1911 Schubart

Last updated

1911 Schubart
Discovery [1]
Discovered by P. Wild
Discovery site Zimmerwald Obs.
Discovery date25 October 1973
Designations
(1911) Schubart
Named after
 Joachim Schubart
(German astronomer) [2]
1973 UD ·1928 DW
1933 UX1 ·1941 SU1
1951 AH1 ·1952 DS2
1960 EF ·1968 FM
1972 RO ·1972 TY4
main-belt  ·(outer) [1]
Hilda  · Schubart [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 89.27 yr (32,606 days)
Aphelion 4.6512 AU
Perihelion 3.3013 AU
3.9762 AU
Eccentricity 0.1697
7.93 yr (2,896 days)
136.84°
0° 7m 27.48s / day
Inclination 1.6431°
284.84°
181.75°
Jupiter  MOID 0.5059 AU
TJupiter 3.0310
Physical characteristics
Dimensions64.66±23.84 km [4]
67.476±0.504 km [5]
80.09±2.0 km [6]
80.11 km (derived) [7]
80.13±1.25 km [8]
7.91±0.02 h [9]
11.915±0.002 h [10]
0.0249±0.001 [6]
0.025±0.001 [8]
0.0316 (derived) [7]
0.035±0.001 [5]
0.04±0.01 [5]
0.04±0.03 [4]
Tholen = P [1] [7]  · C/P [5]
B–V = 0.701 [1]
U–B = 0.217 [1]
9.85 [7] [11]  ·10.11 [1] [4] [6] [8]

    1911 Schubart, provisional designation 1973 UD, is a dark Hildian asteroid and parent body of the Schubart family, located in the outermost region of the asteroid belt, approximately 70 kilometers in diameter. It was discovered on 25 October 1973, by Swiss astronomer Paul Wild at Zimmerwald Observatory, near Bern, Switzerland. [12] The asteroid was named after German astronomer Joachim Schubart. [2]

    Contents

    Orbit and classification

    With an diameter of 65–80 kilometers, it is one of the largest members of the Hilda group of asteroids, which are in 3:2 orbital resonance with the gas-giant Jupiter. More specifically, it is the parent body and namesake of the Schubart family ( 002 ), [3] one of two asteroid families within the Hilda group (the other one is the Hilda family itself). [13] [14] : 23  It is the darkest P-type asteroid with a very low geometric albedo of 0.0249. [1]

    The body's observation arc begins with its first identification as 1928 DW at Heidelberg Observatory in February 1928, more than 45 years prior to its official discovery observation at Zimmerwald . [12]

    Physical characteristics

    In the Tholen classification, Schubart is a primitive P-type asteroid. [1] [7] The Wide-field Infrared Survey Explorer (WISE) characterized it as both P- and C-type asteroid. [5]

    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 WISE telescope, Schubart measures between 64.66 and 80.13 kilometers in diameter and its surface has an albedo between 0.0249 and 0.04. [4] [5] [6] [8]

    The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0316 and a diameter of 80.11 kilometers based on an absolute magnitude of 9.85. [7]

    Rotation period

    Two rotational lightcurves of Schubart were obtained from photometric observations by Johan Warell and Robert Stephens in 2015 and 2016, respectively. Lightcurve analysis gave a rotation period of 7.91 and 11.915 hours with a brightness amplitude of 0.11 and 0.22 in magnitude, respectively ( U=2/2 ). [9] [10]

    Naming

    The minor planet is named in after German ARI-astronomer Joachim Schubart (born 1928), who is also a discoverer of minor planets, namely 2000 Herschel and 4724 Brocken. He studied in detail members of the Hilda family, as he developed an averaging techniques for observing the long-term motions of asteroids. [2] Schubart has also been an active member on several commissions of the International Astronomical Union. [15] The official naming citation was published by the Minor Planet Center on 20 February 1976 ( M.P.C. 3937). [16]

    Related Research Articles

    641 Agnes, provisional designation 1907 ZX, is a stony Florian asteroid and slow rotator from the inner regions of the asteroid belt, approximately 9 kilometers (6 mi) in diameter.

    <span class="mw-page-title-main">958 Asplinda</span> Hilda asteroid

    958 Asplinda is a resonant Hilda asteroid, approximately 47 kilometers in diameter, located in the outermost region of the asteroid belt. It was discovered on 28 September 1921, by astronomer Karl Reinmuth at the Heidelberg Observatory in southwest Germany. The assumed C-type asteroid has a rotation period of 16.5 hours and is likely elongated in shape. It was named after Swedish astronomer Bror Asplind (1890–1954).

    1178 Irmela, provisional designation 1931 EC, is a stony asteroid from the middle regions of the asteroid belt, approximately 19 kilometers in diameter.

    1062 Ljuba, provisional designation 1925 TD, is a carbonaceous background asteroid from the outer regions of the asteroid belt, approximately 58 kilometers in diameter. The asteroid was discovered on 11 October 1925, by Soviet–Russian astronomer Sergey Belyavsky at the Simeiz Observatory on the Crimean peninsula. It was named after female paratrooper Ljuba Berlin, who died at an early age. The C-type asteroid has a longer-than average rotation period of 33.8 hours.

    1096 Reunerta, provisional designation 1928 OB, is an asteroid from the background population of the asteroid belt's central region, approximately 40 kilometers in diameter. It was discovered on 21 July 1928, by astronomer Harry Edwin Wood at the Union Observatory in Johannesburg, South Africa. The asteroid was named after South African engineer Theodore Reunert, supporter of the observatory and friend of the discoverer.

    <span class="mw-page-title-main">1165 Imprinetta</span> Carbonaceous Meliboean asteroid

    1165 Imprinetta, provisional designation 1930 HM, is a carbonaceous Meliboean asteroid from the outer regions of the asteroid belt, approximately 49 kilometers (30 mi) in diameter. It was discovered on 24 April 1930 by Dutch astronomer Hendrik van Gent at the Union Observatory in Johannesburg, South Africa. The asteroid was named after Imprinetta Gent, wife of the discoverer.

    2067 Aksnes, provisional designation 1936 DD, is a rare-type Hildian asteroid from the outermost region of the asteroid belt, approximately 44 kilometers in diameter. The asteroid was discovered on 23 February 1936, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland. It was named after astronomer Kaare Aksnes.

    2038 Bistro, provisional designation 1973 WF, is a stony asteroid from the inner regions of the asteroid belt, approximately 12 kilometers in diameter. The asteroid was discovered on 24 November 1973, by Swiss astronomer Paul Wild at the Zimmerwald Observatory near Bern, Switzerland. It was named for the Bistro restaurant.

    2246 Bowell, provisional designation 1979 XH, is a rare-type Hildian asteroid from the outermost region of the asteroid belt, approximately 44 kilometers in diameter. It was discovered on 14 December 1979, by American astronomer Edward Bowell at Lowell Observatory's Anderson Mesa Station, and named after the discoverer himself.

    9298 Geake, provisional designation 1985 JM, is a Mitidika asteroid from the central regions of the asteroid belt, approximately 12 kilometers in diameter. It was discovered on 15 May 1985, by American astronomer Edward Bowell at Lowell Observatory's Anderson Mesa Station near Flagstaff, Arizona, United States. The asteroid was named for British astronomer John E. Geake.

    <span class="mw-page-title-main">1182 Ilona</span> Stony asteroid

    1182 Ilona, provisional designation 1927 EA, is a stony asteroid from the inner regions of the asteroid belt, approximately 14 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at the Heidelberg Observatory on 3 March 1927, and later named Ilona. Any reference to its name is unknown.

    1877 Marsden, provisional designation 1971 FC, is a carbonaceous Hildian asteroid from the outermost region of the asteroid belt, approximately 35 kilometers in diameter. It was discovered during the Palomar–Leiden Trojan survey in 1971, and named after British astronomer Brian Marsden.

    <span class="mw-page-title-main">1256 Normannia</span> Hilda asteroid and slow rotator

    1256 Normannia is a dark Hilda asteroid and slow rotator from the outermost regions of the asteroid belt, approximately 69 kilometers in diameter. It was discovered on 8 August 1932, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in Germany. The asteroid was likely named after the Normans who gave their name to the region of Normandy in France.

    2959 Scholl, provisional designation 1983 RE2, is a carbonaceous Hildian asteroid from the outer regions of the asteroid belt, approximately 34 kilometers in diameter. It was discovered on 4 September 1983 by English–American astronomer Edward Bowell of the Lowell Observatory at Anderson Mesa Station near Flagstaff, Arizona. The asteroid was named after German astronomer Hans Scholl.

    <span class="mw-page-title-main">1902 Shaposhnikov</span> Hilda asteroid

    1902 Shaposhnikov is a dark Hilda asteroid from the outermost region of the asteroid belt, approximately 92 kilometers in diameter. It was discovered on 18 April 1972, by Russian astronomer Tamara Smirnova at the Crimean Astrophysical Observatory in Nauchnyj, on the Crimean peninsula. The asteroid was named after Soviet astronomer and WWII casualty Vladimir Shaposhnikov. It was one of the last larger asteroids discovered in the main belt.

    1258 Sicilia, provisional designation 1932 PG, is a dark background asteroid from the outer regions of the asteroid belt, approximately 44 kilometers in diameter. It was discovered on 8 August 1932, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany. The asteroid was named after the Italian island of Sicily.

    1266 Tone is a dark background asteroid from the outer regions of the asteroid belt, approximately 80 kilometers in diameter. Discovered by astronomer Okuro Oikawa at the Tokyo Observatory in 1927, it was assigned the provisional designation 1927 BD. The asteroid was later named after the Tone River, one of Japan's largest rivers.

    <span class="mw-page-title-main">4230 van den Bergh</span> Hildian asteroid

    4230 van den Bergh (prov. designation: 1973 ST1) is a highly elongated Hildian asteroid and member of the Schubart family from the outer regions of the asteroid belt. It was discovered on 19 September 1973, by Dutch astronomer couple Ingrid and Cornelis van Houten at Leiden Observatory, on photographic plates taken by Dutch–American astronomer Tom Gehrels at the Palomar Observatory, California. The assumed carbonaceous C-type asteroid has a very long rotation period of 88 hours and measures approximately 37 kilometers (23 miles) in diameter. It was named for Dutch–Canadian astronomer Sidney Van den Bergh.

    1941 Wild, provisional designation 1931 TN1, is an eccentric Hildian asteroid from the outermost region of the asteroid belt, approximately 20 kilometers in diameter.

    5176 Yoichi, provisional designation 1989 AU, is a background asteroid from the central regions of the asteroid belt, approximately 17 kilometers in diameter. It was discovered on 4 January 1989, by Japanese astronomers Seiji Ueda and Hiroshi Kaneda at the Kushiro Observatory on Hokkaido, Japan. The likely elongated asteroid has a brightness variation of 0.45 magnitude, and occulted a star in the constellation Cetus in November 2014. It was named for the Japanese town of Yoichi.

    References

    1. 1 2 3 4 5 6 7 8 9 "JPL Small-Body Database Browser: 1911 Schubart (1973 UD)" (2017-07-04 last obs.). Jet Propulsion Laboratory . Retrieved 3 December 2017.
    2. 1 2 3 Schmadel, Lutz D. (2007). "(1911) Schubart". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 153. doi:10.1007/978-3-540-29925-7_1912. ISBN   978-3-540-00238-3.
    3. 1 2 "Asteroid 1911 Schubart". Small Bodies Data Ferret. Retrieved 21 October 2019.
    4. 1 2 3 4 Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T.; et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos". The Astrophysical Journal. 814 (2): 13. arXiv: 1509.02522 . Bibcode:2015ApJ...814..117N. doi:10.1088/0004-637X/814/2/117. S2CID   9341381 . Retrieved 3 December 2017.
    5. 1 2 3 4 5 6 Grav, T.; Mainzer, A. K.; Bauer, J.; Masiero, J.; Spahr, T.; McMillan, R. S.; et al. (January 2012). "WISE/NEOWISE Observations of the Hilda Population: Preliminary Results". The Astrophysical Journal. 744 (2): 15. arXiv: 1110.0283 . Bibcode:2012ApJ...744..197G. doi:10.1088/0004-637X/744/2/197. S2CID   44000310 . Retrieved 3 December 2017.
    6. 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 – IRAS-A-FPA-3-RDR-IMPS-V6.0. 12. Bibcode:2004PDSS...12.....T . Retrieved 17 October 2019.
    7. 1 2 3 4 5 6 "LCDB Data for (1911) Schubart". Asteroid Lightcurve Database (LCDB). Retrieved 3 December 2017.
    8. 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)
    9. 1 2 Warell, Johan (October 2017). "Lightcurve Observations of Nine Main-belt Asteroids". The Minor Planet Bulletin. 44 (4): 304–305. Bibcode:2017MPBu...44..304W. ISSN   1052-8091 . Retrieved 3 December 2017.
    10. 1 2 Stephens, Robert D. (October 2016). "Asteroids Observed from CS3: 2016 April - June". The Minor Planet Bulletin. 43 (4): 336–339. Bibcode:2016MPBu...43..336S. ISSN   1052-8091. PMC   7243975 . PMID   32455386.
    11. ↑ Dahlgren, M.; Lahulla, J. F.; Lagerkvist, C.-I.; Lagerros, J.; Mottola, S.; Erikson, A.; et al. (June 1998). "A Study of Hilda Asteroids. V. Lightcurves of 47 Hilda Asteroids". Icarus. 133 (2): 247–285. Bibcode:1998Icar..133..247D. doi:10.1006/icar.1998.5919 . Retrieved 3 December 2017.
    12. 1 2 "1911 Schubart (1973 UD)". Minor Planet Center. Retrieved 3 December 2017.
    13. ↑ Brož, M.; Vokrouhlický, D. (October 2008), "Asteroid families in the first-order resonances with Jupiter", Monthly Notices of the Royal Astronomical Society, 390 (2): 715–732, arXiv: 1104.4004 , Bibcode:2008MNRAS.390..715B, doi: 10.1111/j.1365-2966.2008.13764.x , S2CID   53965791
    14. ↑ Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. arXiv: 1502.01628 . Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN   9780816532131. S2CID   119280014.
    15. ↑ "Individual members: Joachim Schubart". IAU – International Astronomical Union. Retrieved 5 December 2017.
    16. ↑ Schmadel, Lutz D. (2009). "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) . Springer Berlin Heidelberg. p.  221. Bibcode:2009dmpn.book.....S. doi:10.1007/978-3-642-01965-4. ISBN   978-3-642-01964-7.
    This page is based on this Wikipedia article
    Text is available under the CC BY-SA 4.0 license; additional terms may apply.
    Images, videos and audio are available under their respective licenses.