5682 Beresford

Last updated

5682 Beresford
Discovery  [1]
Discovered by R. H. McNaught
Discovery site Siding Spring Obs.
Discovery date9 October 1990
Designations
(5682) Beresford
Named after
Tony Beresford  [1]
(Australian amateur astronomer)
1990 TB ·1969 PP
1983 RV5
Mars crosser   [1] [2] [3]
Orbital characteristics   [2]
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 0
Observation arc 68.89 yr (25,163 d)
Aphelion 2.9826 AU
Perihelion 1.6114 AU
2.2970 AU
Eccentricity 0.2985
3.48 yr (1,272 d)
77.335°
0° 16m 59.16s / day
Inclination 7.9606°
212.78°
138.58°
Earth  MOID 0.616 AU (240 LD)
Physical characteristics
Mean diameter
4.125±0.661  km [4] [5]
5.66 km(calculated) [3]
7.33±0.73 km [6]
3.769±0.005  h [lower-alpha 1]
0.109 [6]
0.20(assumed) [3]
0.365±0.145 [4] [5]
S (assumed) [3]
13.60 [2] [3] [5] [4]
13.70 [1] [6]

    5682 Beresford, provisional designation 1990 TB is a stony asteroid and sizable Mars-crosser from the inner regions of the asteroid belt, approximately 6 kilometers (3.7 miles) in diameter. It was discovered on 9 October 1990, by astronomer Robert McNaught at the Siding Spring Observatory in Australia. [1] The assumed S-type asteroid has a short rotation period of 3.8 hours. [3] It was named after Australian amateur astronomer Anthony Beresford. [1]

    Contents

    Orbit and classification

    Beresford is a member of the Mars-crossing asteroids, a dynamically unstable group between the main belt and the near-Earth populations, crossing the orbit of Mars at 1.66  AU. [1] It orbits the Sun at a distance of 1.61–2.98  AU once every 3 years and 6 months (1,272 days; semi-major axis of 2.3 AU). Its orbit has an eccentricity of 0.30 and an inclination of 8° with respect to the ecliptic. [2] The body's observation arc begins with a precovery taken at Palomar Observatory in November 1949, or almost 41 years prior to its official discovery observation at Siding Spring in October 1990. [1]

    Naming

    This minor planet was named after Tony Beresford (Anthony Charles Beresford; born 1942), an Australian amateur astronomer who has been an active observer of artificial satellites as part of the Operation Moonwatch program. He has also been instrumental in the distribution of astronomical information and discoveries in South Australia. [1] The name was suggested by Duncan I. Steel and the official citation was published by the Minor Planet Center on 2 April 1999 ( M.P.C. 34341). [7]

    Physical characteristics

    Beresford is an assumed, stony S-type asteroid, [3] the most common spectral type in the inner region of the Solar System.

    Rotation period

    In October 2011, a rotational lightcurve of Beresford was obtained from photometric observations by Brian Skiff. Lightcurve analysis gave a rotation period of 3.769±0.005 hours with a brightness variation of 0.08±0.01 magnitude ( U=3- ), indicative of a spherical shape. [lower-alpha 1] The result supersedes an alternative period solution of 7.536±0.002 hours (twice the period) with an amplitude of 0.20 magnitude previously obtained by Robert A. Koff at the Antelope Hills Observatory ( H09 ) in Colorado in October 2004 ( U=2 ). [8] [lower-alpha 2]

    Diameter and albedo

    According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Beresford measures 4.13 kilometers in diameter and its surface has an albedo of 0.36(5). [5] [4] However, a 2017-WISE-study dedicated to Mars-crossing asteroids determined a larger diameter of 7.33 kilometers due to a much lower albedo of 0.109. [6] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for as stony asteroid of 0.20 and derives a diameter of 5.66 kilometers based on an absolute magnitude of 13.6. [3]

    Sizable Mars-crosser

    With a diameter of up to 7.3 kilometers, Beresford is still one of the smaller "sizable" Mars-crossing asteroids (5–15 km). These include 3581 Alvarez (13.69 km) 1065 Amundsenia (9.75 km), 1139 Atami (9.35 km), 3737 Beckman (14.36 km), 1474 Beira (15.46 km), 1011 Laodamia (7.39 km), 1727 Mette (5.44 km), 1131 Porzia (7.13 km), 1235 Schorria (5.55 km), 985 Rosina (8.18 km), 1310 Villigera (15.24 km), and 1468 Zomba (7 km), which are smaller than the largest members of this dynamical group, namely, 132 Aethra, 323 Brucia (former Mars-crosser), 1508 Kemi, 2204 Lyyli and 512 Taurinensis, all larger than 20 kilometers.

    Notes

    1. 1 2 Brian A. Skiff (2011) web, rotation period 3.769±0.005 hours with a brightness amplitude of 0.08 mag. Quality code is 3-. Summary figures for (5682) Beresford at the LCDB.
    2. ↑ Lightcurve plot of (5682) Beresford , by Robert A. Koff at the Antelope Hills Observatory ( H09 ). Rotation period: 7.536±0.002 hours with a brightness amplitude of 0.20 mag. Quality code is 2. Summary figures at the LCDB.

    Related Research Articles

    26858 Misterrogers, provisional designation 1993 FR, is a stony asteroid and sizable Mars-crosser on an eccentric orbit from the asteroid belt, approximately 5.1 miles in diameter. It was discovered on March 21, 1993, by American astronomer Eleanor Helin at the Palomar Observatory in California. The likely S-type asteroid has a rotation period of 8.0 hours. It was named after children's television host Fred Rogers.

    <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.

    Edith, provisional designation 1903 MH, is a carbonaceous background asteroid from the outer regions of the asteroid belt, approximately 83 kilometers in diameter. It was discovered on 22 September 1903, by American astronomer Raymond Dugan at the Heidelberg-Königstuhl State Observatory in southwest Germany, who named it after his sister Edith Eveleth.

    <span class="mw-page-title-main">1107 Lictoria</span>

    1107 Lictoria is a large Hygiea asteroid, approximately 79 kilometers in diameter, from the outer regions of the asteroid belt. It was discovered by Luigi Volta at the Pino Torinese Observatory in 1929, and named after the Fasces Lictores, Latin for "Fasci Littori", the symbol of the Italian fascist party.

    1139 Atami, provisional designation 1929 XE, is a stony asteroid and sizable Mars-crosser, as well as a synchronous binary system near the innermost region of the asteroid belt, approximately 9 kilometers in diameter. It was discovered on 1 December 1929, by Japanese astronomers Okuro Oikawa and Kazuo Kubokawa at the Tokyo Astronomical Observatory near Tokyo. It was named after the Japanese city of Atami. It has the lowest Minimum orbit intersection distance (MOID) to Mars of any asteroid as large as it, its orbit intersecting only 0.03 astronomical units from the planet.

    3581 Alvarez, provisional designation 1985 HC, is a carbonaceous asteroid and a very large Mars-crosser on an eccentric orbit from the asteroid belt, approximately 13.7 kilometers in diameter. It was discovered on 23 April 1985, by American astronomer couple Carolyn and Eugene Shoemaker at the Palomar Observatory in California. The likely spherical B-type asteroid has a rotation period of 33.4 hours. It was named for scientists Luis Alvarez and his son Walter Alvarez.

    19982 Barbaradoore, provisional designation 1990 BJ, is an eccentric, stony Phocaea asteroid and a recent Mars-crosser from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered on 22 January 1990, by American astronomer Eleanor Helin at the Palomar Observatory in California, United States. The asteroid was named after Barbara Doore, a cousin of the discoverer.

    3737 Beckman, provisional designation 1983 PA, is a stony asteroid and sizable Mars-crosser on an eccentric orbit from the inner regions of the asteroid belt, approximately 14 kilometers in diameter. It was discovered on 8 August 1983, by American astronomer Eleanor Helin at the Palomar Observatory in California. The S-type asteroid has a rotation period of 3.1 hours. It was named for American Chemist Arnold Beckman.

    1474 Beira, provisional designation 1935 QY, is a bright carbonaceous asteroid and large Mars-crosser on an eccentric orbit from the asteroid belt, approximately 15 kilometers in diameter. It was discovered on 20 August 1935, by South African astronomer Cyril Jackson at the Union Observatory in Johannesburg. The asteroid was named after the port city of Beira in Mozambique.

    7505 Furusho, provisional designation 1997 AM2, is a stony asteroid and sizable Mars-crosser on an eccentric orbit from the asteroid belt, approximately 10 kilometers (6.2 miles) in diameter. It was discovered on 3 January 1997, by Japanese astronomer Takao Kobayashi at the Ōizumi Observatory in the Kantō region of Japan. The assumed S-type asteroid is likely elongated in shape and has a rotation period of 4.1 hours. It was named for Japanese astronomer Reiko Furusho.

    7369 Gavrilin, provisional designation 1975 AN, is a stony Phocaean asteroid, sizable Mars-crosser, and binary system on an eccentric orbit from the inner regions of the asteroid belt, approximately 5.5 kilometers in diameter. It was discovered on 13 January 1975, by Russian astronomer Tamara Smirnova at the Crimean Astrophysical Observatory in Nauchnyj, on the Crimean peninsula. The assumed S-type asteroid has a long rotation period of 49.1 hours. It was named after Russian composer Valery Gavrilin. The discovery of its 2.4-kilometer sized minor-planet moon was announced in October 2008.

    3854 George, provisional designation: 1983 EA, is a stony Hungaria asteroid and Mars-crosser from the innermost regions of the asteroid belt, approximately 3.5 kilometers in diameter. It was discovered on 13 March 1983, by American astronomer couple Carolyn and Eugene Shoemaker at the Palomar Observatory in California. The unlikely synchronous binary system has a rotation period of 3.3 hours. It was named after the discoverer's father-in-law, George Shoemaker.

    3800 Karayusuf, provisional designation 1984 AB, is a Mars-crossing asteroid and suspected binary system from inside the asteroid belt, approximately 2.5 kilometers in diameter. It was discovered on 4 January 1984, by American astronomer Eleanor Helin at the Palomar Observatory in California. The S/L-type asteroid has a short rotation period of 2.2 hours. It was named after Syrian physician Alford Karayusuf, a friend of the discoverer.

    6170 Levasseur, provisional designation 1981 GP, is a stony Phocaean asteroid and sizable Mars-crosser on an eccentric orbit from the inner regions of the asteroid belt, approximately 5.7 kilometers in diameter. It was discovered on 5 April 1981, by American astronomer Edward Bowell at the Anderson Mesa Station in Arizona. The S-type asteroid has a short rotation period of 2.65 hours. It was named for French planetary scientist Anny-Chantal Levasseur-Regourd.

    2629 Rudra, provisional designation 1980 RB1, is a sizable Mars-crossing asteroid and slow rotator inside the asteroid belt, approximately 5.3 kilometers (3.3 miles) in diameter. It was discovered on 13 September 1980, by American astronomer Charles Kowal at the Palomar Observatory in California. The dark B-type asteroid has a long rotation period 123 hours and likely an elongated shape. It was named after Rudra from Hindu mythology.

    7776 Takeishi, provisional designation 1993 BF, is a background asteroid from the inner regions of the asteroid belt, approximately 6 kilometers in diameter. It was discovered on 20 January 1993, by Japanese astronomer Takeshi Urata at the Nihondaira Observatory in Japan. The assumed S-type asteroid has a rotation period of 8.9 hours. It was named after Japanese amateur astronomer Masanori Takeishi.

    3255 Tholen, provisional designation 1980 RA, is a stony asteroid, Mars-crosser and relatively fast rotator, that measures approximately 5.1 kilometers in diameter. It was discovered on 2 September 1980, by American astronomer Edward Bowell at Lowell's Anderson Mesa Station in Flagstaff, Arizona. The S-type asteroid has a rotation period of 2.95 hours. It was later named after American astronomer David Tholen.

    <span class="mw-page-title-main">3674 Erbisbühl</span>

    3674 Erbisbühl is an stony asteroid and one of the largest Mars-crossers from the innermost regions of the asteroid belt, approximately 11 kilometers in diameter. It was discovered on 13 September 1963, by German astronomer Cuno Hoffmeister at his Sonneberg Observatory on Mount Erbisbühl in Eastern Germany.

    <span class="mw-page-title-main">1310 Villigera</span>

    1310 Villigera, provisional designation 1932 DB, is a stony asteroid and large Mars-crosser from the innermost regions of the asteroid belt, approximately 14 kilometers in diameter. It was discovered on 28 February 1932, by German astronomer Friedrich Schwassmann at Bergedorf Observatory in Hamburg, Germany. The asteroid was named after astronomer Walther Villiger.

    (38063) 1999 FH is a rare-type asteroid from the inner regions of the asteroid belt, classified as Mars-crosser and exceptionally slow rotator, approximately 4 kilometers in diameter. It was discovered on 16 March 1999, by Croatian astronomers Korado Korlević and Mario Jurić at Višnjan Observatory in Croatia.

    References

    1. 1 2 3 4 5 6 7 8 9 "5682 Beresford (1990 TB)". Minor Planet Center. Retrieved 9 November 2018.
    2. 1 2 3 4 "JPL Small-Body Database Browser: 5682 Beresford (1990 TB)" (2018-10-22 last obs.). Jet Propulsion Laboratory . Retrieved 9 November 2018.
    3. 1 2 3 4 5 6 7 8 "LCDB Data for (5682) Beresford". Asteroid Lightcurve Database (LCDB). Retrieved 9 November 2018.
    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.
    5. 1 2 3 4 Mainzer, A. K.; Bauer, J. M.; Cutri, R. M.; Grav, T.; Kramer, E. A.; Masiero, J. R.; et al. (June 2016). "NEOWISE Diameters and Albedos V1.0". NASA Planetary Data System: EAR-A-COMPIL-5-NEOWISEDIAM-V1.0. Bibcode:2016PDSS..247.....M . Retrieved 9 November 2018.
    6. 1 2 3 4 Alí-Lagoa, V.; Delbo', M. (July 2017). "Sizes and albedos of Mars-crossing asteroids from WISE/NEOWISE data". Astronomy and Astrophysics. 603: 8. arXiv: 1705.10263 . Bibcode:2017A&A...603A..55A. doi:10.1051/0004-6361/201629917.
    7. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 9 November 2018.
    8. ↑ Koff, Robert A. (June 2005). "Lightcurve photometry of asteroids 212 Medea, 517 Edith, 3581 Alvarez 5682 Beresford, and 5817 Robertfrazer". The Minor Planet Bulletin. 32 (2): 32–34. Bibcode:2005MPBu...32...32K. ISSN   1052-8091.
    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.