5481 Kiuchi

Last updated

5481 Kiuchi
Discovery  [1]
Discovered by K. Endate
K. Watanabe
Discovery site Kitami Obs.
Discovery date15 February 1990
Designations
(5481) Kiuchi
Named after
Tsuruhiko Kiuchi
(Japanese amateur astronomer) [2]
1990 CH ·1970 SR
main-belt  · Vesta   [3]
Orbital characteristics   [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 46.14 yr (16,851 days)
Aphelion 2.4858 AU
Perihelion 2.1936 AU
2.3397 AU
Eccentricity 0.0624
3.58 yr (1,307 days)
194.33°
0° 16m 31.44s / day
Inclination 5.9569°
326.10°
250.69°
Known satellites 1 (Ds/Dp 0.33, P: 20.90 h) [4]
Physical characteristics
Mean diameter
3.86  km (calculated) [5]
3.6196±0.0002  h [4] [6]
0.40 (assumed) [5]
V   [5] [7]
12.98±0.1(R) [4]  ·13.4 [1]  ·13.676±0.062 [5] [8]  ·13.73±0.29 [7]

    5481 Kiuchi, provisional designation 1990 CH, is a bright binary [4] Vestian asteroid from the inner regions of the asteroid belt, approximately 4 kilometers (2.5 miles) in diameter. It was discovered on 15 February 1990, by Japanese astronomers Kin Endate and Kazuro Watanabe at Kitami Observatory in Hokkaidō, Japan, and named after their colleague Tsuruhiko Kiuchi. [2] [9] The V-type asteroid has a rotation period of 3.6 hours. [5]

    Contents

    Family and orbit

    Kiuchi is a bright core member of the Vesta family, [3] one of the main-belt's largest families. It orbits the Sun in the inner main-belt at a distance of 2.2–2.5  AU once every 3 years and 7 months (1,307 days). Its orbit has an eccentricity of 0.06 and an inclination of 6° with respect to the ecliptic. [1] It was first identified as 1970 SR at Crimea–Nauchnij in 1970, extending the body's observation arc by 20 years prior to its official discovery observation at Kitami. [9]

    Naming

    This minor planet was named in honor of Japanese amateur astronomer and discoverer of comets, Tsuruhiko Kiuchi (born 1954), who is known for the rediscovery of the periodic Perseid Comet Swift–Tuttle, a previously lost comet (also see naming citations for 5035 Swift and 5036 Tuttle). Based on a prediction by Brian Marsden, Kiuchi made this rediscovery in 1992, using only binoculars. [2] The approved naming citation was published by the Minor Planet Center on 1 September 1993 ( M.P.C. 22510). [10]

    Binary asteroid

    Satellite

    In March 2008, a lightcurve of Kiuchi was obtained from photometric observations by astronomers Peter Kušnirák and Petr Pravec at Ondřejov Observatory in the Czech Republic, by Julian Oey at Leura Observatory, Australia, by Robert Stephens at Goat Mountain, California, by Mark Husárik at Skalnaté pleso Observatory, Slovakia, and by Judit Györgyey Ries at McDonald Observatory, Texas.

    These photometric observations revealed, that Kiuchi is a synchronous binary asteroid with a minor-planet moon orbiting it every 20.90 hours based on mutual eclipsing and occultation events. The satellite's diameter is about a third of that of Kiuchi, which translates into 1.3 kilometers (secondary-to-primary mean-diameter ratio of 0.33±0.02). [4]

    Primary

    According to the surveys carried out by PanSTARRS, Kiuchi is a bright V-type asteroid. [7] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.40 and calculates a diameter of 3.86 kilometers, using an absolute magnitude of 13.676 from Petr Pravec's revised WISE data. [5]

    Kiuchi itself has a rotation period of 3.6196±0.0002 hours with a small brightness variation of 0.1 magnitude, indicating a nearly spheroidal shape ( U=n.a. ). [4] Photometric follow-up observations by Petr Pravec confirmed the results in 2013 and 2016, giving a period of 3.6198 and 3.6196 hours with an amplitude of 0.08 and 0.1 magnitude, and an orbital period for the satellite of 20.9 and 20.9062 hours, respectively ( U=3/n.a. ). [6] [lower-alpha 1]

    Notes

    1. ↑ Pravec (2013) web: rotation period 3.6198±0.0003 hours with a brightness amplitude of 0.08 mag. Summary figures for (5481) Kiuchi at Collaborative Asteroid Lightcurve Link (CALL)

    Related Research Articles

    (9992) 1997 TG19 is a stony asteroid and eccentric Mars-crosser, approximately 4 kilometers in diameter. It was discovered on 8 October 1997, by Japanese astronomers Tetsuo Kagawa and Takeshi Urata at Gekko Observatory near Shizuoka, Japan.

    1717 Arlon, provisional designation 1954 AC, is a binary Florian asteroid from the inner regions of the asteroid belt, approximately 8.5 kilometers in diameter.

    6084 Bascom, provisional designation 1985 CT, is a binary Phocaea asteroid from the inner regions of the asteroid belt, approximately 6.3 kilometers in diameter. It was discovered on 12 February 1985, by American astronomer couple Carolyn and Eugene Shoemaker at Palomar Observatory in California. It is named after American geologist Florence Bascom. Its satellite measures approximately 2.3 kilometers and has an orbital period of 43.51 hours.

    1806 Derice, provisional designation 1971 LC, is a stony Flora asteroid from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. Discovered on 13 June 1971, at the Bickley site of the Perth Observatory in Western Australia, it was the first discovery of a minor planet ever made in Oceania. The asteroid was named after the wife of Dennis Harwood, staff member at Bickley.

    <span class="mw-page-title-main">1338 Duponta</span>

    1338 Duponta, provisional designation 1934 XA, is a stony Florian asteroid and synchronous binary system from the inner regions of the asteroid belt, approximately 7.8 kilometers in diameter.

    9260 Edwardolson, provisional designation 1953 TA1, is a Florian binary asteroid from the inner regions of the asteroid belt, approximately 4.1 kilometers in diameter. It was discovered on 8 October 1953, by Indiana University during its Indiana Asteroid Program at Goethe Link Observatory in Brooklyn, Indiana, United States. It was named for American astronomer Edward Olson.

    1777 Gehrels, also designated 4007 P-L, is a stony asteroid from the middle region of the asteroid belt, approximately 13 kilometers in diameter. It was discovered during the Palomar–Leiden survey in 1960, and named for astronomer Tom Gehrels, one of the survey's principal investigators and credited discoverer.

    5474 Gingasen, provisional designation 1988 XE1, is a Vestian asteroid and suspected binary system from the inner regions of the asteroid belt, approximately 6 kilometers in diameter.

    4951 Iwamoto, provisional designation 1990 BM, is a stony, synchronous binary asteroid and slow rotator from the inner regions of the asteroid belt, approximately 5.5 kilometers in diameter. It was discovered on 21 January 1990, by Japanese astronomers Yoshikane Mizuno and Toshimasa Furuta at Kani Observatory in Japan.

    5905 Johnson, provisional designation 1989 CJ1, is a Hungaria asteroid and synchronous binary system from the innermost regions of the asteroid belt, approximately 4 kilometers (2.5 miles) in diameter. It was discovered on 11 February 1989, by American astronomer Eleanor Helin at Palomar Observatory in California, United States. Its satellite measures approximately 1.6 km (1 mi) in diameter and orbits its primary every 21.8 hours. It was named after American astronomer and engineer Lindley N. Johnson.

    1830 Pogson, provisional designation 1968 HA, is a stony Florian asteroid and an asynchronous binary system from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 17 April 1968, by Swiss astronomer Paul Wild at the Zimmerwald Observatory near Bern, Switzerland. The S-type asteroid has a rotation period 2.6 of hours. It was named for English astronomer Norman Pogson. The discovery of its 2.5-kilometer sized companion was announced in May 2007.

    2815 Soma, provisional designation 1982 RL, is a binary Florian asteroid from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 15 September 1982, by American astronomer Edward Bowell at Lowell's Anderson Mesa Station in Flagstaff, Arizona, in the United States. It is named for the mechanical puzzle Soma cube.

    4786 Tatianina, provisional designation 1985 PE2, is a bright background asteroid and synchronous binary system from the inner regions of the asteroid belt, approximately 3.4 kilometers (2.1 miles) in diameter. It was discovered on 13 August 1985, by Soviet astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula. It was named after Tatiana Somova, a friend of the discoverer. The E-/Xc-subtype has a short rotation period of 2.9 hours. Its sub-kilometer minor-planet moon was discovered on 20 March 2006 and announced the following month.

    2044 Wirt, provisional designation 1950 VE, is a binary Phocaea asteroid and Mars-crosser, approximately 6.7 kilometers in diameter. The minor-planet moon has an estimated diameter of 1.89 kilometer.

    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.

    15268 Wendelinefroger, provisional designation 1990 WF3, is a stony, spheroidal, and binary Nysian asteroid from the inner regions of the asteroid belt, approximately 3.4 kilometers in diameter.

    (31345) 1998 PG is an eccentric, stony asteroid and binary system, classified as near-Earth object of the Amor group of asteroids, approximately 900 meters in diameter. It minor-planet moon, S/2001 (31345) 1, has an estimated diameter of 270 meters.

    32008 Adriángalád (provisional designation 2000 HM53) is a background asteroid and synchronous binary system from the inner regions of the asteroid belt, approximately 4 kilometers (2.5 miles) in diameter. It was discovered on 29 April 2000, by astronomers with the LINEAR program at Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico, in the United States. The V-type asteroid has a rotation period of 3.0 hours. It was named for Slovak astronomer Adrián Galád. Its 1.6-kilometer sized minor-planet moon was discovered in August 2007.

    (15700) 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 "JPL Small-Body Database Browser: 5481 Kiuchi (1990 CH)" (2016-11-15 last obs.). Jet Propulsion Laboratory . Retrieved 4 July 2017.
    2. 1 2 3 Schmadel, Lutz D. (2007). "(5481) Kiuchi". Dictionary of Minor Planet Names – (5481) Kiuchi. Springer Berlin Heidelberg. p. 468. doi:10.1007/978-3-540-29925-7_5245. ISBN   978-3-540-00238-3.
    3. 1 2 "Asteroid (5481) Kiuchi – Proper elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 23 July 2018.
    4. 1 2 3 4 5 6 Kusnirak, P.; Pravec, P.; Oey, J.; Stephens, R.; Husarik, M.; Ries, J. (April 2008). "(5481) Kiuchi". Central Bureau Electronic Telegrams. 1339 (1339): 1. Bibcode:2008CBET.1339....1K . Retrieved 20 March 2017.
    5. 1 2 3 4 5 6 "LCDB Data for (5481) Kiuchi". Asteroid Lightcurve Database (LCDB). Retrieved 20 March 2017.
    6. 1 2 Pravec, P.; Scheirich, P.; Kusnirák, P.; Hornoch, K.; Galád, A.; Naidu, S. P.; et al. (March 2016). "Binary asteroid population. 3. Secondary rotations and elongations". Icarus. 267: 267–295. Bibcode:2016Icar..267..267P. doi: 10.1016/j.icarus.2015.12.019 .
    7. 1 2 3 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 . Retrieved 20 March 2017.
    8. ↑ 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 . Retrieved 20 March 2017.
    9. 1 2 "5481 Kiuchi (1990 CH)". Minor Planet Center. Retrieved 20 March 2017.
    10. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 20 March 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.