S / 2004 S 30

S / 2004 S 30
Central body	Saturn
Properties of the orbit
Major semi-axis	20,821,196 km
Periapsis	18,326,473 km
Apoapsis	23,315,919 km
eccentricity	0.1198
Orbit inclination	157.51 °
Orbital time	1121.69 d
Mean orbital velocity	1.339 km / s
Physical Properties
Apparent brightness	25.4 mag
Medium diameter	3 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 30 is one of the smaller outer moons of the planet Saturn .

Discovery and naming

S / 2004 S 30 was discovered on December 12, 2004 by astronomers Scott Sheppard and David Jewitt ( University of California ) and 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 preliminary designation S / 2004 S 30 .

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 30 extends from December 12, 2004 to March 21, 2007; there are a total of 24 observations over a period of three years.

Track properties

S / 2004 S 30 orbits Saturn in three years and 26.7 days on a slightly elliptical, retrograde orbit between 18,326,473 km and 23,315,919 km from its center. The orbital eccentricity is 0.120, the orbit is inclined 157.5 ° to the equator of Saturn .

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 30 has a diameter of about 3 km. The absolute brightness of the moon is 15.9 ^m .

Web links

Astronews.com: Ring Planet's 20 new moons discovered October 8, 2019 (discovery)

Individual evidence

↑ v ≈ π * a / period (1 + sqrt (1-e²))
^ Scott S. Sheppard : Saturn Moons . Carnegie Institution for Science . Retrieved October 10, 2019.
↑ MPC : MPEC 2019-T137: S / 2004 S 30 . IAU . October 7, 2019. Retrieved October 10, 2019.
↑ MPC : MPEC 2019-T140: S / 2004 S 30 . IAU . October 7, 2019. Retrieved October 10, 2019.

further inside	Saturn moons	further outside
Aegir	Semi- major axis (km) S / 2004 S 30 20.821.196	S / 2006 S 3

[MittOrbGesch-1] v ≈ π * a / period (1 + sqrt (1-e²))

[SheppardSaturnMoons-2] Scott S. Sheppard : Saturn Moons . Carnegie Institution for Science . Retrieved October 10, 2019.

[Mpec2019T137-3] MPC : MPEC 2019-T137: S / 2004 S 30 . IAU . October 7, 2019. Retrieved October 10, 2019.

[Mpec2019T140-4] MPC : MPEC 2019-T140: S / 2004 S 30 . IAU . October 7, 2019. Retrieved October 10, 2019.


earth	moon
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Pluto	Charon • Hydra • Kerberos • Nix • Styx
Haumea	Hi'iaka • Namaka
Makemake	S / 2015 (136472) 1
Eris	Dysnomia