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ODERACS-2 (Orbital Debris Radar Calibration Sphere 2) was a series of six spheres deployed from the shuttle mission STS-63, ODERACS-2A through -2. The purpose of the Orbital Debris Radar Calibration Sphere experiment was to calibrate the radars and telescopes used for orbital debris measurements by putting passive objects of known size and shape into orbit. The objects were 2, 4, and 6 inch spheres and three wire dipoles.^[1]

The ODERACS satellites launched aboard the Space Shuttle Discovery on 4 February 1995, at 04:57 from Kennedy Space Center's Launch Pad 39B alongside Spartan 204-F1. They were placed into a 51.6° orbit.

Specifications


Satellite	COSPAR ID	SATCAT number	Shape
ODERACS-2A	1995-004C	23471	15 cm sphere
ODERACS-2B	1995-004D	23472	10 cm sphere
ODERACS-2C	1995-004E	23473	5 cm sphere
ODERACS-2D	1995-004F	23474	13.3 cm dipole
ODERACS-2E	1995-004G	23475	13.3 cm dipole
ODERACS-2F	1995-004H	23476	4.4 cm dipole

References

^ "ODERACS". Gunter's Space Page. Retrieved 14 July 2022.

ODERACS 2A National Space Science Data Center (NASA GSFC) This article incorporates text from this source, which is in the public domain.

v t e ← 1994 Orbital launches in 1995 1996 →
January	Intelsat 704 Express 1 Tsikada 1, Faisat 1, Astrid 1 Apstar 2 USA-108
February	STS-63 (SPARTAN-204, ODERACS 2A, ODERACS 2B, ODERACS 2C, ODERACS 2D, ODERACS 2E, ODERACS 2F Progress M-26 Foton #10
March	STS-67 Kosmos 2306 Kosmos 2307, Kosmos 2308, Kosmos 2309 Soyuz TM-21 SFU, Himawari 5 Kosmos 2310 Intelsat 705 Kosmos 2311 USA-109 Gurwin 1, EKA-2, UNAMSAT-A Brasilsat B2, Hot Bird 1
April	Orbcomm FM1, Orbcomm FM2, OrbView-1 Ofek-3 AMSC-1 Progress M-27 ERS-2
May	USA-110 Intelsat 706 Spektr GOES 9 Kosmos 2312 USA-111
June	Kosmos 2313 DirecTV-3 STEP-3 STS-71 Kosmos 2314
July	Kosmos 2315 Helios 1A, Cerise, UPMSat USA-112 STS-70 (TDRS-7) Progress M-28 Kosmos 2316, Kosmos 2317, Kosmos 2318 USA-113
August	Interbol 1, Maigon 4 PAS-4 Koreasat 1 Molniya 3-59 GEMStar 1 JCSAT-3 N-STAR a Kosmos 2319 Sich-1, FASat-Alfa
September	Soyuz TM-22 STS-69 (SPARTAN-201, WSF) Telstar 402R Resurs-F2 #10 Kosmos 2320
October	Kosmos 2321 Progress M-29 Luch-1 Astra 1E STS-73 USA-114 METEOR Kosmos 2322
November	Radarsat-1, SURFSAT USA-115 STS-74 (SO) ISO Gals 2 AsiaSat 2
December	SOHO USA-116 Télécom 2C, INSAT-2C Kosmos 2323, Kosmos 2324, Kosmos 2325 Galaxy 3R Progress M-30 Kosmos 2326 IRS-1C, Skipper EchoStar I RXTE
Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ). Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).

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