Denver, Colo., March 1958March 1958

Insufficient Data

Summary

On March 6, 1958, in Denver, Colorado, a civilian observer reported seeing a bright object described as a ball bigger than a full moon. The object displayed a green flash and red tail with green and white flashes before burning out. The observation lasted about 3 to 4 seconds. The object moved to the north and northwest, then to the north and east, and arced across the sky before burning out. Ground-visual observation was made. Multiple witnesses included a CAA tower operator at Stapleton Airport and United Airlines flight crew over the Denver area. The Air Force evaluation was listed as 'Probably very bright meteor.'

Reported location

Denver, Colo., March 1958

Date of incident

March 1958

State / country

? / XX

Page count

3 scanned pages

USAF evaluation

unknown

Microfilm

T1206, Roll 32

Original case file scans

Original case file · scanned by NARAPage 1 of 3

View transcribed text

PROJECT 10073 RECORD CARD

1. DATE
6 Mar 58

2. LOCATION
Denver, Colo.

3. DATE-TIME GROUP
Local
GMT 0620800 0430 0622Z

4. TYPE OF OBSERVATION
[X] Ground-Visual [ ] Ground-Radar
[ ] Air-Visual [ ] Air-Intercept Radar

5. PHOTOS
[ ] Yes
[X] No

6. SOURCE
Civilian

7. LENGTH OF OBSERVATION
3-4 secs

8. NUMBER OF OBJECTS
3-4

9. COURSE
NE & NW

10. BRIEF SUMMARY OF SIGHTING
Fiery Ball, as big or bigger than a full moon. Green flash, red tail w/ green & white flashes. Burned out.

11. COMMENTS
Probably very bright meteor.

12. CONCLUSIONS
[ ] Was Balloon
[ ] Probably Balloon
[ ] Possibly Balloon
[ ] Was Aircraft
[ ] Probably Aircraft
[ ] Possibly Aircraft
[ ] Was Astronomical
[ ] Probably Astronomical
[X] Possibly Astronomical
[ ] Other
[ ] Insufficient Data for Evaluation
[ ] Unknown

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Source: National Archives Catalog · NAID 28977360