255 Oppavia

255 Oppavia
Discovery
Discovered by	Johann Palisa
Discovery date	31 March 1886
Designations
MPC designation	(255) Oppavia
Pronunciation	/ɒˈpeɪviə/
Named after	Opava
Alternative designations	A886 FB, 1904 EC; 1924 TA, 1938 VC; 1938 XC, 1945 GD; 1951 SG
Minor planet category	Main belt
Orbital characteristics[1]
	Epoch 31 July 2016 (JD 2457600.5)
	Uncertainty parameter 0
Observation arc	129.86 yr (47,431 d)
Aphelion	2.959 AU (442.6 Gm)
Perihelion	2.533 AU (379.0 Gm)
Semi-major axis	2.746 AU (410.8 Gm)
Eccentricity	0.077427
Orbital period (sidereal)	4.551 yr (1,662.1 d)
Average orbital speed	17.98 km/s
Mean anomaly	261.139°
Mean motion	0° 12m 59.735s / day
Inclination	9.47209°
Longitude of ascending node	13.6708°
Argument of perihelion	156.011°
Physical characteristics
Dimensions	57.40±1.5 km
Synodic rotation period	19.499 h (0.8125 d)
Geometric albedo	0.0374±0.002
Spectral type	X[2]
Absolute magnitude (H)	10.39

Oppavia (minor planet designation: 255 Oppavia) is a sizeable Main belt asteroid. It was discovered by Austrian astronomer Johann Palisa on 31 March 1886 in Vienna and was named after Opava, a town in the Czech Republic, then part of Austria-Hungary, where Palisa was born.[3] It is orbiting the Sun at a distance of 2.75 AU with an orbital eccentricity (ovalness) of 0.077 and a period of 4.55 yr. The orbital plane is inclined by an angle of 9.47° to the plane of the ecliptic.[1]

Photometric observations made during 2013 indicate a synodic rotation period of 19.499±0.001 h with an amplitude of 0.16±0.02 in magnitude. The unusual light curve shows three uneven minima and maxima per cycle.[4] In 1995, 255 Oppavia was suggested as a peripheral member of the now defunct Ceres asteroid family,[5] but was found to be an unrelated interloper on the basis of its non-matching spectral type. It classified as a dark X-type asteroid in the Tholen taxonomy.[2]

References

"255 Oppavia". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016.
Lazzaro, D.; Angeli, C. A.; Carvano, J. M.; Mothé-Diniz, T.; Duffard, R.; Florczak, M. (November 2004). "S³OS²: the visible spectroscopic survey of 820 asteroids" (PDF). Icarus. 172 (1): 179–220. Bibcode:2004Icar..172..179L. doi:10.1016/j.icarus.2004.06.006. Retrieved 9 March 2022.
Schmadel, Lutz D. (2013). Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 56. ISBN 9783662066157.
Pilcher, Frederick (July 2013). "Rotation Period Determinations for 102 Miriam, 108 Hecuba, 221 Eos 225 Oppavia, and 745 Mauritia, and a Note on 871 Amneris". Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers. 40 (3): 158–160. Bibcode:2013MPBu...40..158P.
Morbidelli, A.; et al. (November 1995). "Asteroid Families Close to Mean Motion Resonances: Dynamical Effects and Physical Implications" (PDF). Icarus. 118 (1): 132–154. Bibcode:1995Icar..118..132M. doi:10.1006/icar.1995.1181. Retrieved 9 April 2022.

External links

The Asteroid Orbital Elements Database
Minor Planet Discovery Circumstances
Asteroid Lightcurve Data File
Orbital simulation of asteroid 255 Oppavia
Asteroid 255 Oppavia in Planetky z našich luhů a hájů (in Czech)
255 Oppavia at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
255 Oppavia at the JPL Small-Body Database

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[jpldata-1] "255 Oppavia". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016.

[Lazzaro_et_al_2004-2] Lazzaro, D.; Angeli, C. A.; Carvano, J. M.; Mothé-Diniz, T.; Duffard, R.; Florczak, M. (November 2004). "S³OS²: the visible spectroscopic survey of 820 asteroids" (PDF). Icarus. 172 (1): 179–220. Bibcode:2004Icar..172..179L. doi:10.1016/j.icarus.2004.06.006. Retrieved 9 March 2022.

[Schmadel2013-3] Schmadel, Lutz D. (2013). Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 56. ISBN 9783662066157.

[Pilcher2013-4] Pilcher, Frederick (July 2013). "Rotation Period Determinations for 102 Miriam, 108 Hecuba, 221 Eos 225 Oppavia, and 745 Mauritia, and a Note on 871 Amneris". Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers. 40 (3): 158–160. Bibcode:2013MPBu...40..158P.

[Morbidelli_et_al_1995-5] Morbidelli, A.; et al. (November 1995). "Asteroid Families Close to Mean Motion Resonances: Dynamical Effects and Physical Implications" (PDF). Icarus. 118 (1): 132–154. Bibcode:1995Icar..118..132M. doi:10.1006/icar.1995.1181. Retrieved 9 April 2022.