5080 Oja

Last updated

5080 Oja
Discovery  [1]
Discovered by C.-I. Lagerkvist
Discovery site Kvistaberg Stn.
Discovery date2 March 1976
Designations
(5080) Oja
Named after
 Tarmo Oja   [1]
(Estonian–Swedish astronomer)
1976 EB ·1951 WO
1951 XA ·1988 XH
A924 SB
main-belt   [1] [2]  ·(inner)
Flora   [3] [4]  ·Matterania
Orbital characteristics   [2]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc 92.68 yr (33,852 d)
Aphelion 2.5215 AU
Perihelion 1.9617 AU
2.2416 AU
Eccentricity 0.1249
3.36 yr (1,226 d)
255.46°
0° 17m 37.32s / day
Inclination 5.4503°
344.79°
89.320°
Physical characteristics
Mean diameter
6.94±1.26  km [5]
7.766±0.080 km [6]
8.377 km [7]
8.38 km(taken) [3]
8.399±0.049 km [8]
7.2220±0.0004  h [9]
7.2222±0.00003 h [lower-alpha 1]
7.7 h [10]
0.1573 [7]
0.1741±0.0430 [8]
0.218±0.021 [6]
0.31±0.15 [5]
S   [11]  · S (assumed) [3]
12.52±0.04(R) [lower-alpha 1]  ·12.6 [2]
12.9 [8]  ·12.97 [5]  ·13.01 [3]
13.01±0.064 [7]
13.15±0.12 [11]

    5080 Oja, provisional designation 1976 EB, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 2 March 1976, by astronomer Claes-Ingvar Lagerkvist at the Kvistaberg Station of the Uppsala Observatory in Sweden. In 1992, it was named after Estonian–Swedish astronomer Tarmo Oja. [1] The S-type asteroid has a rotation period of 7.222 hours. [3]

    Contents

    Orbit and classification

    Oja is a member of the Flora family ( 402 ), [3] [4] a giant asteroid family and the largest family of stony asteroids in the main-belt. [12] It orbits the Sun in the inner main-belt at a distance of 2.0–2.5  AU once every 3 years and 4 months (1,226 days; semi-major axis of 2.24 AU). Its orbit has an eccentricity of 0.12 and an inclination of 5° with respect to the ecliptic. [2]

    On 29 September 1924, the asteroid was first observed as A924 SB at Heidelberg Observatory, where the body's observation arc begins two days later on 1 October 1924. [1]

    Physical characteristics

    Oja has been characterized as a common, stony S-type asteroid by Pan-STARRS ' photometric survey, in line with the overall spectral type of the Flora family. [12] : 23 

    Rotation period

    In January 2006, a rotational lightcurve of Oja was obtained from photometric observations by an international collaboration of astronomers including Petr Pravec at Ondřejov Observatory and Donald Pray at Carbuncle Hill Observatory ( 912 ). The consolidated lightcurve analysis gave a rotation period of 7.222 hours and a brightness variation between 0.31 and 0.39 magnitude ( U=3/3 ). [9] [lower-alpha 1] The result supersedes a period of 7.7 hours obtained by the discoverer (Claes-Ingvar Lagerkvist) in March 1976 ( U=2 ). [10]

    Diameter and albedo

    According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Oja measures between 6.94 and 8.399 kilometers in diameter and its surface has an albedo between 0.1573 and 0.31. [5] [6] [7] [8] The Collaborative Asteroid Lightcurve Link adopts an albedo of 0.1573 from Pravec's revised WISE data and uses a diameter of 8.38 kilometers based on an absolute magnitude of 13.01. [3]

    Naming

    This minor planet was named after the Swedish astronomer of Estonian descent Tarmo Oja (born 1934), who was a professor in astronomy at Uppsala University and the director of the discovering Kvistaberg Station during 1970–1999. His research included the structure of galaxies and variable stars. The official naming citation was published by the Minor Planet Center on 14 July 1992 ( M.P.C. 20522). [13]

    Notes

    1. 1 2 3 Pravec (2006) web: rotation period 7.2222±0.00003 hours and a brightness amplitude of 0.39±0.01 mag in the R-band. Observation period from 31 December 2005 to 10 January 2006. Quality Code is 3. Summary figures at the LCDB and Pravec, P.; Wolf, M.; Sarounova, L. (2016) with data sheet

    Related Research Articles

    <span class="mw-page-title-main">4923 Clarke</span> Asteroid

    4923 Clarke, provisional designation 1981 EO27, is a stony background asteroid from the inner regions of the asteroid belt, approximately 3.5 kilometers (2.2 miles) in diameter. It was discovered on 2 March 1981, by American astronomer Schelte Bus at the Siding Spring Observatory in Australia. The spheroidal S-type asteroid has a rotation period of 3.14 hours. It was named after British science fiction writer Arthur C. Clarke. On the same night, Schelte Bus also discovered 5020 Asimov.

    1123 Shapleya, provisional designation 1928 ST, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 11 kilometers in diameter. It was discovered on 21 September 1928, by Russian astronomer Grigory Neujmin at Simeiz Observatory on the Crimean peninsula. It was named after American astronomer Harlow Shapley.

    <span class="mw-page-title-main">1652 Hergé</span>

    1652 Hergé, provisional designation 1953 PA, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 9 kilometers in diameter. It was discovered on 9 August 1953, by Belgian astronomer Sylvain Arend at the Royal Observatory of Belgium in Uccle, Belgium. It was later named after Belgian cartoonist Hergé.

    2033 Basilea, provisional designation 1973 CA, is a stony asteroid from the inner regions of the asteroid belt, approximately 6 kilometers in diameter. It was discovered on 6 February 1973, by astronomer Paul Wild at the Zimmerwald Observatory near Bern, Switzerland. The asteroid was named for the Swiss city of Basel.

    29292 Conniewalker, provisional designation 1993 KZ1, is a bright, stony Phocaea asteroid and slow tumbler from the inner regions of the asteroid belt, approximately 4.6 kilometers in diameter. It was discovered on 24 May 1993, by American astronomer Carolyn Shoemaker and Canadian astronomer David Levy at the Palomar Observatory in California, United States.

    1991 Darwin, provisional designation 1967 JL, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 5 kilometers in diameter.

    1736 Floirac, provisional designation 1967 RA, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 8.7 kilometer in diameter.

    1722 Goffin, provisional designation 1938 EG, is a stony asteroid from the central region of the asteroid belt, approximately 10.3 kilometers in diameter.

    8116 Jeanperrin, provisional designation 1996 HA15, is a Florian asteroid and synchronous binary system from the inner regions of the asteroid belt, approximately 4.8 kilometers (3 miles) in diameter. It was discovered on 17 April 1996, by Belgian astronomer Eric Elst at the La Silla Observatory in northern Chile. The likely stony S-type asteroid has a rotation period of 3.62 hours and a nearly round shape. It was named for French physicist and Nobel laureate Jean Baptiste Perrin. A minor-planet moon, a third the size of its primary, was discovered in 2007.

    19763 Klimesh, provisional designation 2000 MC, is a stony Phocaea asteroid and slow rotator from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. Discovered by NEAT at Haleakala Observatory in 2000, the asteroid was named for NEAT's software specialist Matthew Klimesh.

    3066 McFadden, provisional designation 1984 EO, is a stony background asteroid from the central regions of the asteroid belt, approximately 15 kilometers in diameter. It was discovered on 1 March 1984, by American astronomer Edward Bowell at the Anderson Mesa Station near Tucson, Arizona. It was named for American planetary scientist Lucy-Ann McFadden. The assumed S-type asteroid has a rotation period of 13.8 hours.

    1739 Meyermann, provisional designation 1939 PF, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 7.5 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at Heidelberg Observatory on 15 August 1939. It was later named in memory of astronomer Bruno Meyermann.

    15350 Naganuma, provisional designation 1994 VB2, is a stony background asteroid from the inner regions of the asteroid belt, approximately 4.3 kilometers (2.7 miles) in diameter. It was discovered on 3 November 1994, by Japanese astronomers Yoshio Kushida and Osamu Muramatsu at the Yatsugatake South Base Observatory. The likely S-type asteroid has a rotation period of 2.5 hours. It was named for the town of Naganuma in northern Japan.

    2648 Owa, provisional designation 1980 VJ, is a background asteroid from the Flora region of the inner asteroid belt, approximately 6 kilometers in diameter. It was discovered on 8 November 1980, by American astronomer Edward Bowell at the Anderson Mesa Station near Flagstaff, Arizona, in the United States. The presumably S-type asteroid has a rotation period of 3.56 hours. It was named for the word "rock" in the Native American Hopi language.

    1405 Sibelius, provisional designation 1936 RE, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 12 September 1936, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland. The asteroid was named after composer Jean Sibelius.

    4608 Wodehouse, provisional designation 1988 BW3, is a background asteroid and suspected trojan of Ceres from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 19 January 1988, by Belgian astronomer Henri Debehogne at ESO's La Silla Observatory in northern Chile. The asteroid was named after English writer P. G. Wodehouse.

    4760 Jia-xiang, provisional designation 1981 GN1, is a background asteroid from the inner regions of the asteroid belt, approximately 5 kilometers (3 miles) in diameter. It was discovered on 1 April 1981, by astronomers at Harvard University's Oak Ridge Observatory in Massachusetts, United States. The presumed stony S-type asteroid was named after Chinese astronomer Zhang Jiaxiang. It has a rotation period of 14.96 hours.

    2195 Tengström, provisional designation 1941 SP1, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 27 September 1941, by Finnish astronomer Liisi Oterma at Turku Observatory in Southwest Finland, and named for Swedish geodesist Erik Tengström.

    3982 Kastelʹ, provisional designation 1984 JP1, is a Florian asteroid and a suspected binary system from the inner regions of the asteroid belt, approximately 6.9 kilometers in diameter.

    10208 Germanicus, provisional designation 1997 QN1, is a stony Florian asteroid and binary system from the inner regions of the asteroid belt, approximately 3.5 kilometers in diameter.

    References

    1. 1 2 3 4 5 "5080 Oja (1976 EB)". Minor Planet Center. Retrieved 20 March 2018.
    2. 1 2 3 4 "JPL Small-Body Database Browser: 5080 Oja (1976 EB)" (2017-06-05 last obs.). Jet Propulsion Laboratory . Retrieved 20 March 2018.
    3. 1 2 3 4 5 6 7 "LCDB Data for (5080) Oja". Asteroid Lightcurve Database (LCDB). Retrieved 20 March 2018.
    4. 1 2 "Asteroid 5080 Oja – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 27 October 2019.
    5. 1 2 3 4 Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T.; et al. (September 2016). "NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos". The Astronomical Journal. 152 (3): 12. arXiv: 1606.08923 . Bibcode:2016AJ....152...63N. doi: 10.3847/0004-6256/152/3/63 .
    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 4 Pravec, Petr; Harris, Alan W.; Kusnirák, Peter; Galád, Adrián; Hornoch, Kamil (September 2012). "Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations". Icarus. 221 (1): 365–387. Bibcode:2012Icar..221..365P. doi:10.1016/j.icarus.2012.07.026.
    8. 1 2 3 4 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. arXiv: 1109.6407 . Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90.
    9. 1 2 Pray, Donald P.; Galad, Adrian; Gajdos, Stefan; Vilagi, Jozef; Cooney, Walt; Gross, John; et al. (December 2006). "Lightcurve analysis of asteroids 53, 698, 1016, 1523, 1950, 4608, 5080 6170, 7760, 8213, 11271, 14257, 15350 and 17509". The Minor Planet Bulletin. 33 (4): 92–95. Bibcode:2006MPBu...33...92P. ISSN   1052-8091.
    10. 1 2 Lagerkvist, C.-I. (March 1978). "Photographic photometry of 110 main-belt asteroids". Astronomy and Astrophysics Supplement Series. 31: 361–381. Bibcode:1978A&AS...31..361L.
    11. 1 2 Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv: 1506.00762 . Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007.
    12. 1 2 Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. arXiv: 1502.01628 . Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN   9780816532131.
    13. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 20 March 2018.
    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.