PROJECT BLUE BOOK

UNIDENTIFIED FLYING OBJECT CASE FILES · 1947 – 1969

CASE REFERENCE7228474

DATE OF SIGHTINGOctober 1957

REPORTED LOCATION44 43N141 48E

FRAMES4

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Transcribed Frames

FRAME 001 / 004tesseract-200dpi

) PROJECT 10073 RECORD CARD

1. DATE 2." LOCATION

12. CONCLUSIONS

Probably Astronomical
Possibly Astronomicol

Insufficient Date for Evaluation

0 Wes Balloon
f 31 October 1957 44,43N 141.488 O Probably Balloon
3. DATE-TIME GROUP 4. TYPE OF OBSERVATION = meer hee
scat 1330 E12Ground- Vi sual ©O Ground-Rodor = Probes Aicoah
GMT 31/09302Z 0 Air Vi suol 0 Air-Intercept Rador O Possibly Aircroft
5. PHOTOS 6. SOURCE aT ger a ee on el O Was Astronomicol
O Yes Oo
XE No Civilian Q
7. LENGTH OF OBSERVATION ~—_—*'|| 8. NUMBER OF OBJECTS | 9. COURSE Ae Cites
___ 15 minutes one stationary vee
10. BRIEF SUMMARY OF SIGHTING ie 7 11. COMMENTS _ a

Pillar of flame 100 miles high observe

in the West by fishermen for duration
of 15 minutes. Color changed from red
to blue then it disappeared.

————ee we ee

ATIC FORM 329 (RFV 24 SEP 52)

Insufficient data for evaluation

FRAME 002 / 004tesseract-200dpi

*»
= —

Country: Japan/USSR UNCLASSIPIsp Fs
subjects Luminors Sightings off the MC #3 Non 129 |
Hokkaido Coast AF #8 1170903 s :
Source 3° Maritine Safety Board Rot #3 TR S26.52
Preoar!ay Crficers: anthony M, Pereira, Azeney: ‘S0Czth Rir Intel Sv Sq |
Gapt. Usar D.R.? April 2, 1952 : |
| * D.I.s March 3, 1953 |
Set 1/1, Card 1/3 Evals 8.3
info Srees DS ‘nd
Dissrs 2 £2/273..3 cy3s/dela Eatire Document |
Summary:
1+ The informe s40n contained in this report was ootained fron Mr , ee,
GMB) sf of the Aviation Administration Saction and Mr, Chie?
of the No, 2 Security Section, MARITIMES SAPSsTy BOARD, as Taported to them by
Jacanese fishernen off the HO<KaIpo Coast,
! >

«+ This report

’
t contains information on three luminous
unknown orizin,

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LUM
i J

3

|
|
INOUS SIGRTINGS OFF THE HOKKAIDO cc

personnal of the Air Tachnical intelligence Section,

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FRAME 004 / 004tesseract-200dpi

S . ; fics °° , ;
set 1/1, Caré 3/3 Japan/ USSR MC #: None -

Rot #: IR-1886-52 -

COMMENTS OF TEE PREPARING OFFiCeRs
$e, && aper ximataly 0959 hours (JST) on 19 Fedrvary 1953 an unimoyn
vhanomens,y uslieved to have been an explosion, was detacted at £4420N/137308
at @ US radar site in JAPAN. The phenomena lasted approximately two hours.
This of Piece checked with the Meteorological Agenery for DSP OReLy s6 or seismic
Asta on the vremise that an axplosion was detonated. It waa learred that
there ware no barometric or asismic changes indicative of an exclosion at th
Nevative information was also obtained from the Maritime ana

f tha Defense Agency.

0-6 § ls of tha Meteorological Agancy stated that any barometric
change would be detected at weather stations in JAPAN, The seismic | detection
of 9 nuclear axolcsicn at tne MATSUSHIRO SBiISMCLOGICSL CGSERVATORY i3 believed
to have been instigated from this search. (Refer to 6004th AISS, IR 1885-58
for seisnic datection of USSR nuclear explosion.)

May 20, 1958

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