277 Elvira

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277 Elvira
277Elvira (Lightcurve Inversion).png
A three-dimensional model of 277 Elvira based on its light curve.
Discovery
Discovered by Auguste Charlois
Discovery date 3 May 1888
Designations
Main belt (Koronis)
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 116.65 yr (42607 d)
Aphelion 3.14812 AU (470.952 Gm)
Perihelion 2.62032 AU (391.994 Gm)
2.88422 AU (431.473 Gm)
Eccentricity 0.091498
4.90 yr (1789.1 d)
17.53 km/s
266.399°
0° 12m 4.378s / day
Inclination 1.16250°
231.271°
137.520°
Earth MOID 1.61832 AU (242.097 Gm)
Jupiter MOID 2.30065 AU (344.172 Gm)
Jupiter Tisserand parameter 3.287
Physical characteristics
Dimensions 27.19±0.9 km[1]
27.19 km[2]
29.69 h (1.237 d)
0.2770±0.020[1]
0.277[2]
9.84[1][2]

277 Elvira is a typical main belt asteroid and is a member of the Koronis asteroid family. It was discovered by Auguste Charlois on May 3, 1888 in Nice. (277) Elvira is possibly named for a character in Alphonse de Lamartine’s Méditations poétiques (1820) and Harmonies poétiques et religieuses (1830).[3]

A group of astronomers, including Lucy D’Escoffier Crespo da Silva and Richard P. Binzel, used observations made between 1998 through 2000 to determine the spin-vector alignment of the Koronis family of asteroids, including 277 Elvira. The collaborative work resulted in the creation of 61 new individual rotation lightcurves to augment previous published observations.[4]

Measurements of the thermal inertia of 277 Elvira give a value of around 190 m−2 K−1 s−1/2, compared to 50 for lunar regolith and 400 for coarse sand in an atmosphere.[2]

References[edit]

  1. ^ a b c d "277 Elvira". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 11 May 2016. 
  2. ^ a b c d Delbo', Marco; Tanga, Paolo (February 2009), "Thermal inertia of main belt asteroids smaller than 100 km from IRAS data", Planetary and Space Science, 57 (2), pp. 259–265, arXiv:0808.0869free to read, Bibcode:2009P&SS...57..259D, doi:10.1016/j.pss.2008.06.015. 
  3. ^ Schmadel Lutz D. Dictionary of Minor Planet Names (fifth edition), Springer, 2003. ISBN 3-540-00238-3.
  4. ^ Slivan, S. M., Binzel, R. P., Crespo da Silva, L. D., Kaasalainen, M., Lyndaker, M. M., Krco, M.: “Spin vectors in the Koronis family: comprehensive results from two independent analyses of 213 rotation lightcurves,”Icarus, 162, 2003, pp. 285-307.

External links[edit]