I was getting ready to close my sliding door as I saw a very low blue light. I thought it was a helicopter since I’m very close to a hospital with a helipad. The light was very bright, blue and seemed very low in the sky. The light got brighter and then disappeared. There was never any sound. There is no moon tonight and I look at stars from my balcony regularly and this was the brightest thing I’ve ever seen. Great show.
Location
Address
Castro Valley, CA
Latitude
37° 42' 34.2'' N (37.7095°)
Longitude
122° 6' 21.52'' W (-122.105978°)
Elevation
129.482193m
Time and Duration
Local Date & Time
2025-05-19 23:58 PDT
UT Date & Time
2025-05-20 06:58 UT
Duration
≈3.5s
Direction
Moving direction
From up right to down left
Descent Angle
201°
Moving
Facing azimuth
4.15°
First azimuth
3.27°
First elevation
60°
Last azimuth
357.34°
Last elevation
35°
Brightness and color
Stellar Magnitude
-15
Color
Blue, Light Blue
Concurrent Sound
Observation
No
Remarks
-
Delayed Sound
Observation
No
Remarks
-
Persistent train
Observation
No
Duration
-
Length
-
Remarks
-
Terminal flash
Observation
No
Remarks
-
Fragmentation
Observation
Yes
Remarks
The color turned from blue to white/yellow. I thought it was a helicopter at first since I’m next to a hospital and see them all the time but there was no sound.
