NASA Selects Proposals to Study Stellar Explosions, Galaxies, Stars

Thursday, 18 August 2022

NASA has selected four mission proposals submitted to the agency’s Explorers Program for further study.

01.08.2025 at 13:19:18 UTC

Type	Aug 1	Aug 2	Aug 3
Active	25%	20%	15%
Minor	5%	5%	1%
Moderate	1%	1%	1%
Strong	1%	1%	1%
Kp Index Prediction
00-03UT	2.33	1.67	1.67
03-06UT	2.67	3.00	1.33
06-09UT	2.33	2.67	1.33
09-12UT	2.00	2.33	1.33
12-15UT	2.00	2.00	1.33
15-18UT	1.67	1.33	1.33
18-21UT	2.00	1.33	1.67
21-00UT	2.33	1.67	1.67
Solar Activity
Solar activity was at low levels. Only low-level C-class X-ray activity was observed. Region 4167 (N10W17, Dai/beta-gamma) developed into the most complex region on the disk, with growth in both number of spots and penumbral area. Only minor changes were observed in the remaining numbered active regions on the visible disk. No Earth-directed CMEs were observed in available coronagraph imagery.
Solar Wind
The solar wind parameters were indicative of a near-background regime. Total magnetic field strength was between 4-8 nT. The Bz component reached as far south was -7 but frequently fluctuating between positive and negative over the past 24 hours. Solar wind speeds varied between ~400-500 km/s. Phi angle was predominantly negative.
Energetic Particle
The greater than 2 MeV electron flux reached high levels with a peak flux of 1,104 pfu observed at 31/1355 UTC. The greater than 10 MeV proton flux was steady at background levels throughout the period.