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Telesto (moon)

Trojan moon of Saturn

Field	Value
name	Telesto
image	Telesto N1507754980 2 crop.png
caption	Telesto as seen by the Cassini probe on 11 October 2005
discoverer	{{plainlist
discovered	April 8, 1980
pronounced
adjectives	Telestoan or Telestoian
named_after	Τελεστώ Telestō
mpc_name	Saturn XIII
alt_names	Tethys B
S/1980 S 13
semimajor
eccentricity
period
inclination	1.19° (to Saturn's equator)
satellite_of	Saturn
group	L4 Tethys trojan
dimensions	km
(± km)
mean_diameter
volume
mass	(assumed; unmeasured)
density	(assumed; unmeasured)
surface_grav	≈
escape_velocity	≈ km/s at longest axis
to ≈ km/s at poles
axial_tilt	zero
magnitude	18.7

Bradford A. Smith
Harold Reitsema
Stephen M. Larson
John W. Fountain S/1980 S 13 (± km) to ≈ km/s at poles

Telesto is a moon of Saturn. It was discovered by Smith, Reitsema, Larson and Fountain in 1980 from ground-based observations, and was provisionally designated S/1980 S 13. In the following months, several other apparitions were observed: S/1980 S 24, S/1980 S 33, and S/1981 S 1.

In 1983 it was officially named after Telesto of Greek mythology. It is also designated as Saturn XIII or Tethys B.

Telesto is co-orbital with Tethys, residing in Tethys's leading Lagrangian point (). This relationship was first identified by Seidelmann Harrington et al. 1981}}|Seidelmann et al. in 1981. Another moon, Calypso, resides in the other (trailing) Lagrangian point of Tethys, 60 degrees in the other direction from Tethys. The Saturnian system has two additional trojan moons.

Exploration

The Cassini probe performed a distant flyby of Telesto on October 11, 2005. The resulting images show that its surface is surprisingly smooth, devoid of small impact craters. NOTOC

Notes

| Transactions of the International Astronomical Union, Vol. XVIIIA, 1982 (confirms Janus, names Epimetheus, Telesto, Calypso) (mentioned in )

References

Citations

Sources

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Info: Wikipedia Source

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