4205 David Hughes

Last updated
4205 David Hughes
Discovery  [1]
Discovered by E. Bowell
Discovery site Anderson Mesa Stn.
Discovery date18 December 1985
Designations
(4205) David Hughes
Named after
 David Hughes   [1]
(British astronomer)
1985 YP ·1986 AF
1986 CF
Mars-crosser   [1] [2] [3]
Orbital characteristics   [2]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc 37.73 yr (13,780 d)
Aphelion 1.9843 AU
Perihelion 1.4686 AU
1.7264 AU
Eccentricity 0.1494
2.27 yr (829 d)
132.52°
0° 26m 4.2s / day
Inclination 16.479°
276.55°
109.98°
Earth  MOID 0.5525 AU (215 LD)
Physical characteristics
Mean diameter
3.92  km (calculated) [3]
24  h [4]
0.20(assumed) [3]
SMASS = X e   [2] [5]
14.4 [2] [3]

    4205 David Hughes, provisional designation 1985 YP, is a Mars-crossing asteroid from inside the innermost regions of the asteroid belt, approximately 4 kilometers (2.5 miles) in diameter. It was discovered on 18 December 1985, by American astronomer Edward Bowell at Lowell's Anderson Mesa Station near Flagstaff, Arizona. [1] The transitional X-type asteroid has a longer-than average rotation period of at least 24 hours. [3] It was named for British astronomer David Hughes. [1]

    Contents

    Orbit and classification

    David Hughes is a Mars-crossing asteroid, a member of the dynamically unstable group, located between the main belt and near-Earth populations, and crossing the orbit of Mars at 1.666  AU. It orbits the Sun inside the innermost region of the asteroid belt at a distance of 1.5–2.0  AU once every 2 years and 3 months (829 days; semi-major axis of 1.73 AU). Its orbit has an eccentricity of 0.15 and an inclination of 16° with respect to the ecliptic. [2] On 12 October 2026 it will pass 4,341,000 km; 2,698,000 mi (0.02902 AU) from Mars. Another close Martian approach will occur at a similar distance on 24 November 2103. [2]

    The body's observation arc begins with a precovery taken at the Siding Spring Observatory in June 1980, or five years prior to its official discovery observation at Anderson Mesa. [1]

    Physical characteristics

    In the SMASS classification, David Hughes is a Xe-subtype that transitions from the X-type to the very bright E-type asteroids. [2]

    Rotation period

    In August 2012, a rotational lightcurve of David Hughes was obtained from photometric observations by Italian amateur astronomers Roberto Crippa and Federico Manzini at the Sozzago Astronomical Station ( A12 ). Lightcurve analysis gave a rotation period of at least 24 hours with a brightness amplitude of 0.25 magnitude ( U=2- ). [3] Most asteroids have a period shorter than 20 hours (also see List of slow rotators).

    Diameter and albedo

    The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.20 and calculates a diameter of 3.92 kilometers based on an absolute magnitude of 14.4. [3]

    This makes David Hughes one of the smallest mid-sized Mars-crossing asteroids smaller than 1065 Amundsenia (9.75 km), 1474 Beira (8.73 km), 1011 Laodamia (7.5 km), 1727 Mette (est. 9 km), 1131 Porzia (7.13 km), 1235 Schorria (est. 9 km), 985 Rosina (8.18 km), 1310 Villigera (15.24 km) and 1468 Zomba (7 km), and much smaller than the largest members of this dynamical group, namely, 132 Aethra, 323 Brucia, 1508 Kemi, 2204 Lyyli and 512 Taurinensis, which are all larger than 20 kilometers in diameter.

    Naming

    This minor planet was named after British astronomer and professor of astronomy at the University of Sheffield. [1] The official naming citation was published by the Minor Planet Center on 2 November 1990 ( M.P.C. 17223). [6]

    Related Research Articles

    985 Rosina, provisional designation 1922 MO, is a stony asteroid and sizable Mars-crosser on an eccentric orbit from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 14 October 1922, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in Germany. The asteroid's name is a common German female name, unrelated to the discoverer's contemporaries.

    Laodamia, provisional designation 1924 PK, is a stony asteroid and sizable Mars-crosser near the innermost regions of the asteroid belt, approximately 7.5 kilometers in diameter. It was discovered on 5 January 1924, by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany. The asteroid was named after Laodamia from Greek mythology.

    1065 Amundsenia, provisional designation 1926 PD, is an stony asteroid and sizeable Mars-crosser on an eccentric orbit from the inner asteroid belt, approximately 10 kilometers in diameter. It was discovered on 4 August 1926, by Soviet astronomer Sergey Belyavsky at the Simeiz Observatory on the Crimean peninsula. The asteroid was named after Norwegian polar explorer Roald Amundsen.

    1131 Porzia, provisional designation 1929 RO, is a stony asteroid and sizable Mars-crosser from the innermost regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 10 September 1929, by German astronomer Karl Reinmuth at the Heidelberg Observatory in southwest Germany. The asteroid was named after Porcia wife of Brutus, who assassinated Julius Caesar.

    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.

    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.

    2744 Birgitta, provisional designation 1975 RB, is a stony asteroid and a Mars-crosser on an eccentric orbit from the innermost regions of the asteroid belt, approximately 3 kilometers in diameter. It was discovered at the Kvistaberg Station of the Uppsala Observatory in Sweden on 4 September 1975, by Swedish astronomer Claes-Ingvar Lagerkvist, who named it after his daughter, Anna Birgitta Angelica Lagerkvist. The S-type asteroid has a rotation period of 9.0 hours.

    26074 Carlwirtz, provisional designation 1977 TD, is a dynamical Hungaria asteroid and binary Mars-crosser from the innermost regions of the asteroid belt, approximately 3 kilometers in diameter. It was discovered on 8 October 1977, by German astronomer Hans-Emil Schuster at ESO's La Silla Observatory in northern Chile. The likely binary asteroid on a relatively circular orbit has a short rotation period of 2.5 hours. It was named for German astronomer Carl Wilhelm Wirtz. The system's suspected minor-planet moon of unknown size was first detected in 2013.

    4451 Grieve, provisional designation 1988 JJ, is a stony asteroid and large Mars-crosser on an eccentric orbit from the central asteroid belt, approximately 12 kilometers in diameter. It was discovered on 9 May 1988, by American astronomer Carolyn Shoemaker at the Palomar Observatory in California. The S-type asteroid is likely elongated and has a rotation period of 6.9 hours. It was named for Canadian geologist Richard Grieve.

    1316 Kasan, provisional designation 1933 WC, is a stony asteroid and sizable Mars-crosser on an eccentric orbit from the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 17 November 1933, by Soviet astronomer Grigory Neujmin at the Simeiz Observatory on the Crimean peninsula. The asteroid was named for the city of Kazan, Russia, and its nearby Engelhardt Observatory.

    39741 Komm, provisional designation 1997 AT6, is a stony asteroid and eccentric Mars-crosser from the innermost regions of the asteroid belt, approximately 2 kilometers in diameter. It was discovered on 9 January 1997, by American astronomer Roy Tucker at Goodricke-Pigott Observatory in Tucson, Arizona, United States. The asteroid was named for American helioseismologist Rudolf Komm.

    3635 Kreutz, provisional designation 1981 WO1, is a slowly rotating Hungaria asteroid and Mars-crosser from the innermost regions of the asteroid belt, approximately 3 kilometers in diameter. It was discovered on 21 November 1981, by Czech astronomer Luboš Kohoutek at the Calar Alto Observatory in southern Spain.

    3343 Nedzel, provisional designation 1982 HS, is an asteroid and sizable Mars-crosser on an eccentric orbit from the inner regions of the asteroid belt, approximately 6.5 kilometers in diameter. It was discovered on 28 April 1982, by astronomer Laurence Taff at the Lincoln Laboratory's Experimental Test Site in Socorro, New Mexico, in the United States. The asteroid was named in memory of Alexander Nedzel, a manager at MIT Lincoln Laboratory.

    2035 Stearns, provisional designation 1973 SC, is a bright Hungaria asteroid and sizable Mars-crosser inside the inner regions of the asteroid belt, approximately 6 kilometers in diameter. It was discovered on 21 September 1973, by American astronomer James Gibson at the Leoncito Astronomical Complex in Argentina. The transitional E-type asteroid has a long rotation period of 93 hours. It was named after American astronomer Carl Leo Stearns.

    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.

    3198 Wallonia, provisional designation 1981 YH1, is a stony asteroid and sizable Mars-crosser from the inner regions of the asteroid belt, approximately 7.1 kilometers (4.4 miles) in diameter. It was discovered on 30 December 1981, by Belgian astronomer François Dossin at the Haute-Provence Observatory in France. The S/K-type asteroid has a rotation period of 7.5 hours. It was named after the French speaking region of Wallonia in Belgium.

    1468 Zomba, provisional designation 1938 PA, is a stony asteroid and large Mars-crosser near the innermost regions of the asteroid belt, approximately 7 kilometers in diameter. Discovered by Cyril Jackson at Johannesburg Observatory in 1938, the asteroid was named after the city of Zomba in the Republic of Malawi.

    4142 Dersu-Uzala, provisional designation 1981 KE, is a Hungaria asteroid, sizable Mars-crosser and potentially slow rotator from the innermost region of the asteroid belt, approximately 6 kilometers in diameter. It was discovered by Czech astronomer Zdeňka Vávrová at Kleť Observatory on 28 May 1981. The rare A-type asteroid has a rotation period of 140 hours. It was named after the Siberian trapper and hunter Dersu Uzala.

    <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.

    (15700) 1987 QD, provisional designation 1987 QD, is a Mars-crossing asteroid and a binary candidate from inside the innermost region of the asteroid belt, approximately 3 kilometers in diameter. It was discovered on 24 August 1987, by American astronomer Stephen Singer-Brewster at the Palomar Observatory in California. The likely spherical X-type asteroid has a rotation period of 3.1 hours. The suspected presence of a kilometer-sized minor-planet moon was announced in November 2000.

    References

    1. 1 2 3 4 5 6 7 "4205 David Hughes (1985 YP)". Minor Planet Center. Retrieved 17 May 2018.
    2. 1 2 3 4 5 6 7 "JPL Small-Body Database Browser: 4205 David Hughes (1985 YP)" (2018-02-27 last obs.). Jet Propulsion Laboratory . Retrieved 17 May 2018.
    3. 1 2 3 4 5 6 7 "LCDB Data for (4205) David Hughes". Asteroid Lightcurve Database (LCDB). Retrieved 17 May 2018.
    4. ↑ Behrend, Raoul. "Asteroids and comets rotation curves – (4205) David Hughes". Geneva Observatory. Retrieved 17 May 2018.
    5. ↑ "Asteroid 4205 David Hughes". Small Bodies Data Ferret. Retrieved 15 May 2018.
    6. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 17 May 2018.

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