1161 Thessalia

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1161 Thessalia
Discovery [1]
Discovered by K. Reinmuth
Discovery site Heidelberg Obs.
Discovery date29 September 1929
Designations
(1161) Thessalia
Pronunciation /θɪˈsliə/ [2]
Named after
Thessaly (Greek region) [3]
1929 SF ·1931 BB
main-belt  ·(outer)
background [4]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 87.76 yr (32,056 days)
Aphelion 3.4488 AU
Perihelion 2.8975 AU
3.1732 AU
Eccentricity 0.0869
5.65 yr (2,065 days)
213.02°
0° 10m 27.84s / day
Inclination 9.3913°
72.567°
309.20°
Physical characteristics
Dimensions21.498±0.184 km [5]
0.065±0.010 [6]
11.2 [1]

    1161 Thessalia, provisional designation 1929 SF, is a dark background asteroid from the outer regions of the asteroid belt, approximately 21 kilometers in diameter. It was discovered on 29 September 1929, by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory. [7] It was named for the Greek region Thessaly. [3]

    Contents

    Orbit and classification

    Thessalia is a non-family asteroid from the main belt's background population. [4] It orbits the Sun in the outer main-belt at a distance of 2.9–3.4  AU once every 5 years and 8 months (2,065 days). Its orbit has an eccentricity of 0.09 and an inclination of 9° with respect to the ecliptic. [1] The body's observation arc begins at Heidelberg, five weeks after its official discovery observation. [7]

    Physical characteristics

    Diameter and albedo

    According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Thessalia measures 21.498 kilometers in diameter and its surface has an albedo of 0.065. [5] [6]

    Lightcurves

    As of 2017, no rotational lightcurve of Thessalia has been obtained from photometric observations. The asteroid's rotation period, poles and shape remain unknown. [8]

    Naming

    This minor planet was named for the Thessaly region in eastern Greece. The subsequently numbered minor planet 1162 Larissa was named after the region's capital. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 ( H 108 ). [3]

    Related Research Articles

    2159 Kukkamäki, provisional designation 1941 UX, is a stony asteroid from the inner region of the asteroid belt, approximately 11 kilometers in diameter. It was discovered on 16 October 1941, by Finnish astronomer Liisi Oterma at Turku Observatory in Southwest Finland. It was later named after Finnish geodesist Tauno Kukkamäki.

    <span class="mw-page-title-main">1130 Skuld</span> Florian asteroid

    1130 Skuld, provisional designation 1929 RC, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. It was named after Skuld from Norse mythology.

    La Paz, provisional designation 1923 PD, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 40 kilometers in diameter. It was discovered on 31 October 1923, by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory and named after the city La Paz in Bolivia.

    1106 Cydonia, provisional designation 1929 CW, is a Eunomian asteroid from the central regions of the asteroid belt, approximately 13 kilometers in diameter. It was discovered on 5 February 1929, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in Germany. The asteroid was named for the fruit-bearing tree Cydonia (quince). The S-type asteroid has a relatively short rotation period of 2.7 hours.

    <span class="mw-page-title-main">1132 Hollandia</span> Asteroid

    1132 Hollandia, provisional designation 1929 RB1, is a stony asteroid from the middle region of the asteroid belt, approximately 27 kilometers in diameter. It was discovered on 13 September 1929, by Dutch astronomer Hendrik van Gent at Leiden Southern Station, annex to the Johannesburg Observatory in South Africa. It was named for the region Holland in the Netherlands.

    <span class="mw-page-title-main">1147 Stavropolis</span> Stony background asteroid

    1147 Stavropolis is a stony background asteroid from the inner regions of the asteroid belt. It was discovered on 11 June 1929, by Georgian–Russian astronomer Grigory Neujmin at the Simeiz Observatory on the Crimean peninsula. The S-type asteroid has a rotation period of 5.7 hours and measures approximately 14 kilometers in diameter. It was named after the Russian city of Stavropol.

    <span class="mw-page-title-main">1160 Illyria</span>

    1160 Illyria, provisional designation 1929 RL, is a stony Maria asteroid from the central regions of the asteroid belt, approximately 13 kilometers in diameter. It was discovered on 9 September 1929, by German astronomer Karl Reinmuth at the Heidelberg Observatory in southwest Germany. The asteroid was named after the ancient region of Illyria, located on the Balkan Peninsula.

    <span class="mw-page-title-main">1652 Hergé</span>

    1652 Hergé, provisional designation 1953 PA, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 9 kilometers in diameter. It was discovered on 9 August 1953, by Belgian astronomer Sylvain Arend at the Royal Observatory of Belgium in Uccle, Belgium. It was later named after Belgian cartoonist Hergé.

    <span class="mw-page-title-main">1457 Ankara</span> Stony asteroid from the central region of the asteroid belt

    1457 Ankara, provisional designation 1937 PA, is a stony asteroid from the central region of the asteroid belt, approximately 18 kilometers in diameter. It was discovered on 3 August 1937, by German astronomer Karl Reinmuth at Heidelberg Observatory in southwest Germany, and later named for the Turkish capital city of Ankara.

    1354 Botha, provisional designation 1935 GK, is an exceptionally dark background asteroid from the outer regions of the asteroid belt, approximately 46 kilometers in diameter. It was discovered on 3 April 1935, by South-African astronomer Cyril Jackson at the Union Observatory in Johannesburg. The asteroid was named after South African prime minister Louis Botha.

    1541 Estonia, provisional designation 1939 CK, is an asteroid from the central regions of the asteroid belt, approximately 21 kilometers in diameter. It was discovered on 12 February 1939, by astronomer Yrjö Väisälä at the Iso-Heikkilä Observatory near Turku, Finland. The asteroid was named after the Baltic country of Estonia.

    1569 Evita, provisional designation 1948 PA, is a dark background asteroid from the outer regions of the asteroid belt, approximately 36 kilometers in diameter. It was discovered on 3 August 1948, by astronomer Miguel Itzigsohn at the La Plata Astronomical Observatory in Argentina. The asteroid was named after Eva Perón.

    2016 Heinemann, provisional designation 1938 SE, is a carbonaceous Themistian asteroid from the outer regions of the asteroid belt, approximately 22 kilometers in diameter. It was discovered on 18 September 1938, by German astronomer Alfred Bohrmann at Heidelberg Observatory in southwest Germany, and later named after ARI-astronomer Karl Heinemann (1898–1970).

    1522 Kokkola, provisional designation 1938 WO, is a stony Vestian asteroid from the inner regions of the asteroid belt, approximately 9.5 kilometers in diameter. It was discovered on 18 November 1938, by pioneering Finnish astronomer Liisi Oterma at Turku Observatory in Southwest Finland. It was later named for the town of Kokkola.

    1303 Luthera, provisional designation 1928 FP, is a dark asteroid and the parent body of the Luthera family, located in the outermost regions of the asteroid belt. It measures approximately 90 kilometers in diameter. The asteroid was discovered on 16 March 1928, by astronomer Friedrich Schwassmann at the Bergedorf Observatory in Hamburg, Germany, and later named after German astronomer Robert Luther.

    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.

    1907 Rudneva, provisional designation 1972 RC2, is a stony background asteroid from the central regions of the asteroid belt, approximately 11 kilometers in diameter. It was discovered on 11 September 1972, by astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory, Nauchnyj, on the Crimean peninsula. The asteroid was named after Soviet geodesist and war hero Yevgeniya Rudneva.

    2391 Tomita, provisional designation 1957 AA, is a Nysian asteroid from the inner regions of the asteroid belt, approximately 15 kilometers in diameter. The asteroid was discovered on 9 January 1957, by German astronomer Karl Reinmuth at Heidelberg Observatory in southern Germany. It was named after Japanese astronomer Kōichirō Tomita.

    1466 Mündleria, provisional designation 1938 KA, is a carbonaceous asteroid from the inner regions of the asteroid belt, approximately 22 kilometers in diameter.

    1544 Vinterhansenia, provisional designation 1941 UK, is a dark asteroid from the inner regions of the asteroid belt, approximately 22 kilometers in diameter. It was discovered on 15 October 1941, by Finnish astronomer Liisi Oterma at Turku Observatory in Southwest Finland, and named for Danish astronomer Julie Vinter Hansen.

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 1161 Thessalia (1929 SF)" (2017-07-05 last obs.). Jet Propulsion Laboratory . Retrieved 7 September 2017.
    2. "Thessalian" . Oxford English Dictionary (Online ed.). Oxford University Press.(Subscription or participating institution membership required.)
    3. 1 2 3 Schmadel, Lutz D. (2007). "(1161) Thessalia". Dictionary of Minor Planet Names – (1161) Thessalia. Springer Berlin Heidelberg. p. 98. doi:10.1007/978-3-540-29925-7_1162. ISBN   978-3-540-00238-3.
    4. 1 2 "Asteroid 1161 Thessalia – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 28 October 2019.
    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 7 September 2017.
    6. 1 2 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 7 September 2017.
    7. 1 2 "1161 Thessalia (1929 SF)". Minor Planet Center. Retrieved 7 September 2017.
    8. "LCDB Data for (1161) Thessalia". Asteroid Lightcurve Database (LCDB). Retrieved 7 September 2017.