2 April 2018
⇐20180401 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20180403⇒

NOAA
1 Active Region
12703

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 W12N51
(129",808") 		E49-W52
(101) 		6.6 0.6 3.9e33
2 W27S70
(151",-862") 		E85-W66
(151) 		2.8 -0.3 -1.2e33
3 E53S01
(-766",49") 		E64-E43
(21) 		0.5 -0.5 -1.9e32
4 W44S39
(522",-538") 		W39-W51
(12) 		0.2 -0.7 -9.8e31
5 E04S32
(-63",-414") 		E08-E01
(7) 		0.1 -1.3 -5.2e31
6 E18N21
(-271",439") 		E21-E15
(6) 		0.1 -2.9 -1.3e32
7 W33S26
(476",-333") 		W30-W36
(6) 		0.1 -0.7 -3.5e31
8 E22N19
(-341",399") 		E25-E18
(7) 		0.1 -1.0 -2.7e31
9 E71N08
(-898",174") 		E80-E64
(16) 		0.1 -0.9 -2.1e32
10 W35S30
(481",-400") 		W32-W38
(6) 		0.1 -2.7 -7.9e31
11 W03N26
(51",511") 		E00-W06
(6) 		0.1 -0.8 -1.4e31
12 W42S04
(646",19") 		W41-W44
(3) 		0.0 4.8 8.5e31

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-Apr-2018 23:30 UT .