[ Table of contents ]

Annex D
(normative)

RDs associated with physical objects

D.1    Introduction

This annex presents the specification of RDs whose parameters are determined as a result of measurements of a physical object. Parameter values are specified by value or by reference. Parameters specified by reference use the terminology of the cited references. Those terms are be enclosed in brackets ( { } ). Referenced values in length units other than metres are converted to metres to specify the corresponding RD parameter. The zero value of flattening for a sphere RD is a precise value.

D.2    RDs

The fields of an ORM specification are defined in Table 7.9. Table D.1 is a directory of these RDs organized by the type of RD surface. The RD entries in each table are grouped by physical object type and then ordered alphabetically by their label. Table D.1 includes RD specified in this annex and deprecated RDs specified in Annex J.

Table D.1 — RD specification directory

RD specification table

Tables

non-sphere Oblate ellipsoid RD specifications

Table D.2 and Table J.2

Sphere RD specifications

Table D.3 and Table J.3

Prolate ellipsoid RD specifications

Table D.4 and Table J.4

Tri-axial ellipsoid RD specifications

Table D.5 and Table J.5

 

 




Table D.2 — Oblate ellipsoid RD specifications

Label

Code

Description

Parameters

Date

References

Major semi-axis, a

Flattening, f

Error estimate

Object type: Earth

AIRY_1830

17

Airy

6 377 563,396

1/299,324 964 6

Assumed precise

1830

[83502T, App. A-1, “AA“]

APL_4r5_1968

20

APL 4.5

6 378 144

1/298,23

Unknown

1968

[DIGEST, Table 6.1, “AP“]

AUSTRALIAN_NATIONAL_1966

23

Australian national

6 378 160

1/298,25

Assumed precise

1966

[83502T, App. A-1, “AN“]

AVERAGE_TERRESTRIAL_1977

24

Average terrestrial system

6 378 135

1/298,257

Unknown

1977

[DIGEST, Table 6.1, “AT“]

BESSEL_1841_ETHIOPIA

26

Bessel (Ethiopia, Indonesia, Japan, and Korea)

6 377 397,155

1/299,152 812 8

Assumed precise

1841

[83502T, App. A-1, “BR“]

BESSEL_1841_NAMIBIA

27

Bessel (Namibia)

6 377 483,865

1/299,152 812 8

Assumed precise

1841

[83502T, App. A-1, “BN“]

CLARKE_1858

33

Clarke

6 378 235,6

1/294,260 676 8

Unknown

1858

[DIGEST, Table 6.1, “CA“]

CLARKE_1858_MODIFIED

34

Clarke - modified

6 378 293,645

1/294,26

Unknown

1858

[DIGEST, Table 6.1, “CB“]

CLARKE_1866

35

Clarke

6 378 206,4

1/294,978 698 2

Assumed precise

1866

[83502T, App. A-1, “CC“]

CLARKE_1880

36

Clarke

6 378 249,145

1/293,465

Assumed precise

1880

[83502T, App. A-1, “CD“]

CLARKE_1880_CAPE

37

Clarke - Cape

6 378 249,145

1/293,466 307 7

Unknown

1880

[DIGEST, Table 6.1, “CE“]

CLARKE_1880_FIJI

38

Clarke - Fiji

6 378 301

1/293,465

Unknown

1880

[DIGEST, Table 6.1, “CJ“]

CLARKE_1880_IGN

39

Clarke - IGN

6 378 249,2

1/293,466 020 8

Unknown

1880

[DIGEST, Table 6.1, “CG“]

CLARKE_1880_PALESTINE

40

Clarke - Palestine

6 378 300,782

1/293,466 307 7

Unknown

1880

[DIGEST, Table 6.1, “CF“]

CLARKE_1880_SYRIA

41

Clarke - Syria

6 378 247,842

1/293,466 351 7

Unknown

1880

[DIGEST, Table 6.1, “CI“]

DANISH_1876

45

Danish - Andrae

6 377 104,430

1/300

Unknown

1876

[DIGEST, Table 6.1, “DA“]

DELAMBRE_1810

47

Delambre

6 376 985,228

1/308,64

Unknown

1810

[DIGEST, Table 6.1, “DB“]

EVEREST_1948

57

Everest

6 377 304,063

1/300,801 7

Assumed precise

1948

[83502T, App. A-1, “EE“]

EVEREST_1956

58

Everest

6 377 301,243

1/300,801 7

Assumed precise

1956

[83502T, App. A-1, “EC“]

EVEREST_1969

60

Everest

6 377 295,664

1/300,801 7

Assumed precise

1969

[83502T, App. A-1, “ED“]

EVEREST_ADJ_1937

56

Everest 1830 - adjusted

6 377 276,345

1/300,801 7

Assumed precise

1937

[83502T, App. A-1, “EA“]

EVEREST_BRUNEI_1967

61

Everest 1830 - 1967 definition (Brunei and East Malaysia - Sabah and Sarawak)

6 377 298,556

1/300,801 7

Assumed precise

1967

[83502T, App. A-1, “EB“]

EVEREST_REVISED_1962

59

Everest 1830 - revised definition

6 377 309,613

1/300,801 7

Assumed precise

1962

[83502T, App. A-1, “EF“]

FISCHER_1960

62

Fischer - Mercury

6 378 166

1/298,3

Unknown

1960

[DIGEST, Table 6.1, “FM“]

FISCHER_1968

63

Fischer

6 378 150

1/298,3

Unknown

1968

[DIGEST, Table 6.1, “FC“]

GRS_1967

67

Geodetic Reference System (GRS)

6 378 160

1/298,247 167 4

Unknown

1967

[DIGEST, Table 6.1, “RE“]

GRS_1980

68

Geodetic Reference System (GRS)

6 378 137

1/298,257 222 101

Assumed precise

1980

[83502T, App. A-1, “RF“]

HELMERT_1906

70

Helmert

6 378 200

1/298,3

Assumed precise

1906

[83502T, App. A-1, “HE“]

HOUGH_1960

72

Hough

6 378 270

1/297

Assumed precise

1960

[83502T, App. A-1, “HO“]

IAG_1975

74

International Association of Geodesy (IAG) best estimate

6 378 140

1/298,257

Unknown

1975

[DIGEST, Table 6.1, “IA“]

INDONESIAN_1974

77

Indonesian

6 378 160

1/298,247

Assumed precise

1974

[83502T, App. A-1, “ID“]

INTERNATIONAL_1924

78

International

6 378 388

1/297

Assumed precise

1924

[83502T, App. A-1, “IN“]

KRASSOVSKY_1940

84

Krassovsky

6 378 245

1/298,3

Assumed precise

1940

[83502T, App. A-1, “KA“]

KRAYENHOFF_1827

85

Krayenhoff

6 376 950,4

1/309,65

Unknown

1827

[DIGEST, Table 6.1, “KB“]

MODIFIED_AIRY_1849

97

Modified Airy

6 377 340,189

1/299,324 964 6

Assumed precise

1849

[83502T, App. A-1, “AM“]

MODIFIED_FISCHER_1960

98

Modified Fischer

6 378 155

1/298,3

Assumed precise

1960

[83502T, App. A-1, “FA“]

PLESSIS_MODIFIED_1817

115

Plessis - Modified

6 376 523

1/308,64

Unknown

1817

[DIGEST, Table 6.1, “PM“]

SOUTH_AMERICAN_1969

125

South american

6 378 160

1/298,25

Assumed precise

1969

[83502T, App. A-1, “SA“]

SOVIET_GEODETIC_1985

126

Soviet geodetic system

6 378 136

1/298,257

Unknown

1985

[DIGEST, Table 6.1, “SG“]

SOVIET_GEODETIC_1990

127

Soviet geodetic system

6 378 136

1/298,257 839 3

Unknown

1990

[DIGEST, Table 6.1, “SN“]

STRUVE_1860

128

Struve

6 378 298,3

1/294,73

Unknown

1860

[DIGEST, Table 6.1, “ST“]

WALBECK_AMS_1963

140

Walbeck 1819 - AMS

6 376 896

1/302,78

Unknown

1963

[DIGEST, Table 6.1, “WB“]

WALBECK_PLANHEFT_1942

141

Walbeck 1819 - Planheft

6 376 895

1/302,782 156 5

Unknown

1942

[DIGEST, Table 6.1, “WA“]

WAR_OFFICE_1924

142

War Office - McCaw

6 378 300

1/296

Unknown

1924

[DIGEST, Table 6.1, “WO“]

WGS_1972

146

World geodetic system

6 378 135

1/298,26

Assumed precise

1972

[83502T, App. A-1, “WD“]

WGS_1984

145

World geodetic system

6 378 137

1/298,257 223 563

Assumed precise

1984

[83502T, App. A-1, “WE“]

Object type: Planet (non-Earth)

JUPITER_1988

82

Jupiter

{Equatorial radius (km)}

{Equatorial radius (km)} / ( {Equatorial radius (km)} - {Polar radius (km)} )

As specified accompanying the parameter value

1988

[RIIC, Table IV, “Jupiter“]

MARS_2000

89

Mars

{Equatorial radius (km)}

{Equatorial radius (km)} / ( {Equatorial radius (km)} - {Polar radius (km), AVG} )

As specified accompanying the parameter value

2000

[RIIC, Table IV, “Mars“]

NEPTUNE_1991

105

Neptune

{Equatorial radius (km)}

{Equatorial radius (km)} / ( {Equatorial radius (km)} - {Polar radius (km)} )

As specified accompanying the parameter value

1991

[RIIC, Table IV, “Neptune“]

SATURN_1988

123

Saturn

{Equatorial radius (km)}

{Equatorial radius (km)} / ( {Equatorial radius (km)} - {Polar radius (km)} )

As specified accompanying the parameter value

1988

[RIIC, Table IV, “Saturn“]

URANUS_1988

138

Uranus

{Equatorial radius (km)}

{Equatorial radius (km)} / ( {Equatorial radius (km)} - {Polar radius (km)} )

As specified accompanying the parameter value

1988

[RIIC, Table IV, “Uranus“]

Object type: Satellite

LARISSA_1991

86

Larissa (satellite of Neptune)

{Subplanetary equatorial radius (km)}

{Subplanetary equatorial radius} / ( {Subplanetary equatorial radius} - {Polar radius} )

As specified accompanying the parameter value

1991

[RIIC, Table V, “Larissa“]

METIS_2000

93

Metis (satellite of Jupiter)

{Subplanetary equatorial radius (km)}

{Subplanetary equatorial radius} / ( {Subplanetary equatorial radius} - {Polar radius} )

As specified accompanying the parameter value

2000

[RIIC, Table V, “Metis“]

Object type: Sun

 

 

Table D.3Sphere RD specifications

Label

Code

Description

Parameters

Date

References

Major semi-axis, a

Flattening, f

Error estimate

Object type: Earth

COAMPS_1998

42

Coupled Ocean/Atmospheric Mesoscale Prediction System (COAMPSTM)

{Radius (meters)}

0

a:{ Error estimate}

1998

[ERNWM, Table 1, “COAMPS“]

MASS_1999

91

MASS

{Radius (meters)}

0

a:{ Error estimate}

1999

[ERNWM, Table 1, “MASS“]

MM5_1997

96

Mesoscale (weather) Model 5 (MM5), Air Force Weather Agency (AFWA), US

{Radius (meters)}

0

a:{ Error estimate}

1997

[ERNWM, Table 1, “MM5 (AFWA)“]

MODTRAN_MIDLATITUDE_1989

99

MODTRAN (midlatitude regions)

{Radius (meters)}

0

a:{ Error estimate}

1989

[ERNWM, Table 1, “MODTRAN, Midlatitude“]

MODTRAN_SUBARCTIC_1989

100

MODTRAN (subarctic regions)

{Radius (meters)}

0

a:{ Error estimate}

1989

[ERNWM, Table 1, “MODTRAN, Subarctic“]

MODTRAN_TROPICAL_1989

101

MODTRAN (tropical regions)

{Radius (meters)}

0

a:{ Error estimate}

1989

[ERNWM, Table 1, “MODTRAN, Tropical“]

MULTIGEN_FLAT_EARTH_1989

103

Multigen flat Earth

6 366 707,02

0

Precise

1989

[MFCG]

NOGAPS_1988

107

Navy Operational Global Atmospheric Prediction System (NOGAPS), US

{Radius (meters)}

0

a:{ Error estimate}

1988

[ERNWM, Table 1, “NOGAPS“]

Object type: Planet (non-Earth)

EROS_2000

54

Eros (asteroid 433, a minor planet)

{Mean radius (km)}

0

As specified accompanying the parameter value

2000

[RIIC, Table VI, “Eros“]

MARS_SPHERE_2000

90

Mars

{Mean radius (km)}

0

As specified accompanying the parameter value

2000

[RIIC, Table IV, “Mars“]

MERCURY_1988

92

Mercury

{Mean radius (km)}

0

As specified accompanying the parameter value

1988

[RIIC, Table IV, “Mercury“]

PLUTO_1994

116

Pluto

{Mean radius (km)}

0

As specified accompanying the parameter value

1994

[RIIC, Table IV, “Pluto“]

VENUS_1991

139

Venus

{Mean radius (km)}

0

As specified accompanying the parameter value

1991

[RIIC, Table IV, “Venus“]

Object type: Satellite

ANANKE_1988

19

Ananke (satellite of Jupiter)

{Mean radius (km)}

0

As specified accompanying the parameter value

1988

[RIIC, Table V, “Ananke“]

BELINDA_1988

25

Belinda (satellite of Uranus)

{Mean radius (km)}

0

As specified accompanying the parameter value

1988

[RIIC, Table V, “Belinda“]

BIANCA_1988

28

Bianca (satellite of Uranus)

{Mean radius (km)}

0

As specified accompanying the parameter value

1988

[RIIC, Table V, “Bianca“]

CARME_1988

31

Carme (satellite of Jupiter)

{Mean radius (km)}

0

As specified accompanying the parameter value

1988

[RIIC, Table V, “Carme“]

CHARON_1991

32

Charon (satellite of Pluto)

{Mean radius (km)}

0

As specified accompanying the parameter value

1991

[RIIC, Table V, “Charon“]

CORDELIA_1988

43

Cordelia (satellite of Uranus)

{Mean radius (km)}

0

As specified accompanying the parameter value

1988

[RIIC, Table V, “Cordelia“]

CRESSIDA_1988

44

Cressida (satellite of Uranus)

{Mean radius (km)}

0

As specified accompanying the parameter value

1988

[RIIC, Table V, “Cressida“]

DESDEMONA_1988

48

Desdemona (satellite of Uranus)

{Mean radius (km)}

0

As specified accompanying the parameter value

1988

[RIIC, Table V, “Desdemona“]

DESPINA_1991

49

Despina (satellite of Neptune)

{Mean radius (km)}

0

As specified accompanying the parameter value

1991

[RIIC, Table V, “Despina“]

DIONE_1982

50

Dione (satellite of Saturn)

{Mean radius (km)}

0

As specified accompanying the parameter value

1982

[RIIC, Table V, “Dione“]

ELARA_1988

51

Elara (satellite of Jupiter)

{Mean radius (km)}

0

As specified accompanying the parameter value

1988

[RIIC, Table V, “Elara“]

GALATEA_1991

64

Galatea (satellite of Neptune)

{Mean radius (km)}

0

As specified accompanying the parameter value

1991

[RIIC, Table V, “Despina“]

HIMALIA_1988

71

Himalia (satellite of Jupiter)

{Mean radius (km)}

0

As specified accompanying the parameter value

1982

[RIIC, Table V, “Dione“]

IAPETUS_1988

75

Iapetus (satellite of Saturn)

{Mean radius (km)}

0

As specified accompanying the parameter value

1988

[RIIC, Table V, “Elara“]

JULIET_1988

81

Juliet (satellite of Uranus)

{Mean radius (km)}

0

As specified accompanying the parameter value

1991

[RIIC, Table V, “Galatea“]

LEDA_1988

87

Leda (satellite of Jupiter)

{Mean radius (km)}

0

As specified accompanying the parameter value

1988

[RIIC, Table V, “Himalia“]

LYSITHEA_1988

88

Lysithea (satellite of Jupiter)

{Mean radius (km)}

0

As specified accompanying the parameter value

1988

[RIIC, Table V, “Lysithea“]

MOON_1991

102

Moon (satellite of Earth)

{Mean radius (km)}

0

As specified accompanying the parameter value

1991

[RIIC, Table V, “Moon“]

NAIAD_1991

104

Naiad (satellite of Neptune)

{Mean radius (km)}

0

As specified accompanying the parameter value

1991

[RIIC, Table V, “Naiad“]

NEREID_1991

106

Nereid (satellite of Neptune)

{Mean radius (km)}

0

As specified accompanying the parameter value

1991

[RIIC, Table V, “Nereid“]

OBERON_1988

108

Oberon (satellite of Uranus)

{Mean radius (km)}

0

As specified accompanying the parameter value

1988

[RIIC, Table V, “Oberon“]

OPHELIA_1988

109

Ophelia (satellite of Uranus)

{Mean radius (km)}

0

As specified accompanying the parameter value

1988

[RIIC, Table V, “Ophelia“]

PAN_1991

110

Pan (satellite of Saturn)

{Mean radius (km)}

0

As specified accompanying the parameter value

1991

[RIIC, Table V, “Pan“]

PASIPHAE_1988

112

Pasiphae (satellite of Jupiter)

{Mean radius (km)}

0

As specified accompanying the parameter value

1988

[RIIC, Table V, “Pasiphae“]

PORTIA_1988

117

Portia (satellite of Uranus)

{Mean radius (km)}

0

As specified accompanying the parameter value

1988

[RIIC, Table V, “Portia“]

PUCK_1988

120

Puck (satellite of Uranus)

{Mean radius (km)}

0

As specified accompanying the parameter value

1988

[RIIC, Table V, “Puck“]

RHEA_1988

121

Rhea (satellite of Saturn)

{Mean radius (km)}

0

As specified accompanying the parameter value

1988

[RIIC, Table V, “Rhea“]

ROSALIND_1988

122

Rosalind (satellite of Uranus)

{Mean radius (km)}

0

As specified accompanying the parameter value

1988

[RIIC, Table V, “Rosalind“]

SINOPE_1988

124

Sinope (satellite of Jupiter)

{Mean radius (km)}

0

As specified accompanying the parameter value

1988

[RIIC, Table V, “Sinope“]

THALASSA_1991

132

Thalassa (satellite of Neptune)

{Mean radius (km)}

0

As specified accompanying the parameter value

1991

[RIIC, Table V, “Thalassa“]

TITAN_1982

134

Titan (satellite of Saturn)

{Mean radius (km)}

0

As specified accompanying the parameter value

1982

[RIIC, Table V, “Titan“]

TITANIA_1988

135

Titania (satellite of Uranus)

{Mean radius (km)}

0

As specified accompanying the parameter value

1988

[RIIC, Table V, “Titania“]

TRITON_1991

136

Triton (satellite of Neptune)

{Mean radius (km)}

0

As specified accompanying the parameter value

1991

[RIIC, Table V, “Triton“]

UMBRIEL_1988

137

Umbriel (satellite of Uranus)

{Mean radius (km)}

0

As specified accompanying the parameter value

1988

[RIIC, Table V, “Umbriel“]

Object type: Sun

SUN_1992

129

Sun

{Radius}

0

As specified accompanying the parameter value

1992

[SEID, Table 15.4, “Sun“]

 

Table D.4Prolate ellipsoid RD specifications

Label

Code

Description

Parameters

Date

References

Minor semi-axis, a

Flattening, f

Error estimate

Object type: Earth

Object type: Planet (non-Earth)

Object type: Satellite

Object type: Sun

 

Table D.5 — Tri-axial ellipsoid RD specifications34

Label

Code

Description

Parameters

Date

References

Semi-axis, a

Semi-axis, b

Semi-axis, c

Error estimate

Object type: Earth

Object type: Planet (non-Earth)

GASPRA_1991

66

Gaspra (asteroid 951, a minor planet)

First element of {Radii measured along principal axes (km)}

Second element of {Radii measured along principal axes (km)}

Third element of {Radii measured along principal axes (km)}

As specified accompanying the parameter value

1991

[RIIC, Table VI, “Gaspra“]

IDA_1991

76

Ida (asteroid 293, a minor planet)

First element of {Radii measured along principal axes (km)}

Second element of {Radii measured along principal axes (km)}

Third element of {Radii measured along principal axes (km)}

As specified accompanying the parameter value

1991

[RIIC, Table VI, “Ida“]

KLEOPATRA_2000

83

Kleopatra (asteroid 216, a minor planet)

First element of {Radii measured along principal axes (km)}

Second element of {Radii measured along principal axes (km)}

Third element of {Radii measured along principal axes (km)}

As specified accompanying the parameter value

2000

[RIIC, Table VI, “Kleopatra“]

Object type: Satellite

ADRASTEA_2000

16

Adrastea (satellite of Jupiter)

{Subplanetary equatorial radius (km)}

{Along orbit equatorial radius (km)}

{Polar radius (km)}

As specified accompanying the parameter value

2000

[RIIC, Table V, “Adrastea“]

AMALTHEA_2000

18

Amalthea (satellite of Jupiter)

{Subplanetary equatorial radius (km)}

{Along orbit equatorial radius (km)}

{Polar radius (km)}

As specified accompanying the parameter value

2000

[RIIC, Table V, “Amalthea“]

ARIEL_1988

21

Ariel (satellite of Uranus)

{Subplanetary equatorial radius (km)}

{Along orbit equatorial radius (km)}

{Polar radius (km)}

As specified accompanying the parameter value

1988

[RIIC, Table V, “Ariel“]

ATLAS_1988

22

Atlas (satellite of Saturn)

{Subplanetary equatorial radius (km)}

{Along orbit equatorial radius (km)}

{Polar radius (km)}

As specified accompanying the parameter value

1988

[RIIC, Table V, “Atlas“]

CALLISTO_2000

29

Callisto (satellite of Jupiter)

{Subplanetary equatorial radius (km)}

{Along orbit equatorial radius (km)}

{Polar radius (km)}

As specified accompanying the parameter value

2000

[RIIC, Table V, “Callisto“]

CALYPSO_1988

30

Calypso (satellite of Saturn)

{Subplanetary equatorial radius (km)}

{Along orbit equatorial radius (km)}

{Polar radius (km)}

As specified accompanying the parameter value

1988

[RIIC, Table V, “Calypso“]

DEIMOS_1988

46

Deimos (satellite of Mars)

{Subplanetary equatorial radius (km)}

{Along orbit equatorial radius (km)}

{Polar radius (km)}

As specified accompanying the parameter value

1988

[RIIC, Table V, “Deimos“]

ENCELADUS_1994

52

Enceladus (satellite of Saturn)

{Subplanetary equatorial radius (km)}

{Along orbit equatorial radius (km)}

{Polar radius (km)}

As specified accompanying the parameter value

1994

[RIIC, Table V, “Enceladus“]

EPIMETHEUS_1988

53

Epimetheus (satellite of Saturn)

{Subplanetary equatorial radius (km)}

{Along orbit equatorial radius (km)}

{Polar radius (km)}

As specified accompanying the parameter value

1988

[RIIC, Table V, “Epimetheus“]

EUROPA_2000

55

Europa (satellite of Jupiter)

{Subplanetary equatorial radius (km)}

{Along orbit equatorial radius (km)}

{Polar radius (km)}

As specified accompanying the parameter value

2000

[RIIC, Table V, “Europa“]

GANYMEDE_2000

65

Ganymede (satellite of Jupiter)

{Subplanetary equatorial radius (km)}

{Along orbit equatorial radius (km)}

{Polar radius (km)}

As specified accompanying the parameter value

2000

[RIIC, Table V, “Ganymede“]

HELENE_1992

69

Helene (satellite of Saturn)

First element of {Radius (km)}

Second element of {Radius (km)}

Third element of {Radius (km)}

As specified accompanying the parameter value

1992

[SEID, Table 15.10, “Helene“]

HYPERION_2000

73

Hyperion (satellite of Saturn)

{Subplanetary equatorial radius (km)}

{Along orbit equatorial radius (km)}

{Polar radius (km)}

As specified accompanying the parameter value

2000

[RIIC, Table V, “Hyperion“]

IO_2000

79

Io (satellite of Jupiter)

{Subplanetary equatorial radius (km)}

{Along orbit equatorial radius (km)}

{Polar radius (km)}

As specified accompanying the parameter value

2000

[RIIC, Table V, “Io“]

JANUS_1988

80

Janus (satellite of Saturn)

{Subplanetary equatorial radius (km)}

{Along orbit equatorial radius (km)}

{Polar radius (km)}

As specified accompanying the parameter value

1988

[RIIC, Table V, “Janus“]

MIMAS_1994

94

Mimas (satellite of Saturn)

{Subplanetary equatorial radius (km)}

{Along orbit equatorial radius (km)}

{Polar radius (km)}

As specified accompanying the parameter value

1994

[RIIC, Table V, “Mimas“]

MIRANDA_1988

95

Miranda (satellite of Uranus)

{Subplanetary equatorial radius (km)}

{Along orbit equatorial radius (km)}

{Polar radius (km)}

As specified accompanying the parameter value

1988

[RIIC, Table V, “Miranda“]

PANDORA_1988

111

Pandora (satellite of Saturn)

{Subplanetary equatorial radius (km)}

{Along orbit equatorial radius (km)}

{Polar radius (km)}

As specified accompanying the parameter value

1988

[RIIC, Table V, “Pandora“]

PHOBOS_1988

113

Phobos (satellite of Mars)

{Subplanetary equatorial radius (km)}

{Along orbit equatorial radius (km)}

{Polar radius (km)}

As specified accompanying the parameter value

1988

[RIIC, Table V, “Phobos“]

PHOEBE_1988

114

Phoebe (satellite of Saturn)

{Subplanetary equatorial radius (km)}

{Along orbit equatorial radius (km)}

{Polar radius (km)}

As specified accompanying the parameter value

1988

[RIIC, Table V, “Phoebe“]

PROMETHEUS_1988

118

Prometheus (satellite of Saturn)

{Subplanetary equatorial radius (km)}

{Along orbit equatorial radius (km)}

{Polar radius (km)}

As specified accompanying the parameter value

1988

[RIIC, Table V, “Prometheus“]

PROTEUS_1991

119

Proteus (satellite of Neptune)

{Subplanetary equatorial radius (km)}

{Along orbit equatorial radius (km)}

{Polar radius (km)}

As specified accompanying the parameter value

1991

[RIIC, Table V, “Proteus“]

TELESTO_1988

130

Telesto (satellite of Saturn)

{Subplanetary equatorial radius (km)}

{Along orbit equatorial radius (km)}

{Polar radius (km)}

As specified accompanying the parameter value

1988

[RIIC, Table V, “Telesto“]

TETHYS_1991

131

Tethys (satellite of Saturn)

{Subplanetary equatorial radius (km)}

{Along orbit equatorial radius (km)}

{Polar radius (km)}

As specified accompanying the parameter value

1991

[RIIC, Table V, “Tethys“]

THEBE_2000

133

Thebe (satellite of Jupiter)

{Subplanetary equatorial radius (km)}

{Along orbit equatorial radius (km)}

{Polar radius (km)}

As specified accompanying the parameter value

2000

[RIIC, Table V, “Thebe“]

Object type: Sun


[ Table of contents ]


34 Because the hydrostatic shape of a body in synchronous rotation about a larger body is approximately a tri-axial ellipsoid, the a, b, and c semi-axes of RDs for satellites are respectively the equatorial subplanetary, equatorial along orbit, and polar semi-axes. For asteroids, the semi-axes are ordered by descending size. Asteroids may be extremely irregular in shape and their fit by a tri-axial ellipsoid may be poor. However, a tri-axial ellipsoid is a common reference shape for photometric analysis of such bodies.