27 Euterpe
.png) A three-dimensional model of 27 Euterpe based on its light curve. | |
| Discovery | |
|---|---|
| Discovered by | J. R. Hind |
| Discovery date | November 8, 1853 |
| Designations | |
Designation | (27) Euterpe |
| Pronunciation | /juːˈtɜːrpiː/ ew-TUR-pee |
Named after | Euterpē |
| 1945 KB | |
| Main belt | |
| Orbital characteristics | |
| Epoch June 14, 2006 (JD 2453900.5) | |
| Aphelion | 411.552 Gm (2.751 AU) |
| Perihelion | 290.966 Gm (1.945 AU) |
| 351.259 Gm (2.348 AU) | |
| Eccentricity | 0.172 |
| 1314.171 d (3.60 a) | |
Average orbital speed | 19.29 km/s |
| 126.457° | |
| Inclination | 1.584° |
| 94.807° | |
| 356.754° | |
| Physical characteristics | |
| Dimensions | 124×75 km (Dunham)† 105.80 ± 7.23 km[1] |
| Mass | (1.67 ± 1.01) × 1018 kg[1] |
Mean density | 2.69 ± 1.71 g/cm3[1] |
| 0.0268? m/s² | |
| 0.0508? km/s | |
| 0.4338 d (10.41 h) [2] | |
| Albedo | 0.162 (geometric) [3] |
| Temperature | ~178 K |
Spectral type | S |
| 8.30 to 12.55 | |
| 7.0 | |
| 0.13" to 0.035" | |
27 Euterpe is a large main-belt asteroid. It was discovered by J. R. Hind on November 8, 1853, and named after Euterpē, the Muse of music in Greek mythology.
Euterpe is one of the brightest asteroids in the night sky.[4] On December 25, 2015, during a perihelic opposition, it will shine with an apparent magnitude of 8.3.[5]
Euterpe has been studied by radar.[6][vague]
References
- ^ a b c Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, vol. 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
- ^ http://www.psi.edu/pds/asteroid/EAR_A_5_DDR_DERIVED_LIGHTCURVE_V8_0/data/lc.tab
- ^ http://www.psi.edu/pds/asteroid/EAR_A_5_DDR_ALBEDOS_V1_1/data/albedos.tab
- ^ "Bright Minor Planets 2004". Minor Planet Center. Retrieved 2008-05-20.
- ^ Yeomans, Donald K. "Horizons Online Ephemeris System". California Institute of Technology, Jet Propulsion Laboratory. Retrieved 2008-05-20.
- ^ "Radar-Detected Asteroids and Comets". NASA/JPL Asteroid Radar Research. Retrieved 2011-10-30.
External links
- Lightcurve plot of 27 Euterpe, Palmer Divide Observatory, B. D. Warner (2000)
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- JPL Ephemeris
- 27 Euterpe at the JPL Small-Body Database
