# February 4, 1953 — Yuma, AZ — Theodolite Tracking of Two Elliptical Objects

**URL:** https://uapdiscovery.discourse.group/t/february-4-1953-yuma-az-theodolite-tracking-of-two-elliptical-objects/486
**Category:** Blue Book Unknowns
**Created:** [February 4, 2026, 12:57am UTC](https://uapdiscovery.discourse.group/t/february-4-1953-yuma-az-theodolite-tracking-of-two-elliptical-objects/486 "2026-02-04T00:57:03Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![jeffknox](https://avatars.discourse-cdn.com/v4/letter/j/e47c2d/32.png) [@jeffknox](https://uapdiscovery.discourse.group/u/jeffknox)
#### Post date: [February 4, 2026, 12:57am UTC](https://uapdiscovery.discourse.group/t/february-4-1953-yuma-az-theodolite-tracking-of-two-elliptical-objects/486/1 "2026-02-04T00:57:03Z")

</div>

![02041953-YumaAz-BBSketch](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/d/d7766fb4556b3868790e924dc37c6b5130431010.jpeg)

February 4, 1953 — Yuma, AZ  
1:50 p.m. US Weather Bureau observer Stanley H. Brown in Yuma, Arizona, tracks with a theodolite a white, oblong object. It is surrounded by a thin white mist and flies straight up and levels off. After 20 seconds, the object is joined by a second one that flies away twice and returns. Both are lost to sight behind clouds to the south-southwest. The sighting lasts 5 minutes. [Eberhart]

BB Record Card:

 ![02041953-YumaAz-BBCard](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/0/0c8c8f3b93421a509b6fdf97abafd3a14b2adb8e.jpeg)

Sighting Report:

 ![02041953-YumaAz-BBSightingReport](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/d/dc600b869aa48fa89f3263cd4819f143226daa6b.jpeg)

Sources:  
Brad Sparks, Blue Book Unknowns, Case 925, p. 191;

 ![02041953-YumaAz-Sparks-p191](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/9/954ab942b4fc87d9f26b23fc49179aeb443468c3.png)

Project Blue Book Special Report 10;

 ![02041953-YumaAz-PBSR10-p203](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/6/646c8720b7d7c1c948a8a3f6d140c30836b643c2.png)

James McDonald Files, 15YUMA53;

 ![02041953-YumaAz-McDonaldFile-1](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/7/78fdc4a5e047597a1ff93842f47dc275be223b99.jpeg)

 ![02041953-YumaAz-McDonaldFile-2](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/d/dc8b4a4bed611ecdc2bd45e81d4e1b0bb798b1ca.png)

 ![02041953-YumaAz-McDonaldFile-3](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/0/0193a3bfda8d8d319977233c93ea724dfc29ce4a.png)

NICAP, “Theodolite Tracking of Two Elliptical Objects”;

> **[UFO Report](http://www.nicap.org/530204yuma_dir.htm)**

James E. McDonald, “Statement on Unidentified Flying Objects,” in Symposium on Unidentified Flying Objects, Hearings, US House Committee on Science and Astronautics, 90th Cong., 2nd Sess., July 29, 1968, pp. 62–63;

 ![02041953-YumaAz-McDonald](https://canada1.discourse-cdn.com/flex011/uploads/uapdiscovery/original/2X/f/f02ed42ea7fa86ab1447e6a99adc913e26b5eb99.png)

> **[SHG - UFO Symposium 1968: McDonald Statement](https://www.project1947.com/shg/symposium/mcdonald.html#meteorologists)**