PROJECT BLUE BOOK

PROJECT 10073 RECORD CARD
1. DATE 2. LOCATION 12. CONCLUSIONS
Was Balloon
26 Apr 62 Denville, Illinois. 000 Probably Balloon
3. DATE-TIME GROUP 4. TYPE OF OBSERVATION Possibly Balloon
12 Was Aircraft
Local Ground-Visual Ground-Radar 000 Probably Aircraft
GMT_ 27/0100Z Air-Visual Air-intercept Rodar Possibly Aircralt
5. PHOTOS . SOURCE 0 Was Astronomical
Yes 00 Probobly Astronomicol
No Civilian Possibly Astronomicol
7. LENGTH OF OBSERVATION 8. NUMBER OF OBJECTS 9. COURSE Other
000 Insufficient Data for Evaluation
Unknown
3 min
10. BRIEF SUMMARY OF SIGHTING ODO1 luninous ob,jt 1/2 11. COMMENTSUPDEI air observation bolloon
bright as Venus considered cireular of released at Peiorin . at 2300', Winds fm
spherical with light at base. Observed through 280° at 50,000 were 23 knots. Wind
121/2^° reflecting telescope, by omature would carry balloon over Danville at
actronomer while looking for comet seki-lines approximately Olooz/27 April.Balloon
Elevation increasing. light also visible, elevation inereasing
Balloon considered to be objt of sighting.
)
ATIC FORM ATIC FORM 26 SZP 52)
1 .
.
.

ACTION/
PAB320CZCS*C353ZONUA539 3)05
PP RJEDSS
DE RJEDNU 10 30 AP62 19 278
-
212
? 3012302 ..PRIORITY 4X2a
FH T TECH TNG CEN ATC CHANUTE AFB
-
TO RJNFAL/ADC ENT AFB COLO
RJEDEO/ATIC WPAFD OHIO
RJEZHO/HO UEAF UASH 25 DC
HJEZHO/OSAF WASH 25 DC
AT
UNCLAS OSDIID
THE FOLLOWING REPORT IS SUBMITTED IN ACCORDANCE WITH AFR 230-2,
PARAGRAPH 15: PARAGRAPH 1 15:
A. DISCRIPTION OF OEJECT DISCRIPTION OF OBJECT
(1) CIRCULAR - POSSIBLY SPHERICAL, BUT (1) CIRCULAR - POSSIELY Y SPHERICAL, BUT COULD NOT BE DETERMINED BE DETERMINED
BECAUSE DEPTH COULD NOT BE SEEN.
(2) BY TELESCOPIC SIGNTINC, IT APPEARS TO BE APPRO"INATELY (2) BY TELESCOPIC SIGHTINC, IT APPEARS TO BE APPROYIMATELY
TWICE THE SIZE OF VENUS. COULD BE FEEN BY NAKED EVE. TWICE THE SIZE OF VENUS, COULD BE FEEN BY NAKED EYE.
(3) OPAL, LUINOUS, (3) OPAL, LUMINOUS, APPROTIKATELY Y ONE Y ONE HALF HALF AS BRIGHT AS AS BRIGHT AS VENUS VENUS
(4) ONE 1
-
-
SAGE TWo RJEmy 1s
(5)1A
.

(7) APPEARS TO HAVE LIGNT AT BACE OR 1SD DEGAEES SHION IF APPRO'-
IMATE SIZE OF 1 DECREEC OF THE CIRCUMVERENCE (VIRABLE BY TELENCOPIC
IGHTING ONLY)
(8) NONE
(
(9) N/A
B. DIECRIPTION OF COURCE OF OBJECT -
(1) SEARCHING FOR SCHI - LINES CONET (
(2) 11 DEGREES ALTITUDE 300 DEGREEC AZIMUTH
(3) APPRONINATELY THE SANE
(4) 1 TRAVELS A APPROXIMATELY ONE KALF DEGREES IN 30 SECONDS DIRECTION
TO THE NORTH WITH ELEVATION INCREASING
(5) CUDDEN DISINTEGRATION INTO PARTICLES, LUNINIOUS IN NATURE -
(BY TELESCOPE) TO NAKED EVE IT JUST GOES OUT.
(6) 3 MINUTES 190SL/26 TO 1933L/26 APR BY WITNEFF. 0THER
ODCERVATION 1855/26 APR BY CNAXED D EYE) (
C. MANNER OF OESERVATION
(1) GROUND (1) GROUND VISUAL
(2) (2) TELESCOPE - REFLECTING 12 TELESCOPE - REFLECTING 12 ONE HALFINCHES F8 HALFINCHES F8
•
5 J
(
PAGE THREE RJEDNU 10
(3)N/A
. TIME AND DATE OF SIGNTING
(1) 3100Z/27 APR C2
(2)_DUEK -
LOCATION OF OBSERVER: 40 DEGREES 7" N LAT, S4-36 W LONG (
MAVILLE, ILLINOIS
1
.

(1) GROUND VIEDAL
(2) TELERCOPE - REFLECTING 12 ONE MALFIHCHES FE
(
PAGE THREE RJEDNU 10
(3) N/A
D. TIME AND DATE OF A SIGHTING
(1) 3 0130Z/27 APR 62
(2) DUSK
E. LOCATION OF OBSERVER: 40 DEGREES 7" N LAT, 84-36 W LONG
DANVILLE, ILLINOIS DANVILLE, ILLINOIS
F.I IDENTIFYING IDENTIFYING INFORMATION ON INFORMATION ON OBSERVER. OBSERVER.
(1) MR. AGE 46, DANVILLE, ILL.
PHOTO FINISHER, LEVEL OF SCHOOL 61, B.S. DEGREE IN CENERAL PHOTO FINISHER, LEVEL OF SCHOOL 61, B.S. DEGREE IN GENERAL
BUSINESS FROM UNIVERSITY OF ILL IS3S - ANATURE ASTRONOMER. MEMBER BUSINESS F FROM UNIVERSITY OF ILL ISSS - AMATURE ASTRONOMER. NEMBER
OF DANVILLE ASTRONOMICAL SOCIETY. PHOTO FINISHER OF DANVILLE ASTRONOMICAL SOCIETY. PHOTO FINISHER FOR LAST 1s YRS FOR LAST 12 YRS
WORK RECUIRES SONE WORK RECUIRES SOME DEGREE OF TECHNICAL KNOULEDGE DEGREE OF TECHNICAL KNOULEDGE
G. WEATHER AND WINDS ALOFT CONDITIONS TIME AND PLACE OF SIGHTING:
(1) CLEAR - BELON 80 DEGREES F
(2) SURFACE 181/14 GN 210/16 10M 209/23
16M 243/16 2911 250/14 33M 218/23
SOM 280/23 SDN NOT AVAILABLE
(3) NONE
(4) 12 MI
(5) 1/10-2/10 CIRRUE -
(
1
.

PAGE FOUR RJEDNU 10
(6) NONE
(7) SURFACE TEMP OF 22 DEGREES C WITH GRADIENT OF 3 DEGREES PER
THOUSAND FEET OF ALTITUDE
H. A NONE
I. NONE
J. APPRONIMATELY 23ZDZ COLUMBIA, MO AND PEORIA, ILL
US V WEATHER BUREAU RELEASE UPPER AIR OBSERVATION BALLONS
K. PREPARING OFFICER, CAPT ROBERT E. BOOTH, AO333Z999, 3361ST
INCTRUCTOR 3C., CHANUTE AFB, ILLINOIC, BE LIEVES THAT THE GROUND
SIGHTING WAS A UPPER AIR OBSERVATION BALLOI RELEASED BY FACILITIES
HENTIONED IN PAR I ABOVE. .
WITNESS STATES THAT A BALLON OVER RANTOUL, I ILLINOIS SIZE APPROX
52 1 53 INCHES DIANETER WOULD GIVE THE APPEARANCE OF THE SIGHTING IN THE APPEARANCE OF THE SIGHTING
G IN THE
TELESCOPE, THE CLOSER TO DANVILLE IT MOVED THE SMALLER THE TELESCOPE, THE CLOSER TO DANVILLE IT MOVED THE SMALLER THE
DIAMETER WOULD DIAMETER ? WOULD : : NEED TO BE TO CIVE SAME APPEARANCE. OTHER SIGNTINGS NEED TO DE TO CIVE SAME APPEARANCE. OTHER SIGNTINGE
IN THE IN THE A AREA WERE TO CLOCE FOR ANY USEFUL TRIANGULATION. OTHER AREA WERE TO CLOCE FOR ANY USEFUL TRIANGI OTHER
WITNESSES OF THE SIGNTING WITNESSES OF THE SIGNTING WER
DANVILLE. DANVILLE DANVILLE
AND MR. AND MR. NVILLE. ALL VITNESSES
ARE BELIEVED TO CE RELIABLE.
BT
30/16067 APR RJEDNU
.