Hati (moon)

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Hati
Provisional or systematic name S / 2004 S 14
Central body Saturn
Properties of the orbit
Major semi-axis 19,856,000 km
Periapsis 12,470,000 km
Apoapsis 27,242,000 km
eccentricity 0.372
Orbit inclination 165.8 °
Orbital time 1038.7 d
Mean orbital velocity 1.34 km / s
Physical Properties
Apparent brightness 24.4 mag
Medium diameter ≈ 6 km
Dimensions ≈ kg
Sidereal rotation ≈ 5 h 27 min
Acceleration of gravity on the surface ≈ 0 m / s 2
Escape speed ≈ 0 m / s
discovery
Explorer

David C. Jewitt , Scott S. Sheppard ,
Jan Kleyna , Brian G. Marsden

Date of discovery December 12, 2004

Hati (also Saturn XLIII) is one of the smaller outer moons of the planet Saturn .

discovery

The discovery of Hati by David C. Jewitt , Scott S. Sheppard , Jan Kleyna and Brian G. Marsden on recordings from December 12, 2004 to March 11, 2005, was announced on May 3, 2005.
Hati was initially given the provisional designation S / 2004 S 14. In April 2007, the moon was named after the giant wolf Hati , a son of the Fenris wolf and twin brother of the giant wolf Skalli (or Skoll), from Nordic mythology .

Orbit data

Hati orbits Saturn in a retrograde eccentric orbit in around 1038.7 days. The orbit eccentricity is 0.372, with the orbit inclined by 165.8 ° to the ecliptic .

Structure and physical data

Hati is about 6 km in diameter and a day-night cycle lasts about 5½ hours. This is the shortest known period of rotation for a moon in the entire solar system.

Web links

Individual evidence

  1. ↑ a b T. Denk, S. Mottola (2019): Studies of irregular satellites: I. Lightcurves and rotation periods of 25 Saturnian moons from Cassini observations. Icarus 322 , 80-102. DOI: 10.1016 / j.icarus.2018.12.040 .
further inside Saturn moons further outside
S / 2004 S 27
Semi- major axis  (km) Hati 19,856,000		 Bestla
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