Hyrrokkin is about 8 kilometres in diameter,[4] and orbits Saturn at an average distance of 18,168 Mm in 914 days, at an inclination of 153° to the ecliptic (154° to Saturn's equator), in a retrograde direction and with an eccentricity of 0.3582. During four observations in March 2013, the synodic rotational period was measured by the Cassini spacecraft to approximately 12 hours and 45 minutes. The rotation period was later refined to 12.76±0.03 hours.[2] Its light curve shows three minima as seen in Ymir and Siarnaq, but has one minimum much shallower than the others. The rotation period and orbit are similar to Greip's, with only the inclination being appreciably different, but it is not known whether the moons are closely related to each other.[3]
It was named in April 2007 after Hyrrokkin, a giantess from Norse mythology, who launched Hringhorni, Baldr's funeral ship. It was originally listed as being spelled Hyrokkin, but the spelling was later corrected.
Referencesedit
^S.S. Sheppard (2019), Moons of Saturn, Carnegie Science, on line
^ abDenk, T.; Mottola, S. (2019). Cassini Observations of Saturn's Irregular Moons(PDF). 50th Lunar and Planetary Science Conference. Lunar and Planetary Institute.
^ abDenk, 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. ISBN9780816537075.
^Rehnberg, Morgan (14 August 2015). "Cassini studies backwards-orbiting moon Hyrrokkin". Space Exploration Network. SEN. Retrieved 2015-08-17.
External linksedit
IAUC 8727: Satellites of Saturn June 30, 2006 (discovery)
MPEC 2006-M44: S/2004 S 19 June 26, 2006 (discovery and ephemeris)
April 5, 2007 (Naming the moon)
IAUC 8860: Saturn XLIV (Hyrrokkin) July 31, 2007 (correcting the name)
Denk, T., Mottola, S. (2013): Irregular Saturnian Moon Lightcurves from Cassini-ISS Observations: Update. Abstract 406.08, , Denver (Colorado), October 10, 2013 (synodic rotation period)
April 06, 2024
hyrrokkin, moon, hyrrokkin, saturn, xliv, natural, satellite, saturn, discovery, announced, scott, sheppard, david, jewitt, kleyna, brian, marsden, june, 2006, from, observations, taken, between, december, 2004, april, 2006, hyrrokkinhyrrokkin, imaged, cassini. Hyrrokkin h ɪ ˈ r ɒ k en or Saturn XLIV is a natural satellite of Saturn Its discovery was announced by Scott S Sheppard David C Jewitt Jan Kleyna and Brian G Marsden on June 26 2006 from observations taken between December 12 2004 and April 30 2006 HyrrokkinHyrrokkin imaged by the Cassini spacecraft in March 2013DiscoveryDiscovered byScott S SheppardDavid C JewittJan T KleynaBrian G MarsdenDiscovery dateDecember 2004DesignationsDesignationSaturn XLIVNamed afterHyrrokkinAlternative namesS 2004 S 19Orbital characteristics 1 Semi major axis18437 000 kmEccentricity0 333Orbital period sidereal 931 8 daysInclination151 4 Satellite ofSaturnGroupNorse groupPhysical characteristics 2 3 Mean diameter8 50 30 kmSynodic rotation period12 76 0 03 hAlbedo0 06 assumed Apparent magnitude23 5Absolute magnitude H 14 3Hyrrokkin is about 8 kilometres in diameter 4 and orbits Saturn at an average distance of 18 168 Mm in 914 days at an inclination of 153 to the ecliptic 154 to Saturn s equator in a retrograde direction and with an eccentricity of 0 3582 During four observations in March 2013 the synodic rotational period was measured by the Cassini spacecraft to approximately 12 hours and 45 minutes The rotation period was later refined to 12 76 0 03 hours 2 Its light curve shows three minima as seen in Ymir and Siarnaq but has one minimum much shallower than the others The rotation period and orbit are similar to Greip s with only the inclination being appreciably different but it is not known whether the moons are closely related to each other 3 It was named in April 2007 after Hyrrokkin a giantess from Norse mythology who launched Hringhorni Baldr s funeral ship It was originally listed as being spelled Hyrokkin but the spelling was later corrected References edit S S Sheppard 2019 Moons of Saturn Carnegie Science on line a b Denk T Mottola S 2019 Cassini Observations of Saturn s Irregular Moons PDF 50th Lunar and Planetary Science Conference Lunar and Planetary Institute 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 Rehnberg Morgan 14 August 2015 Cassini studies backwards orbiting moon Hyrrokkin Space Exploration Network SEN Retrieved 2015 08 17 External links editScott Sheppard s Saturnian satellites page IAUC 8727 Satellites of Saturn June 30 2006 discovery MPEC 2006 M44 S 2004 S 19 June 26 2006 discovery and ephemeris IAUC 8826 Satellites of Jupiter and Saturn April 5 2007 Naming the moon IAUC 8860 Saturn XLIV Hyrrokkin July 31 2007 correcting the name Denk T Mottola S 2013 Irregular Saturnian Moon Lightcurves from Cassini ISS Observations Update Abstract 406 08 DPS conference 2013 Denver Colorado October 10 2013 synodic rotation period Retrieved from https en wikipedia org w index php title Hyrrokkin moon amp oldid 1212282461, wikipedia, wiki, book, books, library,
