(25) 		0.3 -0.7 -5.2e32
5 W41S10
(630",-96") 		W37-W45
(8) 		0.2 -1.8 -1.3e32
6 W40S16
(602",-196") 		W38-W41
(3) 		0.1 -1.5 -5.7e31
7 W56S03
(811",-1") 		W54-W60
(6) 		0.1 -2.7 -1.4e32
8 E37S08
(-580",-66") 		E39-E35
(4) 		0.1 -1.1 -2.4e31

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 22-Jan-2018 20:30 UT .