|Discovered by||S. B. Nicholson|
|Discovery time||July 21, 1914|
|Shortest distance from what it orbits around||18,237,600 km|
|Longest distance from what it orbits around||30,191,200 km|
|Avg. distance from the center of its orbital path||23,540,000 km|
|How egg-shaped its orbit is
|How long it takes to complete an orbit||724.1 d (1.95 a)|
|Average speed||2.252 km/s|
|Angle above the reference plane
|128.11° (to the ecliptic)
153.12° (to Jupiter's equator)
|What it orbits||Jupiter|
|Size and Other Qualities|
|Average distance from its center to its surface||~19 km|
|Volume inside it||~28,700 km³|
|Average density||2.6 g/cm³ (assumed)|
|Gravity at its surface||0.014 m/s2 (0.001 g)|
|Slowest speed able to escape into space
|How much light it reflects||0.04 (assumed)|
|Avg. surface temp.||~124 K|
Orbit[change | change source]
Sinope orbits Jupiter on a high eccentricity and high inclination retrograde orbit. The orbital elements are as of January 2000. They are changing a lot due to Solar and planetary perturbations. It is often believed to belong to the Pasiphaë group. However, given its mean inclination and different colour, Sinope could be also an independent object, captured independently, unrelated to the collision and break-up at the origin of the group. The diagram illustrates Sinope's orbital elements in relation to other moons of the group.
Physical characteristics[change | change source]
References[change | change source]
- Jacobson, R. A. (2000). "The Orbits of the Outer Jovian Satellites". Astronomical Journal 120: pp. 2679-2686. doi:10.1086/316817. http://www.journals.uchicago.edu/AJ/journal/issues/v120n5/200233/200233.web.pdf.
- Nicholson, S. B. (1914). "Discovery of the Ninth Satellite of Jupiter". Publications of the Astronomical Society of the Pacific 26: pp. 197-198. http://adsabs.harvard.edu//full/seri/PASP./0026//0000197.000.html.
- Nicholson, S. B. (April 1939). "The Satellites of Jupiter". Publications of the Astronomical Society of the Pacific 51 (300): pp. 85–94. http://adsabs.harvard.edu//full/seri/PASP./0051//0000093.000.html. (in which he declines to name the recently discovered satellites (pp. 93–94))
- IAUC 2846: Satellites of Jupiter 1974 October 7 (naming the moon)
- Payne-Gaposchkin, Cecilia; Katherine Haramundanis (1970). Introduction to Astronomy. Englewood Cliffs, N.J.: Prentice-Hall. ISBN 0-134-78107-4.
- Sheppard, S. S.; and Jewitt, D. C.; An Abundant Population of Small Irregular Satellites Around Jupiter, Nature, Vol. 423 (May 2003), pp. 261-263
- Grav, T.; Holman, M. J.; Gladman, B. J.; and Aksnes, K.; Photometric Survey of the Irregular Satellites, Icarus, Vol. 166 (2003), pp. 33-45
- Grav, T.; and Holman, M. J. (2004). "Near-Infrared Photometry of the Irregular Satellites of Jupiter and Saturn". The Astrophysical Journal 605: pp. L141–L144. http://arxiv.org/abs/astro-ph/0312571.
Other websites[change | change source]