Erriapus (moon)

Erriapus
Provisional or systematic name	S / 2000 S 10
Central body	Saturn
Properties of the orbit
Major semi-axis	17,342,000 km
Periapsis	9,122,000 km
Apoapsis	25,562,000 km
eccentricity	0.4740
Orbit inclination	34,450,474 °
Orbital time	871.2 d
Mean orbital velocity	1.45 km / s
Physical Properties
Albedo	0.06
Apparent brightness	23.0 likes
Medium diameter	≈ 10 km
Dimensions	≈ 7.6 × 10 ¹⁴ kg
Medium density	2.3 g / cm ³
Sidereal rotation	≈ 28 h 09 min
Acceleration of gravity on the surface	≈ 0.002 m / s ²
Escape speed	≈ 4.5 m / s
discovery
Explorer	Brett Gladman et al.
Date of discovery	December 7, 2000

Erriapus (also Saturn XXVIII) is one of the smaller outer moons of the planet Saturn .

discovery

The discovery of Erriapus by a team of Brett Gladman , John J. Kavelaars , Jean-Marc Petit, Hans Scholl , Matthew J. Holman , Brian G. Marsden , Philip D. Nicholson and Joseph A. Burns on September 23rd through November 27, 2000 was announced on December 7, 2000.
Erriapus was initially given the provisional designation S / 2000 S 10.
The moon was named after Erriapus , a giant from Celtic mythology . Until December 2007, the moon was mistakenly called Erriapo , the dative form of the name Erriapus. The name was changed to Erriapus by IAU decision.

Orbit data

Erriapus orbits Saturn on an eccentric orbit at an average distance of 17,604,000 km in 871 days and 6 hours. The orbit eccentricity is 0.4740, with the orbit at 34.469 ° strongly inclined towards the ecliptic , which at this distance from Saturn represents the Laplace plane .

Erriapus belongs to the Gallic group of Saturn's moons.

Structure and physical data

Erriapus has a diameter of only 8 km. Its density of 2.3 g / m ^{3 is} relatively high compared to the other Saturnian moons. It is probably composed of water ice with a high proportion of silicate rock. It has a very dark surface with an albedo of 0.06, i.e. That is, only 6% of the incident sunlight is reflected .

With an apparent brightness of 23.0 ^m , it is an extremely faint object.

Web links

IAUC 7539: S / 2000 S 10 December 7, 2000 (discovery)
MPEC 2000-Y14: S / 2000 S 3, S / 2000 S 4, S / 2000 S 5, S / 2000 S 6, S / 2000 S 10 December 19, 2000 (ephemeris)
MPEC 2001-T23: S / 2000 S 8, S / 2000 S 10 October 8, 2001 (rediscovery)
IAUC 8177: Satellites of Jupiter, Saturn, Uranus August 8, 2003 (numbering and naming)
IAUC 9191: Saturn XXVIII (Erriapus) January 11, 2011 (renamed)

Individual evidence

↑ 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 .
↑ Spelling of Saturn XXVIII ( Memento of the original dated February 2, 2014 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2

further inside	Saturn moons	further outside
Bebhionn	Semi- major axis (km) Erriapus 17,343,000	S / 2004 S 12

[DenkMottola2019a-1] 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 .

[2] Spelling of Saturn XXVIII ( Memento of the original dated February 2, 2014 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2


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