Kari (moon)

Moon of Saturn

For the asteroid, see 832 Karin.

Kari

Kari imaged by the Cassini spacecraft in May 2017

Discovery
Discovered by| Scott S. Sheppard
David C. Jewitt
Jan T. Kleyna
Brian G. Marsden
Discovery date| 2006
Designations

Designation

| Saturn XLV
Pronunciation| Icelandic: [ˈkʰauːrɪ]

Named after

| Kári

Alternative names

| S/2006 S 2
Orbital characteristics[1]

Semi-major axis

| 22118000 km
Eccentricity| 0.478

Orbital period (sidereal)

| −1233.6 days
Inclination| 156.3°
Satellite of| Saturn
Group| Norse group
Physical characteristics[2][3]

Mean diameter

| 6+50%
−30% km

Synodic rotation period

| 7.70±0.14 h
Albedo| 0.06 (assumed)

Spectral type

| g – r = 0.31 ± 0.07, r – i = 0.53 ± 0.09[4]

Apparent magnitude

| 23.9

Absolute magnitude (H)

| 14.8

Kari or Saturn XLV is a natural satellite of Saturn. Its discovery was announced by Scott S. Sheppard, David C. Jewitt, Jan Kleyna, and Brian G. Marsden on 26 June 2006 from observations taken between January and April 2006.

Kari is about 6 kilometres in diameter, and orbits Saturn at an average distance of 22,305,100 km in 1243.71 days, at an inclination of 148.4° to the ecliptic (151.5° to Saturn's equator), in a retrograde direction and with an eccentricity of 0.3405. The rotation period has been determined to be 7.7±0.14 hours.[2] The light curve is similar to Hyrrokkin's, having two deep and one shallow minima, and the moon is probably triangular in shape.[3]

It was named in April 2007 after Kári, son of Fornjót, the personification of wind in Norse mythology.

## References

[edit]

1. ^ S.S. Sheppard (2019), Moons of Saturn, Carnegie Science, on line
2. ^ 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.
3. ^ 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 9780816537075.409-434&rft.pub=The+University+of+Arizona+Press&rft.date=2018&rft_id=info:doi/10.2458/azu_uapress_9780816537075-ch020&rft_id=info:bibcode/2018eims.book..409D&rft.isbn=9780816537075&rft.aulast=Denk&rft.aufirst=Tilmann&rft.au=Mottola,+Stefano&rft.au=Tosi,+Frederico&rft.au=Bottke,+William+F.&rft.au=Hamilton,+Douglas+P.&rft_id=https://tilmanndenk.de/wp-content/uploads/DenkEtAl2018_IrregularMoons.pdf&rfr_id=info:sid/en.wikipedia.org:Kari+(moon)" class="Z3988">
4. ^ Peña, José; Fuentes, Cesar (2022-05-17). "Colors of Irregular Satellites of Saturn with the Dark Energy Camera". The Astronomical Journal. 163 (6): 274. arXiv:2204.08391. Bibcode:2022AJ....163..274P. doi:10.3847/1538-3881/ac6258. ISSN 1538-3881.

## External links

[edit]

* Institute for Astronomy Saturn Satellite Data
* IAUC 8727: Satellites of Saturn June 30, 2006 (discovery)
* MPEC 2006-M45: Eight New Satellites of Saturn June 26, 2006 (discovery and ephemeris)
* IAUC 8826: Satellites of Jupiter and Saturn April 5, 2007 (naming the moon)
* 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)

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* S/2005 S 6
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|

Kari subgroup (16)|

* S/2019 S 28
* S/2006 S 25
* S/2006 S 1
* S/2004 S 45
* S/2023 S 33
* S/2020 S 30
* S/2006 S 3
* Kari
* Geirrod
* S/2019 S 17
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* S/2004 S 21
* S/2004 S 36
* S/2023 S 45
* S/2019 S 20

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* S/2004 S 56
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* S/2006 S 21
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* S/2023 S 50
* Skoll
* S/2020 S 18
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* S/2020 S 2
* S/2023 S 4
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* S/2004 S 41
* S/2004 S 57
* S/2020 S 20
* S/2006 S 24
* S/2004 S 42
* S/2019 S 35
* S/2004 S 13
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* Mundilfari
* S/2023 S 21
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* S/2019 S 33
* S/2004 S 43
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* Gridr
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* S/2023 S 24
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* S/2006 S 13
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* S/2023 S 48
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