jcdsc@ihuxs.UUCP (Dick Scherpenzeel) (06/27/84)
I have seen a lot of pictures made by spacecrafts passing the other planets. Also descriptions about the environent on the planets and satelites are given in magazines like Scientific American, Astronomy, etc. All those nearby flights to the planets and satelites must have resulted in much better values for the masses and sizes of the planets and satelites as were known before, but I don't known where I can get this kind of information. Dick Scherpenzeel AT&T Bell Laboratories Naperville, Il ...ihnp4!ihuxs!jcdsc
gsw@pegasus.UUCP (06/29/84)
The currently accepted data for the satellites in the solar system as presented in July 1983 at the International Astronomical Union Colloquium No. 77 (Natural Satelites) was presented in Sky and Telescope, November 1983. I have reproduced part of it below. The information given in S&T does not include the masses of the satellites but does include their orbital radius, orbital period, eccentricity, inclination, apparent magnitude and radius. Other information may be available from the I.A.U. Data for the planets is easy to find. Parenthetic values are uncertain by at least 10 percent. Parenthetic names await approval by the IAU. Compound radii are the values for the "best-fit" triaxial ellipsoid (for those of a strange shape.) EARTH Moon 1,738 MARS MI Phobos 14 11 9 MII Deimos (8) 6 (5) JUPITER (J16) (Metis) (20) (J15) (Adrastea) 12 10 8 JV Amalthea 135 85 75 JXIV Thebe 55 ? 45 JI Io 1,815 JII Europa 1,569 JIII Ganymede 2,631 JIV Callisto 2,400 JXIII Leda (5) JVI Himalia (90) JX Lysithea (10) JVII Elara (40) JXII Ananke (10) JXI Carme (15) JVIII Pasiphae (20) JIX Sinope (15) SATURN (SXV) (Atlas) (19) ? (13) 1980 S 27 70 (50) (37) 1980 S 26 (55) (42) (33) SX Janus 110 95 80 SXI Epimetheus (70) (57) (50) SI Mimas 196 SII Enceladus 250 SIII Tethys 530 SXIII Telesto ? (12) (11) SXIV Calipso (15) (12) (8) SIV Dione 560 1980 S 6 (18) ? (<15) SV Rhea 765 SVI Titan 2,575 SVII Hyperion 175 117 (100) SVIII Iapetus 730 SIX Phoebe 110 URANUS UV Miranda (200) UI Ariel 665 UII Umbriel 555 UIII Titania 800 UIV Oberon 815 NEPTUNE NI Triton (1,750) NII Nereid (200) PLUTO PI Charon (500) Gordon "returning to longtitude zero" Watson
gsw@pegasus.UUCP (06/29/84)
The currently accepted data for the satellites in the solar system as presented in July 1983 at the International Astronomical Union Colloquium No. 77 (Natural Satellites) was presented in Sky and Telescope, November 1983. I have reproduced part of it below. The information given in S&T does not include the masses of the satellites but does include their orbital radius, orbital period, eccentricity, inclination, apparent magnitude and radius. Other information may be available from the I.A.U. Data for the planets is easy to find. Here are the radii for the known satelites. Parenthetic values are uncertain by at least 10 percent. Parenthetic names await approval by the IAU. Compound radii are the values for the "best-fit" triaxial ellipsoid (for those of a strange shape.) EARTH Moon 1,738 MARS MI Phobos 14 11 9 MII Deimos (8) 6 (5) JUPITER (J16) (Metis) (20) (J15) (Adrastea) 12 10 8 JV Amalthea 135 85 75 JXIV Thebe 55 ? 45 JI Io 1,815 JII Europa 1,569 JIII Ganymede 2,631 JIV Callisto 2,400 JXIII Leda (5) JVI Himalia (90) JX Lysithea (10) JVII Elara (40) JXII Ananke (10) JXI Carme (15) JVIII Pasiphae (20) JIX Sinope (15) SATURN (SXV) (Atlas) (19) ? (13) 1980 S 27 70 (50) (37) 1980 S 26 (55) (42) (33) SX Janus 110 95 80 SXI Epimetheus (70) (57) (50) SI Mimas 196 SII Enceladus 250 SIII Tethys 530 SXIII Telesto ? (12) (11) SXIV Calipso (15) (12) (8) SIV Dione 560 1980 S 6 (18) ? (<15) SV Rhea 765 SVI Titan 2,575 SVII Hyperion 175 117 (100) SVIII Iapetus 730 SIX Phoebe 110 URANUS UV Miranda (200) UI Ariel 665 UII Umbriel 555 UIII Titania 800 UIV Oberon 815 NEPTUNE NI Triton (1,750) NII Nereid (200) PLUTO PI Charon (500) Gordon "returning to longtitude zero" Watson
gsw@pegasus.UUCP (Gordon S. Watson) (06/29/84)
The currently accepted data for the satellites in the solar system as presented in July 1983 at the International Astronomical Union Colloquium No. 77 (Natural Satellites) was presented in Sky and Telescope, November 1983. I have reproduced part of it below. The information given in S&T does not include the masses of the satellites but does include their orbital radius, orbital period, eccentricity, inclination, apparent magnitude and radius. Other information may be available from the I.A.U. Data for the planets is easy to find. Here are the radii for the known satelites. Parenthetic values are uncertain by at least 10 percent. Parenthetic names await approval by the IAU. Compound radii are the values for the "best-fit" triaxial ellipsoid (for those of a strange shape.) Radius (km.) EARTH Moon 1,738 MARS MI Phobos 14 11 9 MII Deimos (8) 6 (5) JUPITER (J16) (Metis) (20) (J15) (Adrastea) 12 10 8 JV Amalthea 135 85 75 JXIV Thebe 55 ? 45 JI Io 1,815 JII Europa 1,569 JIII Ganymede 2,631 JIV Callisto 2,400 JXIII Leda (5) JVI Himalia (90) JX Lysithea (10) JVII Elara (40) JXII Ananke (10) JXI Carme (15) JVIII Pasiphae (20) JIX Sinope (15) SATURN (SXV) (Atlas) (19) ? (13) 1980 S 27 70 (50) (37) 1980 S 26 (55) (42) (33) SX Janus 110 95 80 SXI Epimetheus (70) (57) (50) SI Mimas 196 SII Enceladus 250 SIII Tethys 530 SXIII Telesto ? (12) (11) SXIV Calipso (15) (12) (8) SIV Dione 560 1980 S 6 (18) ? (<15) SV Rhea 765 SVI Titan 2,575 SVII Hyperion 175 117 (100) SVIII Iapetus 730 SIX Phoebe 110 URANUS UV Miranda (200) UI Ariel 665 UII Umbriel 555 UIII Titania 800 UIV Oberon 815 NEPTUNE NI Triton (1,750) NII Nereid (200) PLUTO PI Charon (500) Gordon "returning to longtitude zero" Watson