Reports Report 2488k (Event 2488-2015)

Observer
Name Kenneth S
Experience Level 5/5
Remarks I have been an active observer of the night sky for 25+ years, using a variety of telescopes for imaging and observing. See http://www.trivalleystargazers.org/ken/ST-2000XM/ST-2000XM.html
Location
Address Dublin, CA
Latitude 37° 43' 32.9'' N (37.725806°)
Longitude 121° 54' 39.29'' W (-121.910913°)
Elevation 116.888412m
Time and Duration
Local Date & Time 2015-10-04 19:24 PDT
UT Date & Time 2015-10-05 02:24 UT
Duration ≈3.5s
Direction
Moving direction From right to left
Descent Angle 270°
Moving
Facing azimuth 270°
First azimuth 310°
First elevation 40°
Last azimuth 230°
Last elevation 40°
Brightness and color
Stellar Magnitude -11
Color Blue, White
Concurrent Sound
Observation No
Remarks -
Delayed Sound
Observation No
Remarks -
Persistent train
Observation Yes
Duration 3s
Length 50°
Remarks From start to finish the duration was about 4-5 seconds. It started out glowing white, but intensified greatly to a blue glow, during which at least 3 dimmer pieces, reddish in color, fell off. The glow changed back to a dimmer white and then dimmed with a bit of a flash at the end. The beginning white trail and the blue trail together lingered for a few seconds, but were gone before the event terminated.
Terminal flash
Observation Yes
Remarks The terminal flash was present, but not pronounced.
Fragmentation
Observation Yes
Remarks While the fireball was showing the blue glow at least 3 dimmer pieces, reddish in color, fell off.