PROJECT BLUE BOOK

F
PROJECT 10073 RECORD CARD
1. DATE 2. LOCATION 12. CONCLUSIONS
0 Was Balloon
23_April 1957 Harrow-Weald.England 0 Probably Bolloon
3. DATE-TIME GROUP 4. TYPE OF OBSERVATION 0 Possibly Balloon
Local .Ground-Visual Ground-Radar OX Was Aircraft
¤ Prcbably Aircraft
GMT23/2050Z GMT 23/20507 Air-Visuai Air-Visuai Air-Intercept Radar Air-Intercopt Radar Possibly Aircraft
5. PHOTOS PHOTOS 6. SOURCE SOURCE 0 0 Was Astronomical
Y.s Ys 00 0 Probably Astronomical
No Civilian D Possibly Astronomical
7. LENGTH OF OBSERVATION . NUMBER OF OBJECTS 9. 9. COURSE Othor_ Othor_
000 Insufficient Dota for Evaluation
30-60 seconds Unknown
one maneuvered
I0. BRIEF SUMMARY OF SIGHTING 0. BRIEF SUMMARY OF SIGHTING 11. COMMENTS
Red object 3X brightness of Jupiter Sighting was characteristic of
changing in color to orange changing in co orange when a/c and case a/c and case is evaluated as a/c
direction changed observed while direction changed while
Comet under observat . Initial
observation at 45 levation,
final observation igr elevation.
Changes in direction were sharp and
angular. Duration 30-60 seconds.
ATIC FORM 329 (REV 26 3ZP 52)

ATIC
0943 {}
JD8114CJF1027131 281
M HJIDIN RJEDWP RJEPHO RJFPBW 1
LEIJIITA 4E4
1 2018457 ¸
34×2a
Mn CCHR THIRD AF SOUTH RUISLIP ENGLAND $\sq}$
TO ALILEN/CONDR ADC ENT AFE COLORADO
NOEIP/CCHDA ATIC NRIGHT (
I PATTIRSON AFT CHIO atic
AUEPHO/OONS VASHINGTON DC. (
THFC RJPPHN/CINCUSAFE WIESTADEN GERTANY (
ST
/INCLAS/30IN-2 7 7D-117. UFOB. USAF: PASS TO (
FOIN. 1. DESCRIPTION OF ORJECT: A. SHAPE-OBJICT WAS ROUND. -
WNETHER DISC OR BSLL SHAPED COULD NOT TE DETAPMINED. B. SIZE-
APPROXIKATALY 3 TIMES THE SIZE OF THE PLANET APPROXIMATELY 3 T TIMES THE SIZE OF THE PLANET JUPITER. C. COLOR-
RED, NOWEVER RED, NOWEVER CHANGED TO FRIGHT CRANGE AT THE APEX OF CHANGE IN CHANGED TO FRIGHT GRANGE AT THE APEX OF CHANGE IN
COURSE. D. NUNBER-ONE (1) OEJECT. E. FORMATION-NEGATIVE COURSE. D. NUNBER-ONE (1) OFJECT. E. FORMATION-NEGATIVE
T. FEATIRES OR DETAILS-- NONE OTHER THAN SHAPE AND SIZE COULD T. FEATIRES OR DETAILS-- NONE OTHER THAN SHAPE AND SIZE COULD
L LLTERKINED. G. TAIL TRAIL CR EXHAUST-NEGATIVE. H. SOUND- L LLTLRKINED. G. TAIL TRAIL CR EXHAUST-NEGATIVE. H. SOUND-
SATIVE. I. OTHER FEATURES-NEGATIVE. . DESCRIPTION OF SATIVE. I. OTHER FEATURES-NEGATIVE. 3. DESCRIPTION OF -
COURSL OF OBJECT: A. MY WIFE.AND I COURSL OF OBJECT: A. MY WIFE.AND I WERE ATTEIPTING TO LOCATE WERE ATTENPTING TO LOCATE
T
(
PAGE THO RJDITA'19S
THE COOUT THAT NAS TO PASS SATVEEN THE EARTY AHI THE SUN.
.OT AVCLING RAENE THE CONET COULD SE LGCATED WE SERE
SSCARNG TA MLIRA SKY.. VIRST CSEAVED
AOI ATELY AS DENRMIS ELMVATIO TRCH HORIZON IN TID SST.
. LOST TCC VIE'Y APPRCXINATALY 3S DEGRRES ELENATION FHCN
SZCN IN TNE NE. D. DESCRIPTICN CF FLICHT PATHA/ OSJECT
ASTOINITED IN A STRAIGIT LILE, JUST OVER THE TOP OF JUPITER,
whiiV TO EARTH ANDIIAE OL SIGHT. AFTER PASSING JUPITER

THE COMET THAT WAS TO PASS SETWEEN THE EARTH ARD THY SUN.
NOT KNOCING WHERE THE COMET COULD SE LOCATED WH WERE
SEARCHING' THA ENTIRE SKY. B. FIRST OFSERVED.
APPROXIMATELY 45 DEGRELS ELEVATION FROM HORIZON IN THE SSZ.
C. LOST FORM VIDO APPROXINATELY 3 DECRRES ELEVATION FRCM
RONIZON IN THE NE. D. DESCRIPTION CF FLICHT PATHEZ ORJECT
SIGITED IN A STRAIGHT LINE, JUST OVER THE TOR OF JUPITER,
LATIVE TO EARTH AND IINE OF SIGHT. AFTER PASSING JUPITEP
THE CJECT PEGANIHANEUVERING AT SHARP S DEGREE ANCLES, FIRST
LING A 4S LEGREE ANGLE CONTINUING A LEVEL FLIGHT IN A
E DIRACTION. CHANGES IN DIRECTION VERS,SHARP AND DEFINED, -
ADCOMPANIED BY A CHANGE IN CCLOR FROM TME NORMAL REL TO A
TRIGHT ORANGE GNLY AT THE APEX OF EACH ANGLE. CHANGE OF CCLOR.
WES ONLY A MEHENTARY CHANGE EXACTLY AT THE POINT OF THE ANGLE
OF THE CHANGR OF DIRECTION AND IMMEDIATELY RETURNED TO RED.
E. ONJECT DISAPPEARED FRON VIEM FY DIMINISHING IN SIZE DUE TO
TRAVELING ANAY FRO4-US-F.-LENSTH OF TIVE IN SIGHT WAD
APPACXIRATALY 3. TO 6 SECONDS. 3. MANNER OF CESERVATION: APPRCXIMATALY 59 TO G SECONDS. 3. MANNER OF CESERVATION:
A. GROUND-VISDAL. E. OPTICAL AIES-NEGATIVE. 4. TINE A. GROUND-VISUAL. E. OPTICAL AIES-NEGATIVE. 4. TINE
(
PAGE THAEE RUDLTA 122
AND DOATA OF SIGHTING: A. BISD NOURS ZULU (015. LOCAL), 23 APPIL
1957. B. LIGHT CONDITI N-NIGHT. 5. LOCATION CF OBSERVERS:
o XARRCU-WEALD, MIDDY 6. OFSERVERS:
A. CIVILIAN-MRS. AGE 25,
HARROW-HALD HI ENGLAND. E. MILITARY-C/SGT RICHARD
JOHNSON, 75 8TH AIR ASD GRCUP, APC 2ID. RELEAN ILITY -
LNKICM. 7. VEATMLR: IDEAL NEATHER PREVAILED AT THE TINE OF
SIGHTING. THERE VERE NO CLOUDS, NC YOON AND THE ATMOSPHERE
TLIENED STARS TC LN SAEN OUITD WELL DEFLMED. AT THE TIME CF
ASATIS, A VEAY SLIGH ERLEZE MAS LOMING. E. COPCLISIONS:
COMET FASSIN ZARTH MAS IN THE OPPCSITE DIRECTION OF
LOMOT, THE EFOHK CVJECT COULD NOT HAVE BTEN PART OF THE COMET.
.T.CRL WERE GC ADIEICAL LIETEVE CARRIED LBY AIPCRAFT
TINGE AND TAIL AND MOTOUND NAS mt 1ROT

ONKNONN. 7. WEATHER: IDEAL WEATHER PREVAILED AT THE TIME OF
SIGHTING. THERE WERE NO CLOUDS, NO MOON AND THE ATMOSPHERE
ALLOWED STARS TO BE SEEN OUITE WELL DEFINED. AT THE TIME OF (
SIGATING, A VEAY SLIGH EREEZE VAS BLOWING. 3. CONCLUSIONST
A. COMET PASSIN EARTH WAS IN THE OPPOSITE DIRECTION OF
CLULCT, THE EFORE CVJECT COULD NOT HAVE BFEN PART OF THE COMET. -
D. T.LRE WERE AC ADDITICAL LIGTTSVAS CARRIED BY AIRCEAFT
C. VINGS AND TAIL AND MOSOUND WAS ENITTED FROULOEJECT, -
TAAVELED TO FAST TO BE A TALLON. D. CFJECT COULD NOT TE A
GROONE LIGHT BECAUSE OF THE DISTANCE IT TRAVELED AND THERE
MOTLING IN THE SKY TO REFLECT GROUND LICHTS. E. OEJECT WAS
NOT A METEOR DUE TO ERRATIC COURSE TRAVELED.
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1
objects against night typical hundreds received during the
high altitudes can manifest Chemselves day or without being
aftew DATE TIME
heard. During G can be observed 30 1430
A
MONTH YEAR
Apr 57
SYMROL SIGNATURE
AFOIN-4E4
TYPED NAME AID TITLESRZI TYPED (or JAMPed) NAME AND TITLE
George T. Gregory Capt, USAF
ONE 70226 PAGE 7 An.OF ?
N. PAGES
EN UIITY CLASDIICATION
DD FORM T PLACES LD FORM 172. 166r 40. WHICH WILL DE USED UNTIL EXHAUSTED
MAY SS 1

wil not
be observed if jet at high altitudes.
- -
par 7d, AFR 200-2,regarding military and civil flights, intercept, 4
night training or test flights, and other operations night training or within that
general and area.
COORDINATTON:
AFOIN-4E4
AFOIN-4E DATE TIME
30 1430
Col/H. K. Gilhert
MONTH YEAR
AFOIN-4X1 Apr 57
DYMBOL SIGNATURE
AFOIN-4E4 2 ? Mallaceh
TYPED NAME AND TITLE (SISCA. Ogony TYPED (on amDOd)N
Ceorge T. Gregory, Capt, USAF CWJWKOUC
OND 70226 PAGE NR. PACES NR. 2
WALLACE W. ELWOOD
UFITY CLASUIFICATION Captain, USAF
Assistant Adjutant
DD FORM P 1 WHICH WILL BE USED UNTIL EXHAUSTED
I MAY 55 :

59117
milles
9Mar 57 07 36 t. huld 6.30AM
PICKWP -
Gt PREVIOUSLY RELEASED, CHECK
WPHo43WPGD 1D YDA163 JYA252 JDC138 BEFORE TAKING ACTION.
09/01312
PP RJEDWP RJEDEN RJEPHQ
ZFD RJEZTAAL15 464
RR RJADWP RJEPHQ RJEDEN RJFPPW
DE RJDLTA 139
RM 051510Z R M 031510 2 F hllD
FM COMDR THIRD AF SOUTH RUISLIP ENGLAND FM COMDR THIRD AF SOUTH RUISLIP ENGLAND
TO RJEDWP/COMDR ATIC WRIGHT-PATTERSON TO RJEDWP/COMDR ATIC WRIGHT-PATTERSON AFB OHIC OHIC
INFO RJEPHO/COFS HO USAF WASH D C
RJEDEN/COMDR ADC ENT AFE COLO
RJFPEW/CINCUSAFE WIESBADEN WIESBADEN GERMANY GERMANY
ET
UNCLASSIFIED 30INB-2 UE-323. REFERENCE YOUR UNCLASSIFIED 30INE-2 UE-323. REFERENCE YOUR MESSAGE MESSAGE
AFCIN-4E4 5-591-E THE FOLLOWING INFORMATION N IS SUBMITTED: FLIGHT
NO
SERVICE REPORTS THERE WERE E O USAF AIRCRAFT IN THE GENERAP AREA
WITHIN TEN MINUTES OF THE TIME OF SIGHTING. LONDON CONTROL STATES
THERE WERE NO AIRCRAFT ON THE REPORTED COURSE CR TRACK WITHIN THE
LONDCN CONTROL ZONE. ALL RAF FLIGHTS ANTER DARK ARE CONTROLLED AS
INSTRUMENT METEOROLOGICAL CONDITION FLIGHTAGO THE RAF FLIGHT
INFORNATION CENTER AT UXBRIDGE REPORTS THAT NO RAF MILITARY AIRCRAFT
WERE WITHIN SIGHT OF REPORTING POINT AT THAT TIME. THE WINDS AT THE
OF THE SIGHTING WERE FROM THE NORTH EAST FRCM THE GROUND TO 35,000
FEET, AT WHICH ALTITUDE THE WINDS BEGAN BACKING TOWARDS THE NORTH.
NO RADAR PLOTS OF THIS OBJECT CAN BE I IDENTIFIED.
071745ZMAY RJDLTA