Their semi-major axes (distances from Jupiter) range between 22.8 and 24.1 million km (the same range as the Carme group), their inclinations between 144.5° and 158.3°, and their eccentricities between 0.25 and 0.43.
This diagram illustrates the largest irregular satellites of Jupiter. Among the Pasiphae group, Sinope and Pasiphae itself are labelled. An object's position on the horizontal axis indicates its distance from Jupiter. The vertical axis indicates its inclination. Eccentricity is indicated by yellow bars illustrating the object's maximum and minimum distances from Jupiter. Circles illustrate an object's size in comparison to the others.
Core members of the group include (negative periods indicate retrograde orbits):[1]
The Pasiphae group is believed to have been formed when Jupiter captured an asteroid which subsequently broke up after a collision. The original asteroid was not disturbed heavily: the original body is calculated to have been 60 km in diameter, about the same size as Pasiphae; Pasiphae retains 99% of the original body's mass. However, if Sinope belongs to the group, the ratio is much smaller, 87%.[2]
Unlike the Carme and Ananke groups, the theory of a single impact origin for the Pasiphae group is not accepted by all studies. This is because the Pasiphae group, while similar in semi-major axis, is more widely dispersed in inclination.[note 1] Alternatively, Sinope might be not a part of the remnants of the same collision and captured independently instead.[4] The differences of colour between the objects (grey for Pasiphae, light red for Callirrhoe and Megaclite) also suggest that the group could have a more complex origin than a single collision.[4]
This diagram compares the orbital elements and relative sizes of the core members of the Pasiphae group. The horizontal axis illustrates their average distance from Jupiter, the vertical axis their orbital inclination, and the circles their relative sizes.This diagram compares the wide dispersion of the Pasiphae group (red) with the more compact Ananke (blue) and Carme (green) groups.
Notesedit
^Nesvorný 2003, concurring on the Ananke and Carme groups, lists only Megaclite for Pasiphae. However, secular resonances, known for both Pasiphae and Sinope, could shape the orbits and provide the explanation for the post-collision dispersal of the orbital elements.[3]
Referencesedit
^Scott S. Sheppard, David C. Jewitt, Carolyn PorcoJupiter's outer satellites and Trojans, In: Jupiter. The planet, satellites and magnetosphere. Edited by Fran Bagenal, Timothy E. Dowling, William B. McKinnon. Cambridge planetary science, Vol. 1, Cambridge, UK: Cambridge University Press, ISBN0-521-81808-7, 2004, p. 263 - 280 Full text(pdf). 2007-06-14 at the Wayback Machine
^Sheppard, Scott S.; Jewitt, David C. (May 5, 2003). "An abundant population of small irregular satellites around Jupiter". Nature. 423 (6937): 261–263. Bibcode:2003Natur.423..261S. doi:10.1038/nature01584. PMID 12748634. S2CID 4424447. However, Nesvorny 2003, while concurring on the Ananke and Carme groups, lists only Megaclite for Pasiphae's group
^ David Nesvorný, Cristian Beaugé, and Luke Dones Collisional Origin of Families of Irregular Satellites, The Astronomical Journal, 127 (2004), pp. 1768–1783 Full text.
^ abGrav, Tommy; Holman, Matthew J.; Gladman, Brett J.; Aksnes, KaarePhotometric survey of the irregular satellites, Icarus, 166,(2003), pp. 33-45. Preprint
December 18, 2023
pasiphae, group, group, retrograde, irregular, satellites, jupiter, that, follow, similar, orbits, pasiphae, thought, have, common, origin, their, semi, major, axes, distances, from, jupiter, range, between, million, same, range, carme, group, their, inclinati. The Pasiphae group is a group of retrograde irregular satellites of Jupiter that follow similar orbits to Pasiphae and are thought to have a common origin Their semi major axes distances from Jupiter range between 22 8 and 24 1 million km the same range as the Carme group their inclinations between 144 5 and 158 3 and their eccentricities between 0 25 and 0 43 This diagram illustrates the largest irregular satellites of Jupiter Among the Pasiphae group Sinope and Pasiphae itself are labelled An object s position on the horizontal axis indicates its distance from Jupiter The vertical axis indicates its inclination Eccentricity is indicated by yellow bars illustrating the object s maximum and minimum distances from Jupiter Circles illustrate an object s size in comparison to the others Core members of the group include negative periods indicate retrograde orbits 1 Name Diameter km Period days NotesPasiphae 57 8 722 34 largest member and group prototypeSinope 35 777 29 red colourCallirrhoe 9 6 787 43 reddish colourMegaclite 5 747 09 reddish colourAutonoe 4 719 01Aoede 4 714 657Eurydome 3 722 59Hegemone 3 745 50Sponde 2 734 89S 2003 J23 2 792Cyllene 1 731 099The International Astronomical Union IAU reserves names ending in e for all retrograde moons Origin editThe Pasiphae group is believed to have been formed when Jupiter captured an asteroid which subsequently broke up after a collision The original asteroid was not disturbed heavily the original body is calculated to have been 60 km in diameter about the same size as Pasiphae Pasiphae retains 99 of the original body s mass However if Sinope belongs to the group the ratio is much smaller 87 2 Unlike the Carme and Ananke groups the theory of a single impact origin for the Pasiphae group is not accepted by all studies This is because the Pasiphae group while similar in semi major axis is more widely dispersed in inclination note 1 Alternatively Sinope might be not a part of the remnants of the same collision and captured independently instead 4 The differences of colour between the objects grey for Pasiphae light red for Callirrhoe and Megaclite also suggest that the group could have a more complex origin than a single collision 4 nbsp This diagram compares the orbital elements and relative sizes of the core members of the Pasiphae group The horizontal axis illustrates their average distance from Jupiter the vertical axis their orbital inclination and the circles their relative sizes nbsp This diagram compares the wide dispersion of the Pasiphae group red with the more compact Ananke blue and Carme green groups Notes edit Nesvorny 2003 concurring on the Ananke and Carme groups lists only Megaclite for Pasiphae However secular resonances known for both Pasiphae and Sinope could shape the orbits and provide the explanation for the post collision dispersal of the orbital elements 3 References edit Scott S Sheppard David C Jewitt Carolyn Porco Jupiter s outer satellites and Trojans In Jupiter The planet satellites and magnetosphere Edited by Fran Bagenal Timothy E Dowling William B McKinnon Cambridge planetary science Vol 1 Cambridge UK Cambridge University Press ISBN 0 521 81808 7 2004 p 263 280 Full text pdf Archived 2007 06 14 at the Wayback Machine Sheppard Scott S Jewitt David C May 5 2003 An abundant population of small irregular satellites around Jupiter Nature 423 6937 261 263 Bibcode 2003Natur 423 261S doi 10 1038 nature01584 PMID 12748634 S2CID 4424447 However Nesvorny 2003 while concurring on the Ananke and Carme groups lists only Megaclite for Pasiphae s group David Nesvorny Cristian Beauge and Luke Dones Collisional Origin of Families of Irregular Satellites The Astronomical Journal 127 2004 pp 1768 1783 Full text a b Grav Tommy Holman Matthew J Gladman Brett J Aksnes Kaare Photometric survey of the irregular satellites Icarus 166 2003 pp 33 45 Preprint Retrieved from https en wikipedia org w index php title Pasiphae group amp oldid 1186321412, wikipedia, wiki, book, books, library,
