1220 Crocus

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1220 Crocus
001220-asteroid shape model (1220) Crocus.png
Shape model of Crocus from its lightcurve
Discovery [1]
Discovered by K. Reinmuth
Discovery site Heidelberg Obs.
Discovery date11 February 1932
Designations
(1220) Crocus
Pronunciation /ˈkroʊkəs/ [2]
Named after
 Crocus [3]
1932 CU ·1955 PC
main-belt  · Eos [4]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 85.31 yr (31,161 days)
Aphelion 3.2243 AU
Perihelion 2.7807 AU
3.0025 AU
Eccentricity 0.0739
5.20 yr (1,900 days)
204.16°
0° 11m 21.84s / day
Inclination 11.365°
113.34°
333.41°
Physical characteristics
Dimensions17.866±0.175 [5]
491.4±0.1 [6]
0.114±0.020 [5]
S [4]
11.72 [1]

    1220 Crocus, provisionally designated 1932 CU, is a stony Eoan asteroid and slow rotator from the outer regions of the asteroid belt, approximately 17 kilometers in diameter. It was discovered on 11 February 1932, by German astronomer Karl Reinmuth at Heidelberg Observatory in southwest Germany. [7]

    Contents

    Orbit and classification

    Crocus is a member of the Eos family, a collisional population of mostly stony composition. It orbits the Sun at a distance of 2.8–3.2  AU once every 5 years and 2 months (1,900 days). Its orbit has an eccentricity of 0.07 and an inclination of 11° with respect to the ecliptic. [1] A

    Physical characteristics

    The asteroid has been characterized as a stony S-type asteroid. [4]

    In December 2014, a rotational lightcurve of Crocus was obtained from photometric observations by an international collaboration of several astronomers from Europe and the United States. Lightcurve analysis gave a long rotation period of 491 hours with a brightness variation of 1.00 magnitude ( U=3 ). [6]

    Naming

    This minor planet was later named after the genus of flowering plants, Crocus, in the iris family. [3]

    Related Research Articles

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    <span class="mw-page-title-main">1457 Ankara</span>

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    <span class="mw-page-title-main">1218 Aster</span>

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    1215 Boyer, provisional designation 1932 BA, is a stony Eunomian asteroid from the central region of the asteroid belt, approximately 20 kilometers in diameter. It was discovered by astronomer Alfred Schmitt in 1932, who named it after French astronomer and college Louis Boyer.

    <span class="mw-page-title-main">1274 Delportia</span>

    1274 Delportia, provisional designation 1932 WC, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 28 November 1932, by Belgian astronomer Eugène Delporte at Uccle Observatory in Belgium. It was named after the discoverer himself.

    3905 Doppler, provisional designation 1984 QO, is a stony asteroid and binary system from the middle region of the asteroid belt, approximately 8 kilometers in diameter.

    1739 Meyermann, provisional designation 1939 PF, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 7.5 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at Heidelberg Observatory on 15 August 1939. It was later named in memory of astronomer Bruno Meyermann.

    2056 Nancy, provisional designation A909 TB, is a stony background asteroid from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 15 October 1909, by German astronomer Joseph Helffrich at Heidelberg Observatory in southwest Germany. The S-type asteroid has a tentative rotation period of 15.0 hours. It was named for Nancy Marsden, wife of British astronomer Brian G. Marsden.

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    <span class="mw-page-title-main">1854 Skvortsov</span> Asteroid

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    1807 Slovakia, provisional designation 1971 QA, is a stony asteroid and slow rotator from the inner regions of the asteroid belt, approximately 9 kilometers in diameter. It was discovered on 20 August 1971, by Slovak astronomer Milan Antal at Skalnaté pleso Observatory in the High Tatras mountains of Slovakia and named after the Slovak Republic.

    <span class="mw-page-title-main">1704 Wachmann</span>

    1704 Wachmann, provisional designation A924 EE, is a stony asteroid from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at Heidelberg Observatory on 7 March 1924. It was later named after astronomer Arno Wachmann.

    1530 Rantaseppä, provisional designation 1938 SG, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. Discovered by Yrjö Väisälä at Turku Observatory in 1938, it was later named after Finnish astronomer Hilkka Rantaseppä-Helenius.

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 1220 Crocus (1932 CU)" (2017-06-05 last obs.). Jet Propulsion Laboratory. Archived from the original on 18 September 2020. Retrieved 15 June 2017.
    2. ↑ "crocus" . Oxford English Dictionary (Online ed.). Oxford University Press.(Subscription or participating institution membership required.)
    3. 1 2 Schmadel, Lutz D. (2007). "(1220) Crocus". Dictionary of Minor Planet Names – (1220) Crocus. Springer Berlin Heidelberg. p. 102. doi:10.1007/978-3-540-29925-7_1221. ISBN   978-3-540-00238-3.
    4. 1 2 3 "LCDB Data for (1220) Crocus". Asteroid Lightcurve Database (LCDB). Retrieved 15 June 2017.
    5. 1 2 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 . Retrieved 15 June 2017.
    6. 1 2 Pilcher, Frederick; Benishek, Vladimir; Franco, Lorenzo; Harris, A. W.; Klinglesmith, Daniel A. III; Hanowell, Jesse; et al. (July 2015). "Rotation Period Determination for 1220 Crocus". The Minor Planet Bulletin. 42 (3): 155–157. Bibcode:2015MPBu...42..155P. ISSN   1052-8091 . Retrieved 15 June 2017.
    7. ↑ "1220 Crocus (1932 CU)". Minor Planet Center. Retrieved 15 June 2017.
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