N Of Philadelphia, Pa., June 1958June 1958

Insufficient Data

Summary

On June 8, 1958, just after midday, north of Philadelphia, Pennsylvania, a civilian reported a single object in the daytime sky. The sighting lasted about 15 minutes. The object was flat and triangular with rounded corners, about the size of a shirt button held at arm's length, and black in color. There was no tail, trail, or sound. The witness, a technical illustrator, saw it climb steadily in a straight course for about five minutes, hover briefly, then descend, travel west and upward, and disappear. The report was filed under Project 10073, the Air Force's official record for unidentified flying object reports. The Air Force concluded the description and flight matched the observation of a balloon release.

Reported location

N Of Philadelphia, Pa., June 1958

Date of incident

June 1958

State / country

? / XX

Page count

4 scanned pages

USAF evaluation

unknown

Microfilm

T1206, Roll 33

Original case file scans

Original case file · scanned by NARAPage 1 of 4

View transcribed text

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PROJECT 10073 RECORD CARD i» 3
I. DATE 2. LOCATION 12. CONCLUSIONS
¥BX Wos Balloon
8 Jun 58 N of Philadelphia, Pa. O Probably Balloon
3. DATE-TIME GROUP 4 TYPE OF OBSERVATION i TTUNEY,
O Was Aircraft
Local ap —— a Bround-Vi sual O Ground-Radar Q Probably Aircraft
| ont 08/1655Z2 0 Air Visual O Air-Intercept Radar O Possibly Aircraft
S. PHOTOS - SOURCE O Was Astronomical
O Yes O Probably Astronomical
sBNo Civilian a] Possibly Astronomical
7. LENGTH OF OBSERVATION 8. NUMBER OF OBJECTS | 9. COURSE ik RR Se ER
: - i chico Data for Evaluation
15 mins one S then W iia
10. BRIEF SUMMARY OF SIGHTING 11. COMMENTS
: Flat, triangular obj w/corners Description & flight characterist|i«
rnded, size of shirt button, black, conform to observation of balloo
The obj climbed steadily in a straight| release.
Jcourse for approx 5 mins where it
hovered momentarily, then descended,
traveled West & upward & disappeared.
ATIC FORM 329 (REV 26 SEP §2)
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bi Esa AO Nl AB 5 SAO i 5 AA EAR rb aS Ha BED He LB Bh A a Sm Se esi rl a 1

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Source: National Archives Catalog · NAID 28978476