Herse (moon)

Short description: Natural satellite of Jupiter

HerseDiscovery

Discovered by| Brett J. Gladman
John J. Kavelaars
Jean-Marc Petit
Lynne Allen
Discovery date| 2003
Designations

Designation

| Jupiter L
Pronunciation| /ˈhɜːrsiː/
Named after| Ἕρση Hersē

Alternative names

| S/2003 J 17
Adjectives| Hersean /hɜːrˈsiːən/
Orbital characteristics [1]

Semi-major axis

| 23097000 km
Eccentricity| 0.200
Orbital period| −715.4 days
Mean anomaly| 41.90°
Inclination| 164.2°
Longitude of ascending node| 329.0°

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

| 355.7°
Satellite of| Jupiter
Group| Carme group
Physical characteristics
Mean diameter| 2 km
Apparent magnitude| 23.4

Herse /ˈhɜːrsiː/, or Jupiter L, previously known by its provisional designation of S/2003 J 17, is a natural satellite of Jupiter. It was discovered on 8 February 2003 by the astronomers Brett J. Gladman, John J. Kavelaars, Jean-Marc Petit, and Lynne Allen and also by a team of astronomers at the University of Hawaii.[2][3] It was named after Herse 'dew', by some accounts a daughter of Zeus and Selene the moon in Greek mythology,[4] on 11 November 2009.[5][6] Ersa (Jupiter LXXI) is also named for the same mythological figure.

Herse is about 2 kilometres in diameter, and orbits Jupiter at an average distance of 22,134,000 km in 672.752 days, at a mean inclination of 165° to the ecliptic, in a retrograde direction and with a mean eccentricity of 0.2493.[7]

It is a member of 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. ↑ S.S. Sheppard (2019), Moons of Jupiter, Carnegie Science, on line
2. ↑ Daniel W. E. Green, IAUC 8116: Satellites of Jupiter and Saturn 2003 April 11 (discovery)
3. ↑ Brian G. Marsden, MPEC 2003-G19: S/2003 J 17 2003 April 3 (discovery and ephemeris)
4. ↑ Keightley, p. 55; Hard, p. 46; Alcman, Fragment 57.
5. ↑ Jennifer S. Blue, L Named Herse , 2009 November 9
6. ↑ Jennifer S. Blue, IAUC 9094: Satellite of Jupiter (subscription required) 2009 November 11 (naming)
7. ↑ Planetary Satellite Mean Orbital Parameters, JPL

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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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