Night Sky Alert
Star trails circling the celestial pole above a volcano, crossed by the straight line of a space station pass
Tonight in Isesaki, Japan · More in Japan →
40 OUT OF 100

Maybe

Isesaki night sky · Sat, Oct 17, dark 18:00–4:56 GMT+9
Clouds
2%average tonight
Moon
38%Waxing Crescent
Aurora
Kp 2.0need Kp 9+
Space station
3:2239° high · SW→NE
  • Aurora unlikely. Tonight's forecast peaks at Kp 2.0. From here you'd usually need about Kp 9, which takes a rare, extreme storm.
  • Space station passes at 3:22, up to 39° high, moving SW → NE. It looks like a bright, steady star that crosses the sky in a few minutes.
  • Moon 38% lit (Waxing Crescent), above the horizon for 32% of the dark hours.
  • Clouds: about 2% effective cover during dark hours, so mostly clear.

Updated 24 min ago. Times in Asia/Tokyo (GMT+9).

Photo: Benedikt Markus · CC BY-SA 4.0

Clouds tonight
21:00clouds, % of sky5:00
Aurora reach
Kp 9+ needed
Magnetic latitude 30.5° N, too far from either auroral zone in all but the rarest storms. Tonight's forecast peak: Kp 2.0. Live map →
Moon
38% lit
Waxing Crescent. Up for 32% of dark hours.
Next meteor peak
Orionids
Peak night Oct 21–22 · Moon 82% lit

Next visible space station passes

When (GMT+9)HighestPath
Sun, Oct 18, 3:1939°SW → NE
Sun, Oct 18, 4:5622°W → NE

Visible passes only: station sunlit, your sky dark. Computed from CelesTrak orbital data.

Launches within view

No scheduled launches within 1,000 km in the next week or so.

Free alerts

Get a heads-up when it's worth going out

One email when your sky is genuinely worth it: an aurora within reach, a launch you can see, a clear peak night. Nothing on ordinary nights. We'll confirm your address first, and you can unsubscribe in one click.

Nearby

Isesaki, Japan · 36.32°, 139.20° · population 211,850 (GeoNames). The score is an estimate; here's how it's made.