Project Blue Book Special Report No. 14 (Analysis of Reports of Unidentified Aerial Objects)

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CODE 59 LIGHT COLOR
X Variable
y
0 White
1 Black
2 Grey
3 Red
4 Orange
5 Yellow
6 Green
7 Blue
8 Violet
9 Other
CODE 62 SPEED
CODE 60 COLOR GROUP CLASSIFICATION
CODE 61 NUNBER
X Light glow
y
0 White
1 Metallic
2 Red
3 Orange
4 Yellow
5 Green
6 Blue
7 Violet
8 Black
9 Other
CODE 63 SHAPE
X
y
0 1
1
2
2 .3
3 4
4 5
5 6
6 7 -10
1 11-20
8 21-30
9 31 or more
CODE 64 SUBTENDED VISUAL ANGLE
(Referred to sun diameter)
Variable
X Variable
y
X Decreased in size
y
Hovering, stationary
Less than 100 mph
100 - 400 mph
More than 400 mph
Meteor-like
Not stated
Other
0 Ellipse
1 Rocket
2 Conventional aircraft
3 Unconventional aircraft
4 Meteor, comet
5 Lenticular
6 Conical
7 Teardrop
8 Flame, t ails, fire
9 Fire
0 0.1
1 0.2
2 o.5
3 0.15
4 1.0
5 1.5
6
2.0
7 4.o
8 4.0 to 10.0
9 Other
CODE 65 LIGHT BRIGHTNESS (Intensity)
CODE 66 ANGULAR VELOCITY
X Decreased
y
0 Sunlight on mirror
l
Sunlight on aluminum
2 Sunlight on plaster
3 Sunlight on stone
4 Sunlight on soil
5 Brighter than moon
6 Like moon
7 Duller than moon
8 Barely visible
9 Other
306
X Variable
y
O Zero
1 Very slow, 1° per second
2 Slow, 3° per second
3 Moderate, 6° per second
4 Rapid, 12° per second
5 Very fast, 30° second
6 Extremely fast, 90° per second
7 More than 90° per second
8
9 Other
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