Tarvos (moon)

Tarvos
Animation of discovery images taken by the CFHT in September 2000
Discovery[1]
Discovered byB. J. Gladman et al.[2]
Discovery dateSeptember 23, 2000
Designations
Designation
Saturn XXI
Pronunciation/ˈtɑːrvɒs/
Named after
Tarvos Trigaranus
S/2000 S 4
AdjectivesTarvian[3]
Orbital characteristics[4]
Epoch 2000 January 1.5
18.215 Gm
Eccentricity0.528
926.4 d
(2.54 yr)
Inclination38.6°
Satellite ofSaturn
GroupGallic group
Physical characteristics
15+50%
−30% km[5]
Albedo0.06 assumed[5]
Spectral type
light red
B−V=0.77, R−V=0.57[6]
22.1[7]
12.9[7]

Tarvos /ˈtɑːrvɒs/, or Saturn XXI, is a prograde irregular satellite of Saturn. It was discovered by John J. Kavelaars et al. on September 23, 2000, and given the temporary designation S/2000 S 4. The name, given in August 2003, is after Tarvos, a deity depicted as a bull god carrying three cranes alongside its back from Gaulish mythology.[8]

  1. ^ "Planetary Satellite Discovery Circumstances". ssd.jpl.nasa.gov.
  2. ^ "MPEC 2000-Y14 : S/2000 S 3, S/2000 S 4, S/2000 S 5, S/2000 S 6, S/2000 S 10". minorplanetcenter.net. December 19, 2000.
  3. ^ Per the diminutive Tarvillus in Davis, Daniel (2001). The Development of Celtic Linguistics, 1850-1900. p. 162.
  4. ^ Cite error: The named reference JPL was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference LPSC2654 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Grav2003 was invoked but never defined (see the help page).
  7. ^ a b Denk, Tilmann; Mottola, Stefano; Tosi, Frederico; Bottke, William F.; Hamilton, Douglas P. (2018). "The Irregular Satellites of Saturn" (PDF). In Schenk, P.M.; Clark, R.N.; Howett, C.J.A.; Verbiscer, A.J.; Waite, J.H. (eds.). Enceladus and the Icy Moons of Saturn. Space Science Series. Vol. 322. Tucson, AZ: The University of Arizona Press. pp. 409–434. Bibcode:2018eims.book..409D. doi:10.2458/azu_uapress_9780816537075-ch020. ISBN 9780816537075.
  8. ^ "IAUC 8177: Sats OF (22); Sats OF JUPITER, SATURN, URANUS". www.cbat.eps.harvard.edu. August 8, 2003.