S / 2004 S 26

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S / 2004 S 26
Central body Saturn
Properties of the orbit
Major semi-axis 26,676,218 km
Periapsis 22,287,318 km
Apoapsis 31,065,117 km
eccentricity 0.1645
Orbit inclination 171.37 °
Orbital time 1626.67 d
Mean orbital velocity 1.183 km / s
Physical Properties
Apparent brightness 25.0 mag
Medium diameter 4 km
Acceleration of gravity on the surface ≈ 0 m / s 2
Escape speed ≈ 0 m / s
discovery
Explorer

Scott S. Sheppard
David C. Jewitt
Jan T. Kleyna

Date of discovery December 12, 2004

S / 2004 S 26 is one of the smaller outer moons of the planet Saturn . It is currently the outermost known moon of Saturn; Fornjot had previously held this quality .

Discovery and naming

S / 2004 S 26 was discovered on December 12, 2004 by astronomers Scott Sheppard and David Jewitt ( University of California ) as well as Jan Kleyna ( University of Hawaii ) on images taken from December 12, 2004 to March 22, 2007 with the 8.2 m Subaru telescope at the Mauna Kea Observatory . From this period 19 more moons of Saturn could be detected; the discovery was announced on October 7, 2019, the moon was given the provisional designation S / 2004 S 26 .

The Carnegie Institution for Science called with the announcement of the discovery on the public to to 6 December 2019 to send in suggestions for names for a total of 20 newly discovered moons. According to the group affiliation of the moons, names of giants from the Gallic , Nordic or Inuit mythology should be used.

The observation period of S / 2004 S 26 extends from December 12, 2004 to March 21, 2007; there are a total of 21 observations over a period of three years.

Track properties

S / 2004 S 26 orbits Saturn in four years and 166.7 days on a slightly elliptical, retrograde orbit between 22,287,318 km and 31,065,117 km from its center. The orbital eccentricity is 0.165, the web is 171.4 ° relative to the equator of Saturn inclined .

The moon is part of the so-called Nordic group of Saturn moons, which orbit the planet with orbital inclinations between 145.2 ° and 177.5 ° and orbital eccentricities between 0.130 and 0.580 retrograde.

Physical Properties

S / 2004 S 26 has a diameter of about 4 km. The absolute brightness of the moon is 15.8  m .

See also

Web links

Individual evidence

  1. ↑ v ≈ π * a / period (1 + sqrt (1-e²))
  2. ^ Scott S. Sheppard : Saturn Moons . Carnegie Institution for Science . Retrieved October 10, 2019.
  3. ↑ MPC : MPEC 2019-T133: S / 2004 S 26 . IAU . October 7, 2019. Retrieved October 10, 2019.
further inside Saturn moons further outside
Fornjot
Semi- major axis  (km) S / 2004 S 26 26,676,218
Well-known moons of planets and dwarf planets


earth

moon

Mars

Deimos  • Phobos

Jupiter
( list )

Adrastea  • Aitne  • Amalthea  • Ananke  • Aoede  • Arche  • Autonoe  • Callirrhoe  • Carme  • Carpo  • Chaldene  • Cyllene  • Dia  • Eirene  • Elara  • Erinome  • Ersa  • Euanthe  • Eucelade  • Eupheme  • Euporia  • Europe  • Eurydome  • Ganymed  • Harpalyke  • Hegemone  • Helike  • Hermippe  • Herse  • Himalia  • Io  • Iocaste  • Isonoe  • Kale  • Kallichore  • Callisto  • Kalyke  • Kore  • Leda  • Lysithea  • Megaclite  • Metis  • Mneme  • Orthosie  • Pandia  • Pasiphae  • Pasithee  • Philophrosyne  • Praxidike  • Sinope  • Sponde  • Taygete  • Thebe  • Thelxinoe  • Themisto  • Thyone  • Valetudo
S / 2003 Y 10  • S / 2003 Y 12  • S / 2003 Y 16  • S / 2003 Y 18  • S / 2003 Y 19  • S / 2003 Y 2  • S / 2003 Y 23  • S / 2003 Y 4  • S / 2003 Y 9  • S / 2010 Y 1  • S / 2010 Y 2  • S / 2011 Y 1  • S / 2011 Y 2  • S / 2016 Y 1  • S / 2017 Y 1  • S / 2017 Y 2  • S / 2017 Y 3  • S / 2017 Y 5  • S / 2017 Y 6  • S / 2017 Y 7  • S / 2017 Y 8  • S / 2017 Y 9

Saturn
( list )

Aegaeon  • Aegir  • Albiorix  • Anthe  • Atlas  • bebhionn  • Bergelmir  • Bestla  • Calypso  • Daphnis  • Dione  • Enceladus  • Epimetheus  • erriapus  • Farbauti  • Fenrir  • Fornjot  • Greip  • Hati  • Helene  • Hyperion  • hyrrokkin  • Iapetus  • Ijiraq  • Janus  • Jarnsaxa  • Kari  • Kiviuq  • Loge  • Methone  • Mimas  • Mundilfari  • Narvi  • Paaliaq  • Pallene  • Pan  • Pandora  • Phoebe  • Polydeuces  • Prometheus  • Rhea  • Siarnaq  • Skathi  • Skoll  • Surtur  • Suttungr  • Tarqeq  • Tarvos  • Telesto  • Tethys  • Thrymr  • Titan  • Ymir
S / 2004 S 7  • S / 2004 S 12  • S / 2004 S 13  • S / 2004 S 17  • S / 2004 S 20  • S / 2004 S 21  • S / 2004 S 22  • S / 2004 S 23  • S / 2004 S 24  • S / 2004 S 25  • S / 2004 S 26  • S / 2004 S 27  • S / 2004 S 28  • S / 2004 S 29  • S / 2004 S 30  • S / 2004 S 31  • S / 2004 S 32  • S / 2004 S 33  • S / 2004 S 34  • S / 2004 S 35  • S / 2004 S 36  • S / 2004 S 37  • S / 2004 S 38  • S / 2004 S 39  • S / 2006 S 1  • S / 2006 S 3  • S / 2007 S 2  • S / 2007 S 3  • S / 2009 S 1

Uranus
( list )

Ariel  • Belinda  • Bianca  • Caliban  • Cordelia  • Cressida  • Cupid  • Desdemona  • Ferdinand  • Francisco  • Juliet  • Mab  • Margaret  • Miranda  • Oberon  • Ophelia  • Perdita  • Portia  • Prospero  • Puck  • Rosalind  • Setebos  • Stephano  • Sycorax  • Titania  • Trinculo  • Umbriel

Neptune
( list )

Despina  • Galatea  • Halimede  • Hippocamp  • Laomedeia  • Larissa  • Naiad  • Nereid  • Neso  • Proteus  • Psamathe  • Sao  • Thalassa  • Triton

Pluto

Charon  • Hydra  • Kerberos  • Nix  • Styx

Haumea

Hi'iaka  • Namaka

Makemake

S / 2015 (136472) 1

Eris

Dysnomia