Appendix 1b: Solar System Data 2

Physical Data

           Radius    Mass                    Rotate  Dimensions
Name        (km)     (kg)   Dens  Abo    Vo  (days)     (km)
--------- -------  -------  ----  --- -----  ------  ----------
Sun        695000  1.99e30  1.41    ? -26.    24.6

Mercury      2440  3.30e23  5.43  .11  -1.9   58.6
Venus        6052  4.87e24  5.24  .65  -4.4 -243 
Earth        6378  5.97e24  5.52  .37   -      0.99
Mars         3397  6.42e23  3.93  .15  -2.0    1.03
Jupiter     71492  1.90e27  1.33  .52  -2.7    0.41
Saturn      60268  5.68e26  0.69  .47   0.7    0.45
Uranus      25559  8.68e25  1.32  .51   5.5   -0.72
Neptune     24766  1.02e26  1.64  .41   7.8    0.67
Pluto        1137  1.27e22  2.06  .55  13.6   -6.39  (z)

Moon         1738  7.35e22  3.34  .12 -12.7     S

Phobos         11  1.08e16  1.9   .06  11.3     S    13.5 x 10.8 x 9.4
Deimos          6  1.80e15  1.8   .07  12.3     S    7.5 x 6.1 x 5.5

Metis          20  9.56e16  2.8   .05  17.5     ?
Adrastea       10  1.91e16  4.5   .05  18.7     ?    12.5 x 10 x 7.5
Amalthea       94  7.17e18  1.8   .05  14.1     S    135 x 83 x 75
Thebe          50  7.77e17  1.5   .05  16.0     S    55 x 45
Io           1821  8.93e22  3.53  .61   5.0     S 
Europa       1565  4.80e22  2.99  .64   5.3     S
Ganymede     2634  1.48e23  1.94  .42   4.6     S
Callisto     2403  1.08e23  1.85  .20   5.6     S
Leda            8  5.68e15  2.7     ?  20.2     ?
Himalia        93  9.56e18  2.8     ?  15.0    0.4
Lysithea       18  7.77e16  3.1     ?  18.2     ?
Elara          38  7.77e17  3.3     ?  16.6    0.5
Ananke         15  3.82e16  2.7     ?  18.9     ?
Carme          20  9.56e16  2.8     ?  17.9     ?
Pasiphae       25  1.91e17  2.9     ?  16.9     ?
Sinope         18  7.77e16  3.1     ?  18.0     ?

Pan            10     ?       ?   .5    ?       ? 
Atlas          15     ?       ?   .9   18.0     ?    20 x 10
Prometheus     46  2.70e17  0.7   .6   15.8     ?    72 x 43 x 32
Pandora        42  2.20e17  0.7   .9   16.5     ?    57 x 42 x 31
Epimetheus     57  5.59e17  0.6   .8   15.7     S    69 x 55 x 55
Janus          89  1.98e18  0.65  .8   14.5     S    99 x 96 x 76
Mimas         199  3.75e19  1.14  .5   12.9     S
Enceladus     249  7.30e19  1.12  .99  11.7     S
Tethys        530  6.22e20  1.00  .9   10.2     S
Telesto        15     ?       ?   .5   18.7     ?    17 x 14 x 13
Calypso        13     ?       ?   .6   19.0     ?    17 x 11 x 11
Dione         560  1.05e21  1.44  .7   10.4     S
Helene         16     ?       ?   .7   18.4     ?    18 x 16 x 15
Rhea          764  2.31e21  1.24  .7    9.7     S
Titan        2575  1.35e23  1.88  .21   8.3     S
Hyperion      143  1.77e19  1.4   .3   14.2  chaotic 185 x 140 x 113
Iapetus       718  1.59e21  1.02  .2   11.1     S    (y)
Phoebe        110  4.00e18  0.7   .06  16.5    0.4          115 x 110 x 105

Cordelia       13     ?       ?   .07  24.0     ?
Ophelia        16     ?       ?   .07  24.0     ?
Bianca         22     ?       ?   .07  23.0     ?
Cressida       33     ?       ?   .07  22.0     ?
Desdemona      29     ?       ?   .07  22.0     ?
Juliet         42     ?       ?   .07  22.0     ?
Portia         55     ?       ?   .07  21.0     ?
Rosalind       27     ?       ?   .07  22.0     ?
Belinda        34     ?       ?   .07  22.0     ?
Puck           77     ?       ?   .07  20.0     ?
Miranda       236  6.59e19  1.20  .27  16.5     S    240 x 234 x 233
Ariel         581  1.35e21  1.67  .34  14.4     S    581 x 578 x 578
Umbriel       585  1.17e21  1.40  .18  15.3     S
Titania       789  3.53e21  1.71  .27  14.0     S
Oberon        761  3.01e21  1.63  .24  14.2     S
S/1997 U 1     40                      22
S/1997 U 2     80                      20

Naiad          29     ?       ?   .06  25.0     ?
Thalassa       40     ?       ?   .06  24.0     ?
Despina        74     ?       ?   .06  23.0     ?
Galatea        79     ?       ?   .06  23.0     ?
Larissa        96     ?       ?   .06  21.0     ?    104 x 89
Proteus       209     ?       ?   .06  20.0     ?    218 x 208 x 201
Triton       1353  2.15e22  2.05  .7   13.6     S
Nereid        170     ?       ?   .2   18.7     ?

Charon        586  1.90e21  2.24  .32  15.5     S    (z)

Key:
Radius      Equatorial radius in km.
Mass        in kilograms including atmospheres but not satellites.
Dens        Density in g/cm3.
Abo         Object's geometric albedo.
Vo          Object's magnitude in visible light at opposition.
Rotate      Sidereal period of equatorial rotation in days (negative=retrograde; S=synchronous).
Dimensions  Radii for non-spherical bodies.

Notes:
(y) Iapetus' magnitude varies from 10.2 to 11.9
(z) the masses, radii and densities of Pluto and Charon are still somewhat uncertain
( ) Some of the data above is given to more decimal places than it should be.

Much more accurate and detailed data is available from JPL's Horizons telnet interface