15 March 2021
⇐20210314 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210316⇒

NOAA
2 Active Regions
12808
12809

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 E29S55
(-273",-723") 		E63-W52
(115) 		9.3 -1.5 -3.7e21
2 W13S03
(217",61") 		E04-W21
(25) 		1.9 0.5 1.5e20
3 W31N36
(403",651") 		W30-W41
(11) 		1.4 1.1 4.0e20
4 W46S49
(458",-670") 		W43-W58
(15) 		0.1 -1.2 -4.0e19
5 W41N03
(634",148") 		W37-W44
(7) 		0.1 -1.4 -3.2e19
6 E22N12
(-357",301") 		E25-E19
(6) 		0.1 -1.1 -1.9e19
7 W36S61
(281",-788") 		W29-W43
(14) 		0.1 -1.1 -3.1e19
8 W17S12
(271",-94") 		W13-W20
(7) 		0.1 -1.8 -1.7e19

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 15-Mar-2021 20:30 UT .