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]
| Discovery | |
|---|---|
| Discovered by | J. Palisa |
| Discovery site | Vienna Obs. |
| Discovery date | 29 September 1911 |
| Designations | |
| (718) Erida | |
| 1911 MS | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 113.31 yr (41,388 d) |
| Aphelion | 3.6666 AU (548.52 Gm) |
| Perihelion | 2.4451 AU (365.78 Gm) |
| 3.0559 AU (457.16 Gm) | |
| Eccentricity | 0.19985 |
| 5.34 yr (1,951.2 d) | |
| 5.10173° | |
| 0° 11m 4.2s / day | |
| Inclination | 6.9294° |
| 38.538° | |
| 174.377° | |
| Physical characteristics | |
| 36.47±2.45 km | |
| 17.447 h (0.7270 d) | |
| 0.0399±0.006 | |
| 9.6 | |
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
edit- ^ a b c "718 Erida (1911 MS)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 5 May 2016.
- ^ Mundt, Carlos S. (1917), "On the orbit of (718) Erida", Lick Observatory Bulletin, 302, Berkeley: University of California Press: 115, Bibcode:1917LicOB...9..115M, doi:10.5479/ADS/bib/1917LicOB.9.115M.
- ^ 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.
- ^ 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.
External links
edit- 718 Erida at AstDyS-2, Asteroids—Dynamic Site
- 718 Erida at the JPL Small-Body Database
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