183 Istria

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183 Istria
183Istria (Lightcurve Inversion).png
Lightcurve-based 3D-model of Istria
Discovery [1]
Discovered by J. Palisa
Discovery site Austrian Naval Obs.
Discovery date8 February 1878
Designations
(183) Istria
Pronunciation /ˈɪstriə/ [2]
Named after
 Istrian Peninsula [3]
(in the Adriatic Sea)
A878 CD; 1948 CG
main-belt [1] [4]  ·(middle)
background [5] [6]
Orbital characteristics [4]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc 112.08 yr (40,937 d)
Aphelion 3.7699 AU
Perihelion 1.8117 AU
2.7908 AU
Eccentricity 0.3508
4.66 yr (1,703 d)
61.603°
0° 12m 41.04s / day
Inclination 26.391°
141.95°
264.12°
Physical characteristics
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]
11.6±0.5  h [11]
11.77 h [12]
0.1890±0.034 [10]
0.201±0.012 [9]
0.227±0.038 [8]
0.2582±0.0384 [7]
Tholen = S [4]
SMASS = S [4] [13]
S [14] [15]
B–V = 0.842 [4]
U–B = 0.359 [4]
9.56±0.45 [15]
9.66 [12]
9.68 [4] [13] [7] [9] [10]

    Istria (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]

    Contents

    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]

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    References

    1. 1 2 3 "183 Istria". Minor Planet Center. Retrieved 30 May 2018.
    2. ↑ Noah Webster (1884) A Practical Dictionary of the English Language
    3. 1 2 3 4 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.
    4. 1 2 3 4 5 6 7 8 9 "JPL Small-Body Database Browser: 183 Istria" (2018-03-23 last obs.). Jet Propulsion Laboratory . Retrieved 30 May 2018.
    5. 1 2 "Asteroid 183 Istria". Small Bodies Data Ferret. Retrieved 30 May 2018.
    6. 1 2 "Asteroid (183) Istria". AstDyS-2, Asteroids – Dynamic Site. Retrieved 30 May 2018.
    7. 1 2 3 4 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. S2CID   35447010. (catalog)
    8. 1 2 3 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. S2CID   119293330.
    9. 1 2 3 4 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)
    10. 1 2 3 4 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.
    11. 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (183) Istria". Geneva Observatory. Retrieved 30 May 2018.
    12. 1 2 3 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.
    13. 1 2 3 "LCDB Data for (183) Istria". Asteroid Lightcurve Database (LCDB). Retrieved 30 May 2018.
    14. ↑ 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.
    15. 1 2 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. S2CID   53493339.
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