9

Part One

Characterization Data

Diameter vs. Altitude

B

B

B B

B

B

B

B

B

B

B

B

B

B

B

B

0.00001

0.0001

0.001

0.01

0.1

1

10

20

0

200

400

600

800

1000

1200

1400

1600

1800

2000

EURECA-1

Hubble Space Telescope

Palapa B2

Westar 6

LDEF

Solar Maximum Mission

Clementine Interstage Adapter

STS Windows & Radiators

Mir

Aricibo

Goldstone

Haystack

USSPACECOM

NASA Telescopes

ETS

GEODSS

J

J

J

J

J

J

J

J

J

J

J

J

J

J

J

J

Diameter (cm)

Altitude (km)

EURECA-1 Hubble Space Telescope

Palapa B2

Westar 6

LDEF

Solar Maximum Mission

Clementine Interstage Adapter

STS Windows & Radiators

Mir

Aricibo

Goldstone

Haystack

USSPACECOM

NASA Telescopes

ETS

GEODSS

Characterization Data

Diameter vs. Year

B

B

B

B B

B

B

B

B

B

B

B

B

B

B

0.00001

0.0001

0.001

0.01

0.1

1

10

20

1/1/80

1/1/82

1/1/84

1/1/86

1/1/88

1/1/90

1/1/92

1/1/94

EURECA-1

Hubble Space Telescope

Palapa B2

Westar 6

LDEF

Solar Maximum Mission

Clementine Interstage Adapter

Mir

Aricibo

Goldstone

Haystack

USSPACECOM

NASA Telescopes

ETS

GEODSS

B

B

B

B

B

B

B

B

B

B

B

B

B

B

B

Diameter (cm)

Year

EURECA-1

Hubble Space Telescope

Palapa B2

Westar 6

LDEF

Solar Maximum Mission

Clementine Interstage Adapter

Mir

Aricibo

Goldstone

Haystack

USSPACECOM

NASA Telescopes

ETS

GEODSS

STS-1

STS-2

STS-3

STS-4

STS-5

STS-6

STS-7

STS-8

STS-9

STS11/41B

STS-41C

STS-41D

STS-41G

STS-51A

STS-51C

STS-51D

STS-51B

STS-51G

STS-51F

STS-51I

STS-51J

STS-61A

STS-61B

STS-61C

STS-26

STS-27

STS-29

STS-30

STS-28

STS-34

STS-33

STS-32

STS-36

STS-31

STS-41

STS-38

STS-35

STS-37

STS-39

STS-40

STS-43

STS-48

STS-44

STS-42

STS-45

STS-49

STS-50

STS-46

STS-47

STS-52

STS-53

STS-54

STS-56

STS-55

STS-57

STS-51

STS-58

STS-61

STS-60

Figure 5. Data Sources for the
Definition of the Space
Environment

Figure 6. The Relationship of
Various Data Acquisition
Sources to Each Other and
the Natural and Man-Made
Environment