2542 Calpurnia

Last updated

2542 Calpurnia
Discovery  [1]
Discovered by E. Bowell
Discovery site Anderson Mesa Stn.
Discovery date11 February 1980
Designations
(2542) Calpurnia
Pronunciation /kælˈpɜːrniə/ [2]
Named after
 Calpurnia (Julius Caesar's wife) [3]
1980 CF ·1972 XN2
1976 OE
main-belt  ·(outer)
Orbital characteristics   [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 62.57 yr (22,854 days)
Aphelion 3.3624 AU
Perihelion 2.8997 AU
3.1311 AU
Eccentricity 0.0739
5.54 yr (2,024 days)
248.88°
0° 10m 40.44s / day
Inclination 4.6207°
145.71°
47.930°
Physical characteristics
Dimensions18±1 km [4]
20.854±0.281 km [5]
27.6±2.3 km [6]
0.0639±0.012 [6]
0.102±0.007 [5]
0.15±0.02 [4]
C   [7]
11.6 [1]

    2542 Calpurnia, provisionally designated 1980 CF, is a carbonaceous high-albedo asteroid from the outer regions of the asteroid belt, approximately 20 kilometers in diameter. It was discovered on 11 February 1980, by American astronomer Edward Bowell at Anderson Mesa Station, Flagstaff, United States. [8] The asteroid was named after Julius Caesar's wife, Calpurnia. [3]

    Contents

    Orbit and classification

    Calpurnia orbits the Sun in the outer main-belt at a distance of 2.9–3.4  AU once every 5 years and 6 months (2,024 days). Its orbit has an eccentricity of 0.07 and an inclination of 5° with respect to the ecliptic. [1] In 1954, a first precovery was taken at the Palomar Observatory in California, extending the body's observation arc by 26 prior to its official discovery observation at Anderson Mesa. [8]

    Physical characterization

    Diameter and albedo

    According to the surveys carried out by the Infrared Astronomical Satellite IRAS and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Calpurnia measures 27.6 and 20.854 kilometers in diameter, and its surface has an albedo of 0.0639 and 0.102, respectively. [6] [5] It has an absolute magnitude of 11.6. [1]

    Near-infrared spectroscopic observations, however, gave a higher albedo of 0.15 with a subsequently shorter diameter of 18 kilometers. Calpurnia has a featureless surface with up to 60% amorphous magnesium pyroxenes that might explain the high albedo for an carbonaceous outer-belt asteroid. [4]

    Lightcurve

    As of 2017, no rotational lightcurve has been obtained. The body's spectral type, as well as its rotation period and shape remain unknown. [1] [9]

    Naming

    This minor planet was named after Calpurnia, the last wife of Julius Caesar. [3] The approved naming citation was published by the Minor Planet Center on 8 April 1982 ( M.P.C. 6834). [10]

    Related Research Articles

    2127 Tanya, provisional designation 1971 KB1, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 40 kilometers in diameter. It was discovered on 29 May 1971, by Russian astronomer Lyudmila Chernykh at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula. It was named in memory of Tanya Savicheva, a Russian child diarist during World War II.

    Lagrangea, provisional designation 1923 OU, is a carbonaceous background asteroid from the outer region of the asteroid belt, approximately 30 kilometers in diameter. It was discovered on 12 September 1923, by Russian astronomer Sergey Belyavsky at the Simeiz Observatory on the Crimean peninsula. The asteroid was named after Italian mathematician and astronomer Joseph-Louis Lagrange.

    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.

    <span class="mw-page-title-main">1073 Gellivara</span> Asteroid

    1073 Gellivara, provisional designation 1923 OW, is a dark Themistian asteroid, approximately 27 kilometers in diameter, located in the outer regions of the asteroid belt. It was discovered by Austrian astronomer Johann Palisa at the Vienna Observatory on 14 September 1923, and later named after the Swedish town of Gällivare.

    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.

    1154 Astronomia, provisional designation 1927 CB, is a carbonaceous background asteroid from the outer regions of the asteroid belt, approximately 60 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory on 8 February 1927. The asteroid was named for the natural science of astronomy.

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

    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.

    1859 Kovalevskaya, provisional designation 1972 RS2, is a carbonaceous asteroid from the outer regions of the asteroid belt, approximately 40 kilometers in diameter.

    1567 Alikoski, provisional designation 1941 HN, is a rare-type carbonaceous asteroid from the outer region of the asteroid belt, approximately 67 kilometers in diameter. It was discovered on 22 April 1941, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland. It was later named after Finnish astronomer Heikki Alikoski.

    1815 Beethoven, provisional designation 1932 CE1, is a carbonaceous background asteroid from the outer regions of the asteroid belt, approximately 30 kilometers (19 miles) in diameter. It was discovered on 27 January 1932, by German astronomer Karl Reinmuth at the Heidelberg Observatory. The uncommon F-type asteroid seems to have a long rotation period of 54 hours (tentative). It was named after Ludwig van Beethoven.

    1295 Deflotte, provisional designation 1933 WD, is a carbonaceous asteroid from the outer regions of the asteroid belt, approximately 48 kilometers in diameter. It was discovered on 25 November 1933, by French astronomer Louis Boyer at the Algiers Observatory in Algeria, North Africa. The asteroid was named after the discoverer's nephew.

    <span class="mw-page-title-main">1555 Dejan</span>

    1555 Dejan, provisional designation 1941 SA, is an asteroid from the background population of the central regions of the asteroid belt, approximately 22 kilometers in diameter. It was discovered on 15 September 1941, by Belgian astronomer Fernand Rigaux at the Royal Observatory of Belgium in Uccle. The asteroid was named after Dejan Đurković, son of Serbian astronomer Petar Đurković.

    1308 Halleria, provisional designation 1931 EB, is a carbonaceous Charis asteroid from the outer regions of the asteroid belt, approximately 43 kilometers in diameter. It was discovered on 12 March 1931, by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory. The asteroid was named after Albrecht von Haller a Swiss physician, botanist and poet.

    1264 Letaba, provisional designation 1933 HG, is a carbonaceous asteroid and possible tumbler from the background population of the outer asteroid belt, approximately 70 kilometers in diameter. It was discovered on 21 April 1933, by South African astronomer Cyril Jackson at the Union Observatory in Johannesburg. The asteroid was named for the Letaba River in eastern South Africa.

    <span class="mw-page-title-main">1841 Masaryk</span>

    1841 Masaryk (prov. designation: 1971 UO1) is a carbonaceous background asteroid from the outer region of the asteroid belt, approximately 46 kilometers in diameter. It was discovered on 26 October 1971, by Czech astronomer Luboš Kohoutek at Bergedorf Observatory in Hamburg, Germany. The asteroid was named after the first President of Czechoslovakia, Tomáš Garrigue Masaryk.

    <span class="mw-page-title-main">1356 Nyanza</span>

    1356 Nyanza, provisional designation 1935 JH, is a dark asteroid from the background population of the outer asteroid belt, approximately 63 kilometers in diameter. It was discovered on 3 May 1935, by South-African astronomer Cyril Jackson at the Union Observatory in Johannesburg. The asteroid was named for the former Nyanza Province in Kenya, Africa.

    1760 Sandra, provisional designation 1950 GB, is a carbonaceous asteroid from the outer regions of the asteroid belt, approximately 35 kilometers in diameter. It was discovered on 10 April 1950, by South African astronomer Ernest Johnson at Union Observatory in Johannesburg, and named after his granddaughter Sandra.

    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.

    <span class="mw-page-title-main">2120 Tyumenia</span>

    2120 Tyumenia is a dark background asteroid, approximately 45 kilometers in diameter, located in the outer regions of the asteroid belt. It was discovered on 9 September 1967, by Soviet astronomer Tamara Smirnova at the Crimean Astrophysical Observatory in Nauchnyj, on the Crimean peninsula. The asteroid was named for the now Russian district of Tyumen Oblast in Western Siberia.

    2058 Róka, provisional designation 1938 BH, is a Themistian asteroid from the outer regions of the asteroid belt, approximately 22 kilometers in diameter.

    References

    1. 1 2 3 4 5 6 "JPL Small-Body Database Browser: 2542 Calpurnia (1980 CF)" (2017-01-27 last obs.). Jet Propulsion Laboratory . Retrieved 18 June 2017.
    2. ↑ "Calpurnia". Dictionary.com Unabridged (Online). n.d.
    3. 1 2 3 Schmadel, Lutz D. (2007). "(2542) Calpurnia". Dictionary of Minor Planet Names – (2542) Calpurnia. Springer Berlin Heidelberg. p. 208. doi:10.1007/978-3-540-29925-7_2543. ISBN   978-3-540-00238-3.
    4. 1 2 3 Kasuga, Toshihiro; Usui, Fumihiko; Shirahata, Mai; Kuroda, Daisuke; Ootsubo, Takafumi; Okamura, Natsuko; et al. (February 2015). "Near-Infrared Spectra of High-Albedo Outer Main-Belt Asteroids". The Astronomical Journal. 149 (2): 8. Bibcode:2015AJ....149...37K. doi:10.1088/0004-6256/149/2/37. 37.
    5. 1 2 3 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal. 741 (2): 20. arXiv: 1109.4096 . Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68 . Retrieved 18 June 2017.
    6. 1 2 3 Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. 12: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode:2004PDSS...12.....T . Retrieved 22 October 2019.
    7. ↑ Hasselmann, P. H.; Carvano, J. M.; Lazzaro, D.; Mothé-Diniz, T. (February 2010). "SDSS-based taxonomic classification and orbital distribution of main belt asteroids". Astronomy and Astrophysics. 510: 12. Bibcode:2010A&A...510A..43C. doi: 10.1051/0004-6361/200913322 . Retrieved 8 August 2017.
    8. 1 2 "2542 Calpurnia (1980 CF)". Minor Planet Center. Retrieved 18 June 2017.
    9. ↑ "LCDB Data for (2542) Calpurnia". Asteroid Lightcurve Database (LCDB). Retrieved 18 June 2017.
    10. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 18 June 2017.
    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.