932 Hooveria

Last updated

932 Hooveria
Discovery  [1]
Discovered by J. Palisa
Discovery site Vienna Obs.
Discovery date23 March 1920
Designations
(932) Hooveria
Named after
 Herbert Hoover
(U.S. Secretary of Commerce) [2]
A920 FC ·1920 GV
A909 GG ·1909 GG
A912 BD ·1912 BD
A913 MD ·1913 MD
A914 TF ·1914 TF
1950 HQ
main-belt   [1] [3]  ·(inner)
background   [4] [5]
Orbital characteristics   [3]
Epoch 31 May 2020 (JD 2459000.5)
Uncertainty parameter 0
Observation arc 99.79 yr (36,448 d)
Aphelion 2.6386 AU
Perihelion 2.2002 AU
2.4194 AU
Eccentricity 0.0906
3.76 yr (1,375 d)
331.44°
0° 15m 42.84s / day
Inclination 8.1137°
14.956°
50.025°
Physical characteristics
Mean diameter
  • 58.978±0.804  km [6]
  • 60.20±0.71 km [7]
78.44±0.01  h [8] [9]
  • 0.049±0.001 [7]
  • 0.051±0.006 [6]

    932 Hooveria (prov. designation: A920 FCor1920 GV) is a dark background asteroid, approximately 59 kilometers (37 miles) in diameter, located in the inner region of the asteroid belt. It was discovered by Austrian astronomer Johann Palisa at the Vienna Observatory on 23 March 1920. [1] The carbonaceous C-type asteroid (Ch) has a long rotation period of 78.4 hours. It was named after then-Secretary of Commerce Herbert Hoover (1874–1964), who later became president of the United States. [2]

    Contents

    Orbit and classification

    Hooveria is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements. [4] [5] It orbits the Sun in the inner asteroid belt at a distance of 2.2–2.6  AU once every 3 years and 9 months (1,375 days; semi-major axis of 2.42 AU). Its orbit has an eccentricity of 0.09 and an inclination of 8° with respect to the ecliptic. [3] The asteroid was first observed as A909 GG (1909 GG) at Heidelberg Observatory on 16 April 1909. The body's observation arc begins with its official discovery observation at Vienna Observatory on 23 March 1920. [1]

    Naming

    This minor planet was named by the Academic Senate of the Vienna University in honor of then-Secretary of Commerce Herbert Hoover (1874–1964), in recognition of his help to Austria after World War I. The naming was mentioned in the Astronomische Nachrichten in 1922 (AN 216, 192). [2] Hoover became the 31st president of the United States from 1929 to 1933. A second asteroid 1363 Herberta was also named after him in 1938.

    Another of Palisa's discoveries, asteroid 941 Murray, was also named in appreciation for the help provided to post-war Austria. In this case, it was named after British classical scholar and diplomat Gilbert Murray (1866–1957).

    Physical characteristics

    In the Tholen classification, Hooveria is classified as a CB-asteroid, closest to a carbonaceous C-type and somewhat similar to a brighter B-type asteroid. [3] In the Small Solar System Objects Spectroscopic Survey (S3OS2), the asteroid is a Caa-type in the survey's Tholen-like taxonomy, and a hydrated Ch-subtype in the SMASS-like taxonomy of the S3OS2. [5] [10]

    Rotation period

    In December 2016, a rotational lightcurve of Hooveria was obtained from photometric observations by Anna Marciniak at the Poznań Observatory and other observers around the world during a survey, that collected spin and shape properties of long-period main-belt asteroids. Lightcurve analysis gave a well-defined rotation period of 78.44±0.01 hours with a brightness variation of 0.24±0.02 magnitude ( U=3 ). [8] The results supersede observations by Brian Warner at the Palmer Divide Observatory ( 716 ) and collaborators from February 2010, which gave a rotation period 39.1±0.1 hours (or half the period solution) with a brightness amplitude of 0.22±0.02 magnitude ( U=2+ ). [11] [lower-alpha 1]

    Diameter and albedo

    According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer (WISE) and the Japanese Akari satellite, Hooveria measures (58.978±0.804) and (60.20±0.71) kilometers in diameter and its surface has an albedo of (0.051±0.006) and (0.049±0.001), respectively. [6] [7] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.20 and calculates a diameter of 29.72 km based on an absolute magnitude of 10.00. [9]

    Further published mean-diameters and albedos by the WISE team include (59.101±21.01 km), (60.54±17.87 km), (61.70±21.32 km) and (62.973±1.412 km) with corresponding albedos of (0.0347±0.0290), (0.04±0.08), (0.03±0.02), and (0.0296±0.0039). [5] [9] An asteroid occultation on 1 February 2006, gave a best-fit ellipse dimension of 33.0 × 33.0 kilometers. [5] These timed observations are taken when the asteroid passes in front of a distant star. However the quality of the measurement is poorly rated. [5]

    Notes

    1. ↑ Lightcurve plot of (932) Hooveria, Palmer Divide Observatory, Brian Warner (2010). Rotation period 39.1±0.1 hours with a brightness amplitude of 0.22±0.02 mag. Quality code of 2+. Summary figures for (932) Hooveria at the LCDB

    Related Research Articles

    <span class="mw-page-title-main">220 Stephania</span> Dark background asteroid from the inner regions of the asteroid belt

    Stephania is a dark background asteroid from the inner regions of the asteroid belt, approximately 32 km (20 mi) in diameter. It was discovered on 19 May 1881, by Austrian astronomer Johann Palisa at the Vienna Observatory. The C-type asteroid has a rotation period of 18.2 hours. It was named after Princess Stéphanie of Belgium.

    716 Berkeley is a background asteroid from the central regions of the asteroid belt. It was discovered by Austrian astronomer Johann Palisa at the Vienna Observatory on 30 July 1911. The stony S-type asteroid has a rotation period of 15.6 hours and measures approximately 21 kilometers in diameter. It was named after the city of Berkeley, California, where the discoverer's colleague Armin Otto Leuschner (1868–1953) was the director of the local observatory.

    734 Benda is a large background asteroid from the outer regions of the asteroid belt, approximately 70 kilometers in diameter. It was discovered by Austrian astronomer Johann Palisa at the Vienna Observatory on 11 October 1912. For its size, the dark X-type asteroid has a relatively short rotation period of 7.1 hours. It was named after the discoverer's wife, Anna Benda.

    <span class="mw-page-title-main">834 Burnhamia</span>

    834 Burnhamia is a large background asteroid, approximately 61 kilometers in diameter, that is located in the outer region of the asteroid belt. It was discovered on 20 September 1916, by German astronomer Max Wolf at the Heidelberg Observatory in southwest Germany. The X-type asteroid (GS) has a rotation period of 13.9 hours. It was named after American astronomer Sherburne Wesley Burnham (1838–1921).

    <span class="mw-page-title-main">882 Swetlana</span>

    882 Swetlana is a dark background asteroid from the outer region of the asteroid belt. It was discovered on 15 August 1917, by Russian astronomer Grigory Neujmin at the Simeiz Observatory on the Crimean peninsula. The X-type asteroid has a longer-than average rotation period of 29.9 hours and measures approximately 42 kilometers in diameter. The origin of the asteroid's name remains unknown.

    <span class="mw-page-title-main">881 Athene</span>

    881 Athene is a stony background asteroid from the central region of the asteroid belt. It was discovered on 22 July 1917, by astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory in southwest Germany. The likely elongated S/L-type asteroid has a rotation period of 13.9 hours and measures approximately 12 kilometers in diameter. It was named after Athena, the goddess of wisdom in Greek mythology.

    <span class="mw-page-title-main">889 Erynia</span>

    889 Erynia is a highly elongated background asteroid from the inner regions of the asteroid belt. It was discovered on 5 March 1918, by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory, and given the provisional designations A918 EN and 1918 DG. The stony S-type asteroid (Sl) has a rotation period of 9.89 hours and measures approximately 17 kilometers in diameter. It was named from Greek mythology, after the Erinyes, also known as Furies.

    <span class="mw-page-title-main">891 Gunhild</span> Main-belt asteroid

    891 Gunhild is a large background asteroid from the outer regions of the asteroid belt, that measures approximately 58 kilometers in diameter. It was discovered on 17 May 1918, by astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory in southwest Germany. The dark D-type asteroid has a rotation period of 11.9 hours. Any reference of the asteroid's name to a person is unknown.

    921 Jovita is a dark background asteroid, approximately 58 kilometers in diameter, located in the outer regions of the asteroid belt. It was discovered on 4 September 1919, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany. The carbonaceous C-type asteroid (Ch) has a rotation period of 15.6 hours and is likely spherical in shape. It was named "Jovita", a common German female name unrelated to the discoverer's contemporaries, that was taken from the almanac Lahrer Hinkender Bote.

    <span class="mw-page-title-main">928 Hildrun</span>

    928 Hildrun, is a dark background asteroid, approximately 64 kilometers in diameter, located in the outer region of the asteroid belt. It was discovered on 23 February 1920, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany. The X-type asteroid has a rotation period of 14.1 hours. It was named "Hildrun", a common German female name unrelated to the discoverer's contemporaries, that was taken from the almanac Lahrer Hinkender Bote.

    927 Ratisbona is a large and dark background asteroid, approximately 76 kilometers in diameter, located in the outer region of the asteroid belt. It was discovered on 16 February 1920, by astronomer Max Wolf at the Heidelberg Observatory in southwest Germany. The carbonaceous C-type asteroid (CB) has a rotation period of 12.99 hours and is rather spherical in shape. It was named after the Bavarian city of Regensburg.

    929 Algunde, is a stony Flora asteroid from the inner regions of the asteroid belt, that measures approximately 11 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory on 10 March 1920. The S-type asteroid has a short rotation period of 3.3 hours and is likely spherical in shape. It was named "Algunde", a common German female name unrelated to the discoverer's contemporaries, that was taken from the almanac Lahrer Hinkender Bote.

    930 Westphalia is a very dark background asteroid and a slow rotator from the inner regions of the asteroid belt, that measures approximately 36 kilometers in diameter. It was discovered on 10 March 1920, by German astronomer Walter Baade at the Bergedorf Observatory in Hamburg. The carbonaceous C-type asteroid (Ch) has an exceptionally long rotation period of 100.7 hours and is likely spherical in shape. It was named after Westphalia, a region in northwestern Germany.

    931 Whittemora is a metallic background asteroid, approximately 46 kilometers in diameter, located in the outer region of the asteroid belt. It was discovered by French astronomer François Gonnessiat at the Algiers Observatory in North Africa on 19 March 1920. The M-type asteroid has a rotation period of 19.2 hours. It was named after American archaeologist Thomas Whittemore (1871–1950).

    941 Murray is a background asteroid, approximately 18 kilometers in diameter, located in the central region of the asteroid belt. It was discovered by Austrian astronomer Johann Palisa at the Vienna Observatory on 10 October 1920. The X-type asteroid has a short rotation period of 3.4 hours. It was named after British professor Gilbert Murray (1866–1957).

    964 Subamara, is a stony background asteroid from the outer regions of the asteroid belt, approximately 20 kilometers in diameter. It was discovered by Austrian astronomer Johann Palisa at the Vienna Observatory on 27 October 1921. The S-type asteroid has a rotation period of 6.9 hours. It was named for the observatory's "very bitter" observing conditions due to light pollution.

    977 Philippa is a large background asteroid from the outer regions of the asteroid belt, approximately 65 kilometers in diameter. It was discovered on 6 April 1922, by Russian–French astronomer Benjamin Jekhowsky at the Algiers Observatory in Northern Africa. The C-type asteroid is likely irregular in shape and has a rotation period of 15.4 hours. It was named after French financier Baron Philippe de Rothschild (1902–1988).

    <span class="mw-page-title-main">979 Ilsewa</span>

    979 Ilsewa is a background asteroid from the outer regions of the asteroid belt, approximately 36 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory on 29 June 1922. The uncommon T-type asteroid has a longer-than average rotation period of 42.6 hours. It was named after Ilse Walldorf, an acquaintance of the discoverer.

    989 Schwassmannia is a stony background asteroid and a slow rotator from the central regions of the asteroid belt, approximately 12.5 kilometers in diameter. It was discovered on 18 November 1922, by astronomer Friedrich Karl Arnold Schwassmann at the Bergedorf Observatory in Hamburg, Germany. The bright S/T-type asteroid has a long rotation period of 107.9 hours. It was named after the discoverer himself.

    <span class="mw-page-title-main">934 Thüringia</span>

    934 Thüringia is a dark background asteroid, approximately 54 kilometers in diameter, located in the central region of the asteroid belt. It was discovered on 15 August 1920, by astronomer Walter Baade at the Bergedorf Observatory in Hamburg, Germany. The hydrated C-type asteroid has a rotation period of 8.2 hours and is likely irregular in shape. It was named after the German state of Thuringia. The naming was inspired by the ocean liner SS Thuringia.

    References

    1. 1 2 3 4 5 "932 Hooveria (A920 FC)". Minor Planet Center. Retrieved 17 February 2020.
    2. 1 2 3 Schmadel, Lutz D. (2007). "(932) Hooveria". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 83. doi:10.1007/978-3-540-29925-7_933. ISBN   978-3-540-00238-3.
    3. 1 2 3 4 5 6 7 8 "JPL Small-Body Database Browser: 932 Hooveria (A920 FC)" (2020-01-06 last obs.). Jet Propulsion Laboratory . Retrieved 17 February 2020.
    4. 1 2 "Asteroid 932 Hooveria – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 17 February 2020.
    5. 1 2 3 4 5 6 "Asteroid 932 Hooveria". Small Bodies Data Ferret. Retrieved 17 February 2020.
    6. 1 2 3 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.
    7. 1 2 3 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)
    8. 1 2 Marciniak, A.; Bartczak, P.; Müller, T.; Sanabria, J. J.; Alí-Lagoa, V.; Antonini, P.; et al. (2018). "Photometric survey, modelling, and scaling of long-period and low-amplitude asteroids". Astronomy & Astrophysics. 610: A7. arXiv: 1711.01893 . doi:10.1051/0004-6361/201731479.
    9. 1 2 3 "LCDB Data for (932) Hooveria". Asteroid Lightcurve Database (LCDB). Retrieved 17 February 2020.
    10. 1 2 3 Lazzaro, D.; Angeli, C. A.; Carvano, J. M.; Mothé-Diniz, T.; Duffard, R.; Florczak, M. (November 2004). "S3OS2: the visible spectroscopic survey of 820 asteroids" (PDF). Icarus. 172 (1): 179–220. Bibcode:2004Icar..172..179L. doi:10.1016/j.icarus.2004.06.006 . Retrieved 17 February 2020.
    11. ↑ Warner, Brian D.; Sada, Pedro V.; Pollock, J.; Reichart, Daniel; Ivarsen, Ivan; Haislip, Josh; Lacluyze, Aaron; Nysewander, Melissa (October 2010). "Lightcurve Analysis of 932 Hooveria" (PDF). The Minor Planet Bulletin. 37 (4): 139. Bibcode:2010MPBu...37..139W.
    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.