astro.wikisort.org - AsteroidIstria (minor planet designation: 183 Istria) is a stony background asteroid from the central regions of the asteroid belt, approximately 33 kilometers (21 miles) in diameter. It was discovered on 8 February 1878, by Austrian astronomer Johann Palisa at the Austrian Naval Observatory in Pola, in what is now Croatia.[1] The S-type asteroid has a rotation period of 11.77 hours.[13] It was named for the Istrian Peninsula.[3]
183 Istria Lightcurve-based 3D-model of Istria |
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Discovered by | J. Palisa |
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Discovery site | Austrian Naval Obs. |
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Discovery date | 8 February 1878 |
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MPC designation | (183) Istria |
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Pronunciation | [2] |
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Named after | Istrian Peninsula[3] (in the Adriatic Sea) |
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Alternative designations | 1948 CG |
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Minor planet category | main-belt[1][4] · (middle) background[5][6] |
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Epoch 23 March 2018 (JD 2458200.5) |
Uncertainty parameter 0 |
Observation arc | 112.08 yr (40,937 d) |
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Aphelion | 3.7699 AU |
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Perihelion | 1.8117 AU |
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Semi-major axis | 2.7908 AU |
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Eccentricity | 0.3508 |
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Orbital period (sidereal) | 4.66 yr (1,703 d) |
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Mean anomaly | 61.603° |
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Mean motion | 0° 12m 41.04s / day |
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Inclination | 26.391° |
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Longitude of ascending node | 141.95° |
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Argument of perihelion | 264.12° |
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Mean diameter | 30.779±0.278 km[7] 32.927±0.168 km[8] 34.55±0.84 km[9] 35.43±2.8 km[10] |
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Synodic rotation period | 11.6±0.5 h[11] 11.77 h[12] |
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Geometric albedo | 0.1890±0.034[10] 0.201±0.012[9] 0.227±0.038[8] 0.2582±0.0384[7] |
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Spectral type | Tholen = S[4] SMASS = S[4][13] S[14][15] B–V = 0.842[4] U–B = 0.359[4] |
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Absolute magnitude (H) | 9.56±0.45[15] 9.66[12] 9.68[4][13][7][9][10] |
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Orbit and classification
Istria is a non-family asteroid from the main belt's background population.[5][6] It orbits the Sun in the central main-belt at a distance of 1.8–3.8 AU once every 4 years and 8 months (1,703 days; semi-major axis of 2.79 AU). Its orbit has an eccentricity of 0.35 and an inclination of 26° with respect to the ecliptic.[4]
Physical characteristics
Istria has been characterized as a common, stony S-type asteroid in both the Tholen and SMASS classification.[4]
Rotation period
In August 1979, a rotational lightcurve of Istria was obtained from photometric observations by American astronomer Alain Harris. Lightcurve analysis gave a well-defined rotation period of 11.77 hours with a brightness amplitude of 0.31 magnitude (U=3).[12] Observations by French amateur astronomer Laurent Bernasconi gave a similar period of 11.6 hours (U=2).[11]
Diameter and albedo
According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Istria measures between 30.779 and 35.43 kilometers in diameter and its surface has an albedo between 0.1890 and 0.2582.[7][8][9][10]
Naming
This minor planet was named after the Istrian Peninsula in the Adriatic Sea, where the city of Pula (then Pola) with its discovering observatory is located. A the time the peninsula was part of the Austro-Hungarian Empire. The asteroid's name was given by Vice-Admiral Bernhard von Wüllerstorf-Urbair, who is known as the captain of the first Austrian circumnavigatory adventure with the sail frigate SMS Novara.[3] The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 183).[3]
References
- "183 Istria". Minor Planet Center. Retrieved 30 May 2018.
- Noah Webster (1884) A Practical Dictionary of the English Language
- Schmadel, Lutz D. (2007). "(183) Istria". Dictionary of Minor Planet Names – (183) Istria. Springer Berlin Heidelberg. p. 31. doi:10.1007/978-3-540-29925-7_184. ISBN 978-3-540-00238-3.
- "JPL Small-Body Database Browser: 183 Istria" (2018-03-23 last obs.). Jet Propulsion Laboratory. Retrieved 30 May 2018.
- "Asteroid 183 Istria". Small Bodies Data Ferret. Retrieved 30 May 2018.
- "Asteroid (183) Istria". AstDyS-2, Asteroids – Dynamic Site. Retrieved 30 May 2018.
- Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. (catalog)
- Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv:1406.6645. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121.
- Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. (online, AcuA catalog p. 153)
- Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. 12: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode:2004PDSS...12.....T. Retrieved 22 October 2019.
- Behrend, Raoul. "Asteroids and comets rotation curves – (183) Istria". Geneva Observatory. Retrieved 30 May 2018.
- Harris, A. W.; Young, J. W. (April 1983). "Asteroid rotation. IV". Icarus. 54 (1): 59–109. Bibcode:1983Icar...54...59H. doi:10.1016/0019-1035(83)90072-6. ISSN 0019-1035.
- "LCDB Data for (183) Istria". Asteroid Lightcurve Database (LCDB). Retrieved 30 May 2018.
- Belskaya, I. N.; Fornasier, S.; Tozzi, G. P.; Gil-Hutton, R.; Cellino, A.; Antonyuk, K.; et al. (March 2017). "Refining the asteroid taxonomy by polarimetric observations". Icarus. 284: 30–42. Bibcode:2017Icar..284...30B. doi:10.1016/j.icarus.2016.11.003.
- Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007.
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На других языках
[de] (183) Istria
(183) Istria ist ein Asteroid des Asteroiden-Hauptgürtels, der am 8. Februar 1878 von Johann Palisa am Observatorium von Pola (heute Pula) entdeckt wurde.
- [en] 183 Istria
[es] (183) Istria
(183) Istria es un asteroide perteneciente al cinturón de asteroides descubierto el 8 de febrero de 1878 por Johann Palisa desde el observatorio de Pula, Croacia.[2]
Está nombrado por la homónima península adriática.[3]
[ru] (183) Истрия
(183) Истрия (нем. Istria) — сравнительно небольшой астероид главного пояса, принадлежащий к светлому спектральному классу S. Он был открыт 8 февраля 1878 года австрийским астрономом Иоганном Пализой в обсерватории Пула и назван в честь Истрии, полуострова в Адриатическом море, который был в то время частью Австро-венгерской империи, на западном побережье которого находился город Пула[1].
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