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     ?
1986U10        20
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
Caliban        40                 .07  21.9
Stephano       15                 .07  24.3
Sycorax        80                 .07  20.4
Prospero       20                 .07  23.2
Setebos        20                 .07  23.3

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 (highly uncertain for the small outer solar system moons)
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 massesĦA 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 and their web site