718 Erida
Discovery
Discovered byJ. Palisa
Discovery siteVienna Obs.
Discovery date29 September 1911
Designations
(718) Erida
1911 MS
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc113.31 yr (41,388 d)
Aphelion3.6666 AU (548.52 Gm)
Perihelion2.4451 AU (365.78 Gm)
3.0559 AU (457.16 Gm)
Eccentricity0.19985
5.34 yr (1,951.2 d)
5.10173°
0° 11m 4.2s / day
Inclination6.9294°
38.538°
174.377°
Physical characteristics
Mean radius
36.47±2.45 km
17.447 h (0.7270 d)
0.0399±0.006
9.6

    718 Erida is a minor planet orbiting the Sun. It was discovered at Vienna on September 29, 1911, by Austrian astronomer Johann Palisa,[2] and was named for Erida Leuschner, daughter of astronomer Armin Otto Leuschner.[3] It is orbiting at a distance of 3.06 AU with a period of 5.34 yr and an eccentricity of 0.20. The orbital plane of this asteroid is inclined by an angle of 6.9° to the plane of the ecliptic.[1]

    Photometric observations made during 2009 were used to produce a light curve for this asteroid that showed a rotation period of 17.447±0.002 h with a brightness variation of 0.37 in magnitude.[4] It spans a girth of approximately 72 km.[1]

    References

    1. 1 2 3 "718 Erida (1911 MS)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 5 May 2016.
    2. Mundt, Carlos S. (1917), "On the orbit of (718) Erida", Lick Observatory Bulletin, Berkeley: University of California Press, 302: 115, Bibcode:1917LicOB...9..115M, doi:10.5479/ADS/bib/1917LicOB.9.115M.
    3. Schmadel, Lutz D. (2007). "(718) Erida". Dictionary of Minor Planet Names – (718) Erida. Springer Berlin Heidelberg. p. 69. doi:10.1007/978-3-540-29925-7_719. ISBN 978-3-540-00238-3.
    4. Galad, Adrian; Vilagi, Jozef; Kornos, Leonard; Gajdos, Stefan (July 2009), "Relative Photometry of Nine Asteroids from Modra", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers, 36 (3): 116–118, Bibcode:2009MPBu...36..116G.


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