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Lameia (minor planet designation: 248 Lameia) is a typical main belt asteroid. It was discovered by Austrian astronomer Johann Palisa on 5 June 1885 in Vienna and was named after the Lamia, a lover of Zeus in Ancient Greek mythology. 248 Lameia is orbiting the Sun with a period of 3.88 years and a low eccentricity (ovalness) of 0.067.[2] The semimajor axis of 2.47 AU is slightly inward from the 3:1 Kirkwood Gap.[4] Its orbital plane is inclined by 4° to the plane of the ecliptic.[2]

248 Lameia
Discovery
Discovered byJohann Palisa
Discovery date5 June 1885
Designations
MPC designation
(248) Lameia
Pronunciation/ləˈmiːə/[1]
Named after
Lamia
Alternative designations
A885 LA, 1959 LO
Minor planet category
Main belt
Orbital characteristics[2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc130.86 yr (47,796 d)
Aphelion2.64 AU (394.30 Gm)
Perihelion2.31 AU (345.06 Gm)
Semi-major axis
2.47 AU (369.67 Gm)
Eccentricity0.066588
Orbital period (sidereal)
3.88 yr (1,418.9 d)
Average orbital speed
18.95 km/s
Mean anomaly
264.207°
Mean motion
0° 15m 13.392s / day
Inclination4.0581°
Longitude of ascending node
246.845°
Argument of perihelion
10.782°
Physical characteristics
Dimensions48.66±2.5 km[3]
Synodic rotation period
11.912 h (0.4963 d)
Geometric albedo
0.0615±0.007
Absolute magnitude (H)
10.2

    On 27 June 1998 an occultation of the 8th magnitude star PPM 236753 (HD 188960)[5] by 248 Lameia was timed by five observers near Gauteng, South Africa. The chords produced a rough size estimate of a 62 × 53 km ellipse.[6] The size estimate based on IRAS Minor Planet Survey data is ~49 km. The rotation rate of this object is commensurate with the rotation of the Earth, requiring observations from different locations to build a complete light curve. These yield a rotation estimate of 11.912±0.001 h with a brightness variation of 0.17±0.01 magnitude in amplitude. The same data set gives a size estimate of 47±3 km, in agreement with earlier measurements.[3]

    Infrared imaging of this body shows a relatively featureless spectra that suggests materials that are similar to carbonaceous chondrite meteorites.[7]


    References


    1. 'Lamea' in Noah Webster (1884) A Practical Dictionary of the English Language
    2. "248 Lameia". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016.
    3. Pilcher, Frederick; et al. (April 2015). "Rotation Period and H-G Parameters Determination for 248 Lameia". Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers. 42 (2): 137–139. Bibcode:2015MPBu...42..137P.
    4. Saha, Prasenjit (December 1992). "Simulating the 3:1 Kirkwood gap". Icarus. 100 (2): 434–439. Bibcode:1992Icar..100..434S. doi:10.1016/0019-1035(92)90109-K.
    5. "HD 188960". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 24 November 2020.
    6. Fraser, B.; Overbeek, M. D. (1998). "Occultation Observation of PPM 236753 by 248 Lameia, 1998 June 27". Monthly Notes of the Astronomical Society of Southern Africa. 57: 85. Bibcode:1998MNSSA..57...85F.
    7. Fieber-Beyer, Sherry K.; Gaffey, Michael J. (September 2015). "Near-infrared spectroscopy of 3:1 Kirkwood Gap asteroids III". Icarus. 257: 113–125. Bibcode:2015Icar..257..113F. doi:10.1016/j.icarus.2015.04.034.



    На других языках

    [de] (248) Lameia

    (248) Lameia ist ein Asteroid des inneren Asteroiden-Hauptgürtels, der am 5. Juni 1885 von Johann Palisa am Observatorium von Wien entdeckt wurde.
    - [en] 248 Lameia

    [es] (248) Lameia

    (248) Lameia es un asteroide perteneciente al cinturón de asteroides descubierto el 5 de junio de 1885 por Johann Palisa desde el observatorio de Viena, Austria. Está nombrado por Lamia,[2] un personaje de la mitología griega.[3]

    [ru] (248) Ламия

    (248) Лами́я (др.-греч. Λάμια) — типичный астероид главного пояса, который был открыт 5 июня 1885 года австрийским астрономом Иоганном Пализой в Венской обсерватории и назван в честь Ламии, которая, согласно древнегреческой мифологии, являлась дочерью Посейдона и возлюбленной Зевса[1].


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