Chaldene

Chaldene imaged by the Canada-France-Hawaii Telescope in December 2001

Discovery[1]
Discovered by| Scott S. Sheppard
David C. Jewitt
Yanga R. Fernandez
Eugene A. Magnier
Discovery site| Mauna Kea Observatory
Discovery date| 23 November 2000
Designations

Designation

| Jupiter XXI
Pronunciation| /kælˈdiːniː/
Named after| Χαλδηνή Chaldēnē

Alternative names

| S/2000 J 10
Adjectives| Chaldenean /kældɪˈniːən/
Orbital characteristics[2]
Epoch 27 April 2019 (JD 2458600.5)
Observation arc| 17.46 yr (6,376 days)

Semi-major axis

| 0.1604721 astronomical unit|AU (24,006,280 km)
Eccentricity| 0.1500864
Orbital period| –759.88 d
Mean anomaly| 159.35152°
Mean motion| 0° 28m 25.54s / day
Inclination| 164.25379° (to ecliptic)
Longitude of ascending node| 215.26817°

|{{{apsis}}}|helion}}

| 340.66981°
Satellite of| Jupiter
Group| Carme group
Physical characteristics[5]
Mean diameter| 4 km
Albedo| 0.04 (assumed)

Spectral type

| B–V = 0.82 ± 0.05, V–R = 0.50 ± 0.05[3]
Apparent magnitude| 22.5[4]
Absolute magnitude (H)| 16.0[2]

Chaldene /kælˈdiːniː/, also known as Jupiter XXI, is a retrograde irregular satellite of Jupiter. It was discovered by a team of astronomers from the University of Hawaii led by Scott S. Sheppard, in 2000, and given the temporary designation S/2000 J 10.[6][1][7]

Chaldene is about 3.8 kilometres in diameter, and orbits Jupiter at an average distance of 22,713,000 km in 759.88 days, at an inclination of 167° to the ecliptic (169° to Jupiter's equator), in a retrograde direction and with an eccentricity of 0.2916.

It was named in October 2002 after Chaldene, the mother of Solymos by Zeus in Greek mythology.[8]

It belongs to the Carme group, made up of irregular retrograde moons orbiting Jupiter at a distance ranging between 23 and 24 Gm and at an inclination of about 165°.

## References

1. ↑ 1.0 1.1 MPEC 2001-A29: S/2000 J 7, S/2000 J 8, S/2000 J 9, S/2000 J 10, S/2000 J 11 2001 January 15 (discovery and ephemeris)
2. ↑ 2.0 2.1 "M.P.C. 115890". Minor Planet Circular. Minor Planet Center. 27 August 2019. https://minorplanetcenter.net/iau/ECS/MPCArchive/2019/MPC_20190827.pdf.
3. ↑ Graykowski, Ariel; Jewitt, David (2018-04-05). "Colors and Shapes of the Irregular Planetary Satellites" (in en). The Astronomical Journal 155 (4): 184. doi:10.3847/1538-3881/aab49b. ISSN 1538-3881. https://iopscience.iop.org/article/10.3847/1538-3881/aab49b.
4. ↑ Sheppard, Scott. "Scott S. Sheppard – Jupiter Moons". Department of Terrestrial Magnetism. Carnegie Institution for Science. https://sites.google.com/carnegiescience.edu/sheppard/moons/jupitermoons. Retrieved 26 November 2020.
5. ↑ "Planetary Satellite Physical Parameters". Jet Propulsion Laboratory. 19 February 2015. https://ssd.jpl.nasa.gov/?sat_phys_par#jupiter. Retrieved 26 November 2020.
6. ↑ IAUC 7555: Satellites of Jupiter 2001 January 5 (discovery)
7. ↑ MPEC 2001-T59: S/2000 J 8, S/2000 J 9, S/2000 J 10 2001 October 15 (revised ephemeris)
8. ↑ IAUC 7998: Satellites of Jupiter 2002 October 22 (naming the moon)

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* e

Moons of Jupiter

Listed in approximately increasing distance from Jupiter. Provisional designations in italics.

Inner moons|

* Metis
* Adrastea
* Amalthea
* Thebe

Galilean moons|

* Io
* Europa
* Ganymede
* Callisto

Themisto group|

* Themisto

Himalia group|

* Leda
* Himalia
* Ersa
* Pandia
* Lysithea
* Elara
* Dia

Carpo group|

* Carpo

Valetudo group|

* Valetudo

Ananke group|

* S/2003 J 12(?)
* Euporie
* Eupheme
* Jupiter LV
* Jupiter LII
* Thelxinoe
* Euanthe
* Helike
* Orthosie
* Jupiter LXVIII
* Jupiter LIV
* Jupiter LXIV
* Iocaste
* S/2003 J 16(?)
* Praxidike
* Harpalyke
* Mneme
* Hermippe
* Thyone
* Jupiter LXX
* Ananke

Carme group|

* Jupiter LXXII
* Herse
* Aitne
* Kale
* Taygete
* Jupiter LXI
* Chaldene
* S/2003 J 10(?)
* Erinome
* Kallichore
* Jupiter LXVI
* Jupiter LXIX
* Kalyke
* Carme
* Jupiter LXIII
* Pasithee
* Jupiter LI
* Eukelade
* Arche
* Isonoe
* S/2003 J 9(?)
* Eirene

Pasiphae group|

* Jupiter LXVII
* Philophrosyne
* S/2003 J 23(?)
* Aoede
* Callirrhoe
* Eurydome
* Kore
* Cyllene
* Jupiter LVI
* Jupiter LIX
* S/2003 J 4(?)
* Pasiphae
* Hegemone
* Sinope
* Sponde
* Autonoe
* Megaclite
* S/2003 J 2(?)

* Rings of Jupiter
* In fiction

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