Annex
D
(normative)
RDs associated with physical
objects
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.
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 |
|
Sphere RD specifications |
|
Prolate ellipsoid RD specifications |
|
Tri-axial ellipsoid RD specifications |
Table D.2 — Oblate ellipsoid RD specifications
Label |
Code |
Description |
Parameters |
Date |
References |
||
Major semi-axis, a |
Flattening, f |
Error estimate |
|||||
Object type: Earth |
|||||||
17 |
Airy |
6 377 563,396 |
1/299,324 964 6 |
Assumed precise |
1830 |
[83502T, App. A-1, “AA“] |
|
20 |
APL 4.5 |
6 378 144 |
1/298,23 |
Unknown |
1968 |
[DIGEST, Table 6.1, “AP“] |
|
23 |
Australian national |
6 378 160 |
1/298,25 |
Assumed precise |
1966 |
[83502T, App. A-1, “AN“] |
|
24 |
Average terrestrial system |
6 378 135 |
1/298,257 |
Unknown |
1977 |
[DIGEST, Table 6.1, “AT“] |
|
26 |
Bessel (Ethiopia, Indonesia, Japan, and Korea) |
6 377 397,155 |
1/299,152 812 8 |
Assumed precise |
1841 |
[83502T, App. A-1, “BR“] |
|
27 |
Bessel (Namibia) |
6 377 483,865 |
1/299,152 812 8 |
Assumed precise |
1841 |
[83502T, App. A-1, “BN“] |
|
33 |
Clarke |
6 378 235,6 |
1/294,260 676 8 |
Unknown |
1858 |
[DIGEST, Table 6.1, “CA“] |
|
34 |
Clarke - modified |
6 378 293,645 |
1/294,26 |
Unknown |
1858 |
[DIGEST, Table 6.1, “CB“] |
|
35 |
Clarke |
6 378 206,4 |
1/294,978 698 2 |
Assumed precise |
1866 |
[83502T, App. A-1, “CC“] |
|
36 |
Clarke |
6 378 249,145 |
1/293,465 |
Assumed precise |
1880 |
[83502T, App. A-1, “CD“] |
|
37 |
Clarke - Cape |
6 378 249,145 |
1/293,466 307 7 |
Unknown |
1880 |
[DIGEST, Table 6.1, “CE“] |
|
38 |
Clarke - Fiji |
6 378 301 |
1/293,465 |
Unknown |
1880 |
[DIGEST, Table 6.1, “CJ“] |
|
39 |
Clarke - IGN |
6 378 249,2 |
1/293,466 020 8 |
Unknown |
1880 |
[DIGEST, Table 6.1, “CG“] |
|
40 |
Clarke - Palestine |
6 378 300,782 |
1/293,466 307 7 |
Unknown |
1880 |
[DIGEST, Table 6.1, “CF“] |
|
41 |
Clarke - Syria |
6 378 247,842 |
1/293,466 351 7 |
Unknown |
1880 |
[DIGEST, Table 6.1, “CI“] |
|
45 |
Danish - Andrae |
6 377 104,430 |
1/300 |
Unknown |
1876 |
[DIGEST, Table 6.1, “DA“] |
|
47 |
Delambre |
6 376 985,228 |
1/308,64 |
Unknown |
1810 |
[DIGEST, Table 6.1, “DB“] |
|
57 |
Everest |
6 377 304,063 |
1/300,801 7 |
Assumed precise |
1948 |
[83502T, App. A-1, “EE“] |
|
58 |
Everest |
6 377 301,243 |
1/300,801 7 |
Assumed precise |
1956 |
[83502T, App. A-1, “EC“] |
|
60 |
Everest |
6 377 295,664 |
1/300,801 7 |
Assumed precise |
1969 |
[83502T, App. A-1, “ED“] |
|
56 |
Everest 1830 - adjusted |
6 377 276,345 |
1/300,801 7 |
Assumed precise |
1937 |
[83502T, App. A-1, “EA“] |
|
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“] |
|
59 |
Everest 1830 - revised definition |
6 377 309,613 |
1/300,801 7 |
Assumed precise |
1962 |
[83502T, App. A-1, “EF“] |
|
62 |
Fischer - Mercury |
6 378 166 |
1/298,3 |
Unknown |
1960 |
[DIGEST, Table 6.1, “FM“] |
|
63 |
Fischer |
6 378 150 |
1/298,3 |
Unknown |
1968 |
[DIGEST, Table 6.1, “FC“] |
|
67 |
Geodetic Reference System (GRS) |
6 378 160 |
1/298,247 167 4 |
Unknown |
1967 |
[DIGEST, Table 6.1, “RE“] |
|
68 |
Geodetic Reference System (GRS) |
6 378 137 |
1/298,257 222 101 |
Assumed precise |
1980 |
[83502T, App. A-1, “RF“] |
|
70 |
Helmert |
6 378 200 |
1/298,3 |
Assumed precise |
1906 |
[83502T, App. A-1, “HE“] |
|
72 |
Hough |
6 378 270 |
1/297 |
Assumed precise |
1960 |
[83502T, App. A-1, “HO“] |
|
74 |
International Association of Geodesy (IAG) best estimate |
6 378 140 |
1/298,257 |
Unknown |
1975 |
[DIGEST, Table 6.1, “IA“] |
|
77 |
Indonesian |
6 378 160 |
1/298,247 |
Assumed precise |
1974 |
[83502T, App. A-1, “ID“] |
|
78 |
International |
6 378 388 |
1/297 |
Assumed precise |
1924 |
[83502T, App. A-1, “IN“] |
|
84 |
Krassovsky |
6 378 245 |
1/298,3 |
Assumed precise |
1940 |
[83502T, App. A-1, “KA“] |
|
85 |
Krayenhoff |
6 376 950,4 |
1/309,65 |
Unknown |
1827 |
[DIGEST, Table 6.1, “KB“] |
|
97 |
Modified Airy |
6 377 340,189 |
1/299,324 964 6 |
Assumed precise |
1849 |
[83502T, App. A-1, “AM“] |
|
98 |
Modified Fischer |
6 378 155 |
1/298,3 |
Assumed precise |
1960 |
[83502T, App. A-1, “FA“] |
|
115 |
Plessis - Modified |
6 376 523 |
1/308,64 |
Unknown |
1817 |
[DIGEST, Table 6.1, “PM“] |
|
125 |
South american |
6 378 160 |
1/298,25 |
Assumed precise |
1969 |
[83502T, App. A-1, “SA“] |
|
126 |
Soviet geodetic system |
6 378 136 |
1/298,257 |
Unknown |
1985 |
[DIGEST, Table 6.1, “SG“] |
|
127 |
Soviet geodetic system |
6 378 136 |
1/298,257 839 3 |
Unknown |
1990 |
[DIGEST, Table 6.1, “SN“] |
|
128 |
Struve |
6 378 298,3 |
1/294,73 |
Unknown |
1860 |
[DIGEST, Table 6.1, “ST“] |
|
140 |
Walbeck 1819 - AMS |
6 376 896 |
1/302,78 |
Unknown |
1963 |
[DIGEST, Table 6.1, “WB“] |
|
141 |
Walbeck 1819 - Planheft |
6 376 895 |
1/302,782 156 5 |
Unknown |
1942 |
[DIGEST, Table 6.1, “WA“] |
|
142 |
War Office - McCaw |
6 378 300 |
1/296 |
Unknown |
1924 |
[DIGEST, Table 6.1, “WO“] |
|
146 |
World geodetic system |
6 378 135 |
1/298,26 |
Assumed precise |
1972 |
[83502T, App. A-1, “WD“] |
|
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) |
|||||||
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“] |
|
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“] |
|
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“] |
|
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“] |
|
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 |
|||||||
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“] |
|
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.3 — Sphere RD specifications
Label |
Code |
Description |
Parameters |
Date |
References |
||
Major semi-axis, a |
Flattening, f |
Error estimate |
|||||
Object type: Earth |
|||||||
42 |
Coupled Ocean/Atmospheric Mesoscale Prediction System (COAMPSTM) |
{Radius (meters)} |
0 |
a:{ Error estimate} |
1998 |
[ERNWM, Table 1, “COAMPS“] |
|
91 |
MASS |
{Radius (meters)} |
0 |
a:{ Error estimate} |
1999 |
[ERNWM, Table 1, “MASS“] |
|
96 |
Mesoscale (weather) Model 5 (MM5), Air Force Weather Agency (AFWA), US |
{Radius (meters)} |
0 |
a:{ Error estimate} |
1997 |
[ERNWM, Table 1, “MM5 (AFWA)“] |
|
99 |
MODTRAN (midlatitude regions) |
{Radius (meters)} |
0 |
a:{ Error estimate} |
1989 |
[ERNWM, Table 1, “MODTRAN, Midlatitude“] |
|
100 |
MODTRAN (subarctic regions) |
{Radius (meters)} |
0 |
a:{ Error estimate} |
1989 |
[ERNWM, Table 1, “MODTRAN, Subarctic“] |
|
101 |
MODTRAN (tropical regions) |
{Radius (meters)} |
0 |
a:{ Error estimate} |
1989 |
[ERNWM, Table 1, “MODTRAN, Tropical“] |
|
103 |
Multigen flat Earth |
6 366 707,02 |
0 |
Precise |
1989 |
[MFCG] |
|
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) |
|||||||
54 |
Eros (asteroid 433, a minor planet) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
2000 |
[RIIC, Table VI, “Eros“] |
|
90 |
Mars |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
2000 |
[RIIC, Table IV, “Mars“] |
|
92 |
Mercury |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1988 |
[RIIC, Table IV, “Mercury“] |
|
116 |
Pluto |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1994 |
[RIIC, Table IV, “Pluto“] |
|
139 |
Venus |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1991 |
[RIIC, Table IV, “Venus“] |
|
Object type: Satellite |
|||||||
19 |
Ananke (satellite of Jupiter) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1988 |
[RIIC, Table V, “Ananke“] |
|
25 |
Belinda (satellite of Uranus) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1988 |
[RIIC, Table V, “Belinda“] |
|
28 |
Bianca (satellite of Uranus) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1988 |
[RIIC, Table V, “Bianca“] |
|
31 |
Carme (satellite of Jupiter) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1988 |
[RIIC, Table V, “Carme“] |
|
32 |
Charon (satellite of Pluto) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1991 |
[RIIC, Table V, “Charon“] |
|
43 |
Cordelia (satellite of Uranus) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1988 |
[RIIC, Table V, “Cordelia“] |
|
44 |
Cressida (satellite of Uranus) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1988 |
[RIIC, Table V, “Cressida“] |
|
48 |
Desdemona (satellite of Uranus) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1988 |
[RIIC, Table V, “Desdemona“] |
|
49 |
Despina (satellite of Neptune) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1991 |
[RIIC, Table V, “Despina“] |
|
50 |
Dione (satellite of Saturn) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1982 |
[RIIC, Table V, “Dione“] |
|
51 |
Elara (satellite of Jupiter) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1988 |
[RIIC, Table V, “Elara“] |
|
64 |
Galatea (satellite of Neptune) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1991 |
[RIIC, Table V, “Despina“] |
|
71 |
Himalia (satellite of Jupiter) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1982 |
[RIIC, Table V, “Dione“] |
|
75 |
Iapetus (satellite of Saturn) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1988 |
[RIIC, Table V, “Elara“] |
|
81 |
Juliet (satellite of Uranus) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1991 |
[RIIC, Table V, “Galatea“] |
|
87 |
Leda (satellite of Jupiter) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1988 |
[RIIC, Table V, “Himalia“] |
|
88 |
Lysithea (satellite of Jupiter) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1988 |
[RIIC, Table V, “Lysithea“] |
|
102 |
Moon (satellite of Earth) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1991 |
[RIIC, Table V, “Moon“] |
|
104 |
Naiad (satellite of Neptune) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1991 |
[RIIC, Table V, “Naiad“] |
|
106 |
Nereid (satellite of Neptune) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1991 |
[RIIC, Table V, “Nereid“] |
|
108 |
Oberon (satellite of Uranus) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1988 |
[RIIC, Table V, “Oberon“] |
|
109 |
Ophelia (satellite of Uranus) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1988 |
[RIIC, Table V, “Ophelia“] |
|
110 |
Pan (satellite of Saturn) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1991 |
[RIIC, Table V, “Pan“] |
|
112 |
Pasiphae (satellite of Jupiter) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1988 |
[RIIC, Table V, “Pasiphae“] |
|
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“] |
121 |
Rhea (satellite of Saturn) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1988 |
[RIIC, Table V, “Rhea“] |
|
122 |
Rosalind (satellite of Uranus) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1988 |
[RIIC, Table V, “Rosalind“] |
|
124 |
Sinope (satellite of Jupiter) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1988 |
[RIIC, Table V, “Sinope“] |
|
132 |
Thalassa (satellite of Neptune) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1991 |
[RIIC, Table V, “Thalassa“] |
|
134 |
Titan (satellite of Saturn) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1982 |
[RIIC, Table V, “Titan“] |
|
135 |
Titania (satellite of Uranus) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1988 |
[RIIC, Table V, “Titania“] |
|
136 |
Triton (satellite of Neptune) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1991 |
[RIIC, Table V, “Triton“] |
|
137 |
Umbriel (satellite of Uranus) |
{Mean radius (km)} |
0 |
As specified accompanying the parameter value |
1988 |
[RIIC, Table V, “Umbriel“] |
|
Object type: Sun |
|||||||
129 |
Sun |
{Radius} |
0 |
As specified accompanying the parameter value |
1992 |
[SEID, Table 15.4, “Sun“] |
Table D.4 — Prolate 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) |
||||||||
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“] |
|
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“] |
|
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 |
||||||||
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“] |
|
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“] |
|
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“] |
|
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“] |
|
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“] |
|
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“] |
|
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“] |
|
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“] |
|
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“] |
|
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“] |
|
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“] |
|
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“] |
|
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“] |
|
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“] |
|
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“] |
|
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“] |
|
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“] |
|
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“] |
|
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“] |
|
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“] |
|
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“] |
|
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“] |
|
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“] |
|
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“] |
|
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 |
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.