Sea of Japan E of Vladivostok, December 1957
- Date of account
- 1957-12
- Location
- Sea of Japan E of Vladivostok
- Source
- uap_archive
- Record updated
- 2026-10-10
Record summary
Project Blue Book case file indexed from National Archives metadata; page-level review pending.
Published source text
Read the available text below. Archive transcriptions may contain OCR errors; later context is labelled separately. A recorded claim is not a finding that it happened.
Source page 1
Source text · mention onlyPROJECT 10073 RECORD CARD 1.DATE 2.LOCATION 12.CONCLUSIONS Sea of Japan Wes Balloon 23 December 1957 E of Vladivostok Probably Balloon 口 Possibly Balloon 3.DATE-TIME GROUP 4.TYPE OF OBSERVATION Ground-Visual ppoy-punoigu. 口 Was Aircraft Local 口 Probably Aireraft GMT 23/1243Z XXAinVi suol XB Air-Intercept Radar 口 Possibly Aircraft 5.PHOTOS 6.SOURCE 口 Was Astronomical XUY·s 口 Probably Astronomical ONo Military 口 Possibly Astronomical 7.LENGTH OF OBSERVATION 8.NUMBER OF OBJECTS9.COURSE 口 Othor xxinsufficient Data for Evaluation 口 Unknown one 10.BRIEF SUMMARY OF SIGHTING 11.COMMENTS A projectile was sighted by the a/c Insufficient data on the radar Commander which passed over the tail return for evaluation. of the a/c.Appeared to have a long trail behind and traveled in an arcing course,disappearang in a very bright explotion like a flash bomb. Radar was jammed and could not be tuned out. AT
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