Reports Report 2271c (Event 2271-2021)

This report has been linked to the following event: Event 2271-2021
Observer
NameMartin S
Experience Level3/5
RemarksIt was more than 12 seconds.. I was walking and facing the opposite direction and I don't know why I turned around and I saw it first with the white of my eye, so I didn't see it's actual start. And it didn't burned, I think it survived. In around the 10.5 second it stopped burning, it's tail disappeared and it turned in red-orange color still flying with the same speed and direction and it slowly became invisible. Like it cooled down.I'm 99% sure it survived and has hit the ground somewhere. How can I help (potentially) finding it?I've seen hundreds of meteorites but nothing like this one. It was........ I perfectly know what I saw.
Location
AddressSofia, Sofia City Province (BG)
Latitude42° 48' 23.89'' N (42.81°)
Longitude 23° 26' 12.21'' E (23.44°)
Elevation677.91m
Time and Duration
Local Date & Time2021-04-12 21:00 EEST
UT Date & Time2021-04-12 18:00 UT
Duration≈20s
Direction
Moving directionFrom up right to down left
Descent Angle269°
Moving
Facing azimuth220.98°
First azimuth264.65°
First elevation65°
Last azimuth164.79°
Last elevation61°
Brightness and color
Stellar Magnitude-15
ColorLight Blue, White
Concurrent Sound
ObservationNo
Remarks-
Delayed Sound
ObservationNo
Remarks-
Persistent train
ObservationNo
Duration-
Length-
Remarks-
Terminal flash
ObservationNo
Remarks-
Fragmentation
ObservationYes
RemarksAround the 5th second, 2-3 small pieces detached from it but they didn't affect the meteor at all