| 词条 | 277 Elvira |
| 释义 |
| minorplanet=yes | background=#D6D6D6 | name=277 Elvira | image=277Elvira (Lightcurve Inversion).png | image_size = 265 | caption=A three-dimensional model of 277 Elvira based on its light curve | discoverer=Auguste Charlois | discovered=3 May 1888 | mpc_name=(277) Elvira | alt_names= | mp_category=Main belt (Koronis) | epoch=31 July 2016 (JD 2457600.5) | semimajor={{Convert|2.88422|AU|Gm|abbr=on}} | perihelion={{Convert|2.62032|AU|Gm|abbr=on}} | aphelion={{Convert|3.14812|AU|Gm|abbr=on|lk=on}} | eccentricity=0.091498 | period=4.90 yr (1789.1 d) | inclination=1.16250° | asc_node=231.271° | arg_peri=137.520° | mean_anomaly=266.399° | dimensions={{val|27.19|0.9|ul=km}}[1] 27.19 km | mass= | density= | rotation={{Convert|29.69|h|d|abbr=on|lk=on}} | spectral_type= | abs_magnitude=9.84[1] | albedo={{val|0.2770|0.020}}[1] 0.277 | mean_motion={{Deg2DMS|0.201216|sup=ms}} / day | orbit_ref=[1] | observation_arc=116.65 yr (42607 d) | uncertainty=0 }}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).[2] 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.[3] 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. References1. ^1 2 3 {{Cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=277;cad=1 |title=277 Elvira |work=JPL Small-Body Database |publisher=NASA/Jet Propulsion Laboratory |access-date=11 May 2016}} 2. ^Schmadel Lutz D. Dictionary of Minor Planet Names (fifth edition), Springer, 2003. {{ISBN|3-540-00238-3}}. 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
7 : Koronis asteroids|Discoveries by Auguste Charlois|Minor planets named for fictional characters|Minor planets named from literature|Named minor planets|S-type asteroids (Tholen)|Astronomical objects discovered in 1888 |
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