3 January 2024
⇐20240102 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20240104⇒

NOAA
4 Active Regions
13534
13535
13536
13537

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 E35S34
(-467",-512") 		E50-W08
(58) 		3.6 2.3 1.8e21
2 W47N46
(501",725") 		W34-W54
(20) 		0.2 -0.4 -2.9e19
3 E34N26
(-490",472") 		E36-E32
(4) 		0.1 0.4 1.1e19
4 W21N46
(237",742") 		W16-W27
(11) 		0.1 0.4 7.9e18
5 E04N15
(-60",309") 		E06-E01
(5) 		0.1 4.5 4.4e19
6 W63S22
(802",-345") 		W60-W64
(4) 		0.0 -2.1 -3.1e19
7 E46S14
(-683",-204") 		E48-E44
(4) 		0.0 3.6 3.3e19

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 3-Jan-2024 20:30 UT .