1474 Beira

Last updated
1474 Beira
Discovery [1]
Discovered by C. Jackson
Discovery site Johannesburg Obs.
Discovery date20 August 1935
Designations
(1474) Beira
Named after
 Beira [2]
(city in Mozambique)
1935 QY ·1950 DQ
Mars-crosser [1] [3] [4]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 81.06 yr (29,606 d)
Aphelion 4.0740 AU
Perihelion 1.3920 AU
2.7330 AU
Eccentricity 0.4907
4.52 yr (1,650 days)
19.609°
0° 13m 5.16s / day
Inclination 26.683°
323.50°
84.070°
Physical characteristics
Dimensions8.73 km (calculated) [4]
14.9±1.5 km [5]
15±2 km [6]
15.46±1.55 km [7]
4.184±0.001 h [8] [9] [lower-alpha 1]
4.184±0.002 h [10]
0.06±0.01 [6]
0.064±0.013 [7]
0.07±0.01 [5]
0.20 (assumed) [4]
Tholen = F X [1]
SMASS = B [1] [4]
B–V = 0.620 [1]
U–B = 0.245 [1]
12.66 [1] [4] [5] [6] [7]

    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. [3] The asteroid was named after the port city of Beira in Mozambique. [2]

    Contents

    Orbit and classification

    Beira is a Mars-crossing asteroid, a dynamically unstable group between the main belt and the near-Earth populations, crossing the orbit of Mars at 1.666  AU. It orbits the Sun at a distance of 1.4–4.1  AU once every 4 years and 6 months (1,650 days). Its orbit has a high eccentricity of 0.49 and an inclination of 27° with respect to the ecliptic. [1] The body's observation arc begins with its official discovery observation at Johannesburg in 1935. [3]

    Physical characteristics

    In the SMASS classification, Beira is a bright carbonaceous B-type asteroid, while in the Tholen classification its spectral type is ambiguous, closest to an F-type and somewhat similar to that of an X-type asteroid. [1]

    Rotation period

    Three rotational lightcurves of Beira were obtained from photometric observations. Lightcurve analysis gave a well-defined rotation period of 4.184 hours with a brightness amplitude between 0.15 and 0.24 magnitude ( U=3/3/3 ). [8] [9] [10] [lower-alpha 1]

    Diameter and albedo

    According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Beira measures between 14.9 and 15.46 kilometers in diameter and its surface has a low albedo between 0.06 and 0.07. [5] [6] [7] Conversely, the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and consequently calculates a smaller diameter of 8.73 kilometers using an absolute magnitude of 12.66. [4]

    With a diameter close to 15 kilometers, Beira is larger than most sizeable Mars-crossing asteroids such as 1065 Amundsenia (9.75 km), 1139 Atami (9.35 km), 1011 Laodamia (7.39 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); but still smaller than the largest members of this dynamical group, namely, 132 Aethra, 323 Brucia, 1508 Kemi, 2204 Lyyli and 512 Taurinensis, which are larger than 20 kilometers in diameter (in one or other given source).

    Naming

    This minor planet was named after the port city of Beira in Mozambique. [2] The official naming citation was published by the Minor Planet Center in April 1953 ( M.P.C. 909). [11]

    Notes

    1. 1 2 Lightcurve plot of (1474) Beira, Robert Koff, Antelope Hills Observatory (H09). Summary figures at LCDB

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    <span class="mw-page-title-main">512 Taurinensis</span> Mars-crossing asteroid

    Taurinensis, provisional designation 1903 LV, is a stony asteroid and large Mars-crosser on an eccentric orbit from the inner regions of the asteroid belt, approximately 20 kilometers in diameter. It was discovered on 23 June 1903, by astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory in southwest Germany. The asteroid was named after the Italian city of Turin. It is the 4th-largest Mars-crossing asteroid.

    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.

    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.

    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.

    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 in diameter. It was discovered on 9 October 1990, by astronomer Robert McNaught at the Siding Spring Observatory in Australia. The assumed S-type asteroid has a short rotation period of 3.8 hours. It was named after Australian amateur astronomer Anthony Beresford.

    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.

    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.

    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.

    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.

    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.

    <span class="mw-page-title-main">1508 Kemi</span>

    1508 Kemi, provisional designation 1938 UP, is an eccentric, carbonaceous asteroid and one of the largest Mars-crossers, approximately 17 kilometers in diameter. Discovered by Heikki Alikoski at Turku Observatory in 1938, the asteroid was later named after the Finnish town of Kemi and the Kemi River.

    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.

    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.

    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.

    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.

    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.

    <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.

    References

    1. 1 2 3 4 5 6 7 8 9 10 "JPL Small-Body Database Browser: 1474 Beira (1935 QY)" (2016-09-09 last obs.). Jet Propulsion Laboratory . Retrieved 21 October 2017.
    2. 1 2 3 Schmadel, Lutz D. (2007). "(1474) Beira". Dictionary of Minor Planet Names – (1474) Beira. Springer Berlin Heidelberg. p. 118. doi:10.1007/978-3-540-29925-7_1475. ISBN   978-3-540-00238-3.
    3. 1 2 3 "1474 Beira (1935 QY)". Minor Planet Center. Retrieved 21 October 2017.
    4. 1 2 3 4 5 6 "LCDB Data for (1474) Beira". Asteroid Lightcurve Database (LCDB). Retrieved 21 October 2017.
    5. 1 2 3 4 Alí-Lagoa, V.; Licandro, J.; Gil-Hutton, R.; Cañ; ada-Assandri, M.; Delbo', M.; et al. (June 2016). "Differences between the Pallas collisional family and similarly sized B-type asteroids". Astronomy and Astrophysics. 591: 11. Bibcode:2016A&A...591A..14A. doi: 10.1051/0004-6361/201527660 . hdl: 11336/63614 . Retrieved 21 October 2017.
    6. 1 2 3 4 Alí-Lagoa, V.; de León, J.; Licandro, J.; Delbó, M.; Campins, H.; Pinilla-Alonso, N.; et al. (June 2013). "Physical properties of B-type asteroids from WISE data". Astronomy and Astrophysics. 554: 16. arXiv: 1303.5487 . Bibcode:2013A&A...554A..71A. doi:10.1051/0004-6361/201220680 . Retrieved 21 October 2017.
    7. 1 2 3 4 Alí-Lagoa, V.; Delbo', M. (July 2017). "Sizes and albedos of Mars-crossing asteroids from WISE/NEOWISE data" (PDF). Astronomy and Astrophysics. 603: 8. arXiv: 1705.10263 . Bibcode:2017A&A...603A..55A. doi:10.1051/0004-6361/201629917 . Retrieved 21 October 2017.
    8. 1 2 Strabla, Luca; Quadri, Ulisse; Girelli, Robert (April 2013). "Asteroid Observed from Bassano Bresciano Observatory 2012 August-September". The Minor Planet Bulletin. 40 (2): 83–84. Bibcode:2013MPBu...40...83S. ISSN   1052-8091 . Retrieved 21 October 2017.
    9. 1 2 Koff, Robert A. (June 2004). "Lightcurve photometry of Mars-crossing asteroids 1474 Beira and 3674 Erbisbuhl". The Minor Planet Bulletin. 31 (2): 33–34. Bibcode:2004MPBu...31...33K. ISSN   1052-8091 . Retrieved 21 October 2017.
    10. 1 2 Apostolovska, Gordana; Ivanova, Violeta; Borisov, Galin (June 2004). "Lightcurves and rotational periods of 1474 Beira, 1309 Hyperborea, and 2525 O'Steen". The Minor Planet Bulletin. 31 (2): 44–45. Bibcode:2004MPBu...31...44A. ISSN   1052-8091 . Retrieved 21 October 2017.
    11. ↑ Schmadel, Lutz D. (2009). "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) . Springer Berlin Heidelberg. p.  221. doi:10.1007/978-3-642-01965-4. ISBN   978-3-642-01964-7.
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