1700 Zvezdara

1700 Zvezdara, provisional designation 1940 QC, is a dark asteroid from the inner regions of the asteroid belt, approximately 21 kilometers in diameter. It was discovered on 27 August 1940, by Serbian astronomer Petar Đurković at Belgrade Astronomical Observatory, Serbia, and named after the Zvezdara hill in Belgrade.[2][9]

1700 Zvezdara
Discovery [1]
Discovered byP. Djurkovic
Discovery siteBelgrade Obs.
Discovery date27 August 1940
Designations
(1700) Zvezdara
Named after
Zvezdara
(location, "star-house")[2]
1940 QC · 1929 PM
1951 SB · 1951 SO
1955 XP · 1962 WJ
main-belt · (inner) [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc87.38 yr (31,916 days)
Aphelion2.8944 AU
Perihelion1.8266 AU
2.3605 AU
Eccentricity0.2262
3.63 yr (1,325 days)
60.598°
0° 16m 18.48s / day
Inclination4.5153°
356.96°
15.308°
Physical characteristics
Dimensions20.176±0.209 km [4]
20.86 km (derived)[3]
21.71±0.41 km[5]
9.114±0.001 h[6]
9.114±0.008 h[lower-alpha 1]
0.039±0.002[5]
0.0425 (derived)[3]
0.045±0.006[4]
Tholen = X [1] · X [3]
B–V = 0.720[1]
U–B = 0.322[1]
11.96±0.77[7] · 12.447±0.017[6] · 12.45[3] · 12.47(IRAS:10)[8] · 12.47[4][5]

    Orbit and classification

    The asteroid orbits the Sun in the inner main-belt at a distance of 1.8–2.9 AU once every 3 years and 8 months (1,325 days). Its orbit has an eccentricity of 0.23 and an inclination of 5° with respect to the ecliptic.[1] It was first identified as 1929 PM at Johannesburg Observatory in 1929, extending the body's observation arc by 11 years prior to its official discovery observation at Belgrade.[9]

    Physical characteristics

    Zvezdara is characterized as an X-type asteroid in the Tholen classification.[1]

    Lightcurves

    In September 2009, two rotational lightcurves of Zvezdara were obtained from observations, after being identified as a good candidate for photometry.[10] They gave an identical rotation period of 9.114 hours with a brightness variation of 0.10 and 0.13 magnitude, respectively (U=3/3-).[6][lower-alpha 1]

    Diameter and albedo

    According to the survey carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Zvezdara measures 20.17 and 21.71 kilometers in diameter and its surface has an albedo of 0.045 and 0.039, respectively.[4][5] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.043 and a diameter of 20.86 kilometers based on an absolute magnitude of 12.45,[3] similar to one of the lightcurve studies that calculated a diameter of 20.89 kilometers.[6]

    Naming

    This minor planet is named after the hilly Zvezdara municipality of the city of Belgrade. It is the location of the Belgrade Observatory, founded in 1934.[2] The Serbian word Zvezdara means "star-house" when literally translated. Zvezdara was one of two asteroids discovered by Petar Đurković, the other being 1605 Milankovitch. The official naming citation was published by the Minor Planet Center on 1 August 1980 (M.P.C. 5449).[11]

    Notes
    1. Higgins (2011) web, rotation period 9.114±0.008 with an amplitude of 0.008 magnitude and quality: 3-; summary figures at Light Curve Database, (1700) Zvezdara

    References
    1. "JPL Small-Body Database Browser: 1700 Zvezdara (1940 QC)" (2016-12-25 last obs.). Jet Propulsion Laboratory. Retrieved 6 June 2017.
    2. Schmadel, Lutz D. (2007). "(1700) Zvezdara". Dictionary of Minor Planet Names – (1700) Zvezdara. Springer Berlin Heidelberg. p. 135. doi:10.1007/978-3-540-29925-7_1701. ISBN 978-3-540-00238-3.
    3. "LCDB Data for (1700) Zvezdara". Asteroid Lightcurve Database (LCDB). Retrieved 18 December 2016.
    4. Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 18 December 2016.
    5. 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. Retrieved 17 October 2019. (online, AcuA catalog p. 153)
    6. Baker, Ronald E.; Benishek, Vladimir; Pilcher, Frederick; Higgins, David (July 2010). "Rotation Period and H-G Parameters Determination for 1700 Zvezdara: A Collaborative Photometry Project". The Minor Planet Bulletin. 37 (3): 81–83. Bibcode:2010MPBu...37...81B. ISSN 1052-8091. Retrieved 18 December 2016.
    7. 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. Retrieved 18 December 2016.
    8. 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.
    9. "1700 Zvezdara (1940 QC)". Minor Planet Center. Retrieved 18 December 2016.
    10. Warner, Brian D.; Harris, Alan W.; Pravec, Petr; Durech, Josef; Benner, Lance A. M. (July 2009). "Lightcurve Photometry Opportunities: 2009 July-September". The Minor Planet Bulletin. 36 (3): 128–131. Bibcode:2009MPBu...36..128W. ISSN 1052-8091. Retrieved 8 November 2015.
    11. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 18 December 2016.

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