Astronomy   View all facts   Glossary   Help
physical object > natural object > celestial body > planet > gas giant > Neptune
Next gas giant: Saturn    Up: gas giant, superior planet    Previous gas giant: Jupiter   

Neptune
subjectfact 
Neptunehas obliquity 28°.8has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:32:12.0
has atmosphere composition hydrogen and methanehas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:32:12.0
has albedo 0.62has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:32:12.0
has synodic period 367.49 dayshas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:32:12.0
has oblateness 0.02has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:32:12.0
has rotation period 15h49m30shas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:32:12.0
has orbital velocity Vorb = 5.43 km s-1has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:32:12.0
has mean distance from Sun 30.07 AUhas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:32:12.0
has inclination 1°.8has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:32:12.0
has eccentricity e = 0.009has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:32:12.0
has satellites Triton and Nereidhas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:32:12.0
has maximum apparent brightness 7.6 maghas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:32:12.0
has radius 24500 ± 500 kmhas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:32:12.0
is a part of our solar system2001-09-27 09:32:12.0
has surface gravity 1.3 that of Earthhas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:32:12.0
has escape velocity Vesc = 25 km s-1has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:32:12.0
has mean density 1.7 g cm-2has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:32:12.0
has discovery date 1846has source: Abbot, D. 1984 Astronomers, Peter Bedrick Books, New York, 2001-09-27 09:32:12.0
has discoverer Johann Galle and Louis d'Arresthas source: Abbot, D. 1984 Astronomers, Peter Bedrick Books, New York, 2001-09-27 09:32:12.0
has orbital period 164.8 yearshas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:32:12.0
has mass 1.03 × 1029 ghas source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:32:12.0
has definition Eighth major planet out from the Sun. Discovered in by following predictions calculated by Urbain Le Verrier. Similar predictions had been made earlier by John Couch Adams but were not followed up.has source: Abbot, D. 1984 Astronomers, Peter Bedrick Books, New York, 2001-09-27 09:32:12.0
is an instance of gas giant2001-09-27 09:32:11.0
is an instance of superior planethas source: Abbot, D. 1984 Astronomers, Peter Bedrick Books, New York, 2001-09-27 09:32:11.0
gas gianthas composition Mostly made of various light elements such as gases and simple compounds2001-09-27 09:31:54.0
has synonym Jovian planet2001-09-27 09:31:54.0
planetis a part of solar system2001-09-27 09:31:54.0
has orbit2001-09-27 09:31:54.0
celestial bodyhas spectra2001-09-27 09:30:09.0
physical objecthas location or center of gravity2001-09-27 09:27:27.0
has angular momentum2001-09-27 09:27:27.0
has velocity2001-09-27 09:27:27.0
has momentum2001-09-27 09:27:27.0
has temperature2001-09-27 09:27:27.0
has volume2001-09-27 09:27:27.0
has extent2001-09-27 09:27:27.0
has material2001-09-27 09:27:27.0

Next gas giant: Saturn    Up: gas giant, superior planet    Previous gas giant: Jupiter