Astronomy:277 Elvira
.png) A three-dimensional model of 277 Elvira based on its light curve | |
| Discovery | |
|---|---|
| Discovered by | Auguste Charlois |
| Discovery date | 3 May 1888 |
| Designations | |
| (277) Elvira | |
| A888 JA | |
| Minor planet category | Main belt (Koronis) |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 116.65 yr (42607 d) |
| |{{{apsis}}}|helion}} | 3.14812 astronomical unit|AU (470.952 Gm) |
| |{{{apsis}}}|helion}} | 2.62032 AU (391.994 Gm) |
| 2.88422 AU (431.473 Gm) | |
| Eccentricity | 0.091498 |
| Orbital period | 4.90 yr (1789.1 d) |
| Mean anomaly | 266.399° |
| Mean motion | 0° 12m 4.378s / day |
| Inclination | 1.16250° |
| Longitude of ascending node | 231.271° |
| 137.520° | |
| Physical characteristics | |
| Dimensions | 27.19±0.9 km[1] 27.19 km[2] |
| Rotation period | 29.69 h (1.237 d) |
| Geometric albedo | 0.2770±0.020[1] 0.277[2] |
| Absolute magnitude (H) | 9.84[1][2] |
Elvira (minor planet designation: 277 Elvira) is a typical main belt asteroid and is a member of the Koronis asteroid family. It was discovered by Auguste Charlois on 3 May 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 J m−2 K−1 s−1/2, compared to 50 for lunar regolith and 400 for coarse sand in an atmosphere.[2]
References
- ↑ 1.0 1.1 1.2 1.3 "277 Elvira". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=277;cad=1.
- ↑ 2.0 2.1 2.2 2.3 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, doi:10.1016/j.pss.2008.06.015, Bibcode: 2009P&SS...57..259D.
- ↑ Schmadel Lutz D. Dictionary of Minor Planet Names (fifth edition), Springer, 2003. ISBN:3-540-00238-3.
- ↑ 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
- 277 Elvira at AstDyS-2, Asteroids—Dynamic Site
- 277 Elvira at the JPL Small-Body Database
 |  |
