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1235 Schorria
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Hungaria asteroid
June 2020
yes
1235 Schorria
#FA8072
Орбита астероида 1235.png
Orbit of 1235 Schorria relative to the inner planets and Jupiter
Diagram showing the orbit of 1235 Schorria, which is slightly outside the orbit of Mars. It is angled at about 30 degrees relative to the plane of the Solar System. The diagram states that on September 18, 2014, the asteroid was 3.071 astronomical units from the Earth and 2.11 astronomical units from the Sun.
K. Reinmuth
Heidelberg Obs.
18 October 1931
(1235) Schorria
1931 UJ1988 HD
' ʃ ɒr i ə
Richard Schorr(1867–1951)(German astronomer)
Mars-crosserHungaria
31 May 2020 (JD 2459000.5)
0
88.52 yr (32,333 d)
2.2056 AU
1.6147 AU
1.9102 AU
0.1547
2.64 yr (964 d)
183.19°
0.3733 ms / day
24.998°
12.947°
43.732°
0.6612 AU (257.6 LD)
5.55 1.11 km 9 km (estimate)11 4 (generic)
1265 25 hlightcurve-plot
0.40 (assumed)0.486 0.194
Tholen CX:
B–V 0.750
U–B 0.330
12.6813.10
1235 Schorria (prov. designation: 1931 UJ), is a Hungaria asteroid, sizable Mars-crosser, and exceptionally slow rotator from the inner region of the asteroid belt. The carbonaceous C-type asteroid has an outstandingly long rotation period of 1265 hours (7.5 weeks) and measures approximately 5.5 km mi off 2 us kilometers in diameter. It was discovered by Karl Reinmuth at Heidelberg Observatory in southwest Germany on 18 October 1931, and named after German astronomer Richard Schorr (1867–1951).
Orbit and classification
Schorria is a Mars-crossing member of the Hungaria asteroids, which form the innermost dense concentration of asteroids in the Solar System. It orbits the Sun in the inner main-belt at a distance of 1.6–2.2 AU once every 2 years and 8 months (964 days; semi-major axis of 1.91 AU). Its orbit has an eccentricity of 0.15 and an inclination of 25° with respect to the ecliptic. The body's observation arc begins at Heidelberg two weeks after its official discovery observation, as no precoveries were taken, and no prior identifications were made.
Naming
This minor planet was named after Richard Schorr (1867–1951), a German astronomer at Bergedorf Observatory, Hamburg, who discovered the minor planets 869 Mellena and 1240 Centenaria. After being named by ARI with the consent of the discoverer (RI 862), naming citation was later published by Paul Herget in The Names of the Minor Planets in 1955 (H 114). The lunar crater Schorr is also named in the astronomer's honour. In 1913, asteroid 725 Amanda was already named after Schorr's wife by discovering astronomer Johann Palisa.
Physical characteristics
In the Tholen taxonomy, Schorria spectral type is closest to that of a carbonaceous C-type and somewhat similar to that of an X-type asteroid though with a noisy spectrum (CX:).
Slow rotator
In March 2009, a rotational lightcurvelightcurve-plot of Schorria was obtained from photometric observations by American astronomers Brian Warner and Robert Stephens. Light curve analysis of the two astronomer's combined data set of almost 2000 photometric observations revealed that this Mars-crosser is one of the slowest rotating asteroids known to exist. It has a rotation period of 1265 80 hours, or about 52 days, with a high brightness variation of 1.40 in magnitude (U=3), which is indicative of a non-spheroidal shape. The body was also suspected to be in a tumbling state. However, no significant evidence of such a non-principal axis rotation could be found.
Diameter and albedo
According to the space-based survey by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Schorria measures (5.55 1.11) kilometers in diameter and its surface has an albedo of (0.486 0.194). Based on a generic magnitude-to-diameter conversion, the body measures between 7 and 15 kilometers, for an absolute magnitude at 13 and an albedo in the range of 0.05 to 0.25, while Warner/Stephens estimated a diameter of approximately 9 kilometers in 2009.103
The Collaborative Asteroid Lightcurve Link calculates a diameter of 5.04 kilometers based on an albedo of 0.40, which is contrary to an expected low albedo for dark, carbonaceous CX-type asteroids as classified by Tholen, but typical for the descendants of the E-belt, a hypothesized population of primordial asteroids, which the E-type Hungarian asteroids with high inclinations and a semi-major axis of 1.9 AU are thought to have originated from.
Notes
lightcurve-plot Lightcurve plot of (1235) SchorriaNovember 2025 medicmedic, Palmer Divide Observatory, B. D. Warner (2009)
References
30em 2017-07-01 last obs.
JPL Small-Body Database Browser: 1235 Schorria (1931 UJ)
https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001235
Jet Propulsion Laboratory
26 July 2017
Dictionary of Minor Planet Names
Schmadel Lutz D.
Springer Berlin Heidelberg
(1235) Schorria
103
2007
978-3-540-00238-3
10.1007/978-3-540-29925-7_1236
Dictionary of Minor Planet Names
Schmadel Lutz D.
Springer Berlin Heidelberg
(725) Amanda
70
2007
10.1007/978-3-540-29925-7_726
978-3-540-00238-3
1235 Schorria (1931 UJ)
Minor Planet Center
https://www.minorplanetcenter.net/db_search/show_object?object_id=1235
25 January 2017
Asteroid Size Estimator
CNEOS NASA/JPL
https://cneos.jpl.nasa.gov/tools/ast_size_est.html
15 June 2020
1235
25 January 2017
Brian D. Warner
Robert D. Stephens
July 2009
The Lightcurve for the Long-Period Hungaria Asteroid 1235 Schorria
http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2009MPBu...36..102W
The Minor Planet Bulletin
36
3
102–103
1052-8091
2009MPBu...36..102W
25 January 2017
W. Z. Wisniewski
T. M. Michalowski
A. W. Harris
R. S. McMillan
March 1995
Photoelectric Observations of 125 Asteroids
http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1995LPI....26.1511W
Abstracts of the Lunar and Planetary Science Conference
26
1511
1995LPI....26.1511W
25 January 2017
Petr Pravec
Alan W. Harris
Peter Kusnirák
Adrián Galád
Kamil Hornoch
September 2012
Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations
http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012Icar..221..365P
Icarus
221
1
365–387
2012Icar..221..365P
10.1016/j.icarus.2012.07.026
25 January 2017
V. Alí-Lagoa
M. Delbo'
July 2017
Sizes and albedos of Mars-crossing asteroids from WISE/NEOWISE data
https://www.aanda.org/articles/aa/pdf/2017/07/aa29917-16.pdf
Astronomy and Astrophysics
603
8
2017A&A...603A..55A
10.1051/0004-6361/201629917
1705.10263
20 October 2017
External links
Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html 16 December 2017 )
Dictionary of Minor Planet Names, Google books
(1235) Schorria – Asteroids and comets rotation curves, CdR https://web.archive.org/web/20190423121547/http://obswww.unige.ch/~behrend/page3cou.html#001235 23 April 2019 – Geneva Observatory, Raoul Behrend
Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
1235
1234 Elyna 1235 1236 Thaïs
001235
001235
Category:Discoveries by Karl Wilhelm Reinmuth
Category:Named minor planets
001235
001235
19311018