HYDROGEN LINE · 21cm
NOMINALH I rest frequency
1420.406 MHz
professional survey reference — the curve the backyard dish is trying to see
backyard instrument
first light pending
20dBi dish + SAWbird H1 + RTL-SDR V4 on the Pi — awaiting its first sky
▬ LAB survey l=90° b=0° (reference)relative intensity, normalized · x: MHz
SPACE WEATHER
NOMINALplanetary Kp
0.67
quiet magnetosphere — nothing shaking
solar wind
522 km/s · 1.1 p/cm³
elevated — likely a coronal-hole stream, minor storming possible
X-ray flux
M1.2
moderate flare — brief radio blackouts possible on the sunlit side
aurora @ 39°N
1%
no aurora chance at Kansas latitude tonight
Kp (7 days) · min 0.0 · max 5.3
METEORS
NOMINALPerseids
ZHR 100
Perseids is past peak but still dropping meteors — a major shower
Delta Aquariids
ZHR 25
Delta Aquariids is past peak but still dropping meteors — a solid mid-tier shower
last fireball · 2026-08-15
0.13 kt @ 4.0N 115.4W
substantial fireball — ~130 tons of TNT, likely dropped meteorites
COSMIC RAYS
NOMINALOULU neutron monitor
101.2 counts/s
steady — the normal galactic cosmic-ray drizzle
vs 24h mean
-0.33%
galactic cosmic rays hitting the upper atmosphere, counted from Finland — a live gauge of the Sun's shielding
OULU counts/s (24h) · min 101.0 · max 102.1
NEAR-EARTH OBJECTS
NOMINAL2026 QA · 2026-Aug-22
14.6 LD · 15.3 km/s
passes at 14.6× the Moon's distance — routine traffic; ~38m — building-sized rock
2026 PX · 2026-Aug-23
2.4 LD · 6.8 km/s
passes at 2.4× the Moon's distance — routine traffic; ~25m — building-sized rock
2023 RL · 2026-Aug-25
12.8 LD · 4.8 km/s
passes at 12.8× the Moon's distance — routine traffic; ~7m — house-sized, would mostly burn up
523609 · 2026-Aug-27
18.4 LD · 22.7 km/s
passes at 18.4× the Moon's distance — routine traffic; ~441m — city-killer class if it ever hit (it won't)