I checked my watch nearly immediately after sighting (6:31 pm). My watch time is accurate within 1 minute.
Location
Address
Flagstaff, AZ
Latitude
35° 13' 1.39'' N (35.217053°)
Longitude
111° 34' 58.21'' W (-111.582835°)
Elevation
2071.630127m
Time and Duration
Local Date & Time
2013-12-26 18:31 MST
UT Date & Time
2013-12-27 01:31 UT
Duration
≈3.5s
Direction
Moving direction
From up right to down left
Descent Angle
225°
Moving
Facing azimuth
322.96°
First azimuth
341.48°
First elevation
25°
Last azimuth
305.56°
Last elevation
17°
Brightness and color
Stellar Magnitude
-20
Color
Light Yellow
Concurrent Sound
Observation
No
Remarks
-
Delayed Sound
Observation
No
Remarks
-
Persistent train
Observation
No
Duration
-
Length
-
Remarks
-
Terminal flash
Observation
Yes
Remarks
brightness increased then abruptly disappeared. Possible, but uncertain, that disappearance was occlusion by mountains (San Francisco Peaks or Mt. Elden) on northern horizon