5474 Gingasen

5474 Gingasen
Discovery [1]
Discovered by T. Fujii
K. Watanabe
Discovery site Kitami Observatory
Discovery date 3 December 1988
Designations
MPC designation 5474 Gingasen
Named after
 Gingasen (Milky Way)
(railroad track)[2]
1988 XE1 · 1955 YK
1971 BO2
main-belt · Vestian [3]
Orbital characteristics [1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 16487 days (45.14 yr)
Aphelion 2.5445 AU (380.65 Gm)
Perihelion 2.2221 AU (332.42 Gm)
2.3833 AU (356.54 Gm)
Eccentricity 0.067619
3.68 yr (1343.9 d)
58.641°
0° 16m 4.368s / day
Inclination 6.1442°
246.98°
256.37°
Earth MOID 1.24441 AU (186.161 Gm)
Jupiter MOID 2.4907 AU (372.60 Gm)
Jupiter Tisserand parameter 3.526
Physical characteristics
Dimensions 5.05±0.48 km[4]
6.68 km (derived)[3]
3.6242 h (0.15101 d)[5]
2.91 h[6]
3.628±0.005 h[7]
3.6272±0.0015 h[8]
0.480±0.109[4]
0.20 (assumed)[3]
S [3]
13.0[1]

    5474 Gingasen, provisional designation 1988 XE1, is a Vestian binary[9] asteroid from the inner regions of the asteroid belt, about 5 kilometers in diameter. It was discovered on December 3, 1988 by Japanese amateur astronomers Tetsuya Fujii and Kazuro Watanabe at Kitami Observatory, Japan.[10]

    The stony S-type asteroid is a member of the Vesta family. It orbits the Sun at a distance of 2.2–2.5 AU once every 3 years and 8 months (1,344 days). Its orbit shows an eccentricity of 0.07 and is tilted by 6 degrees to the plane of the ecliptic. It has a rotation period of 3.6 hours[8] and a high albedo of 0.48.[4]

    A moon was discovered orbiting the asteroid in 2008.[9]

    The minor planet was named after a railroad track in Hokkaido. Gingasen means "Milky Way". This 150-km public railroad connects the island's eastern cities. Each station along the line is named for a constellation.[10]

    References

    1. 1 2 3 "JPL Small-Body Database Browser: 5474 Gingasen (1988 XE1)" (2015-04-30 last obs.). Jet Propulsion Laboratory. Retrieved 13 April 2016.
    2. ↑ Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (5832) Martaprincipe. Springer Berlin Heidelberg. p. 492. ISBN 978-3-540-29925-7. Retrieved December 2015.
    3. 1 2 3 4 "LCDB Data for (5474) Gingasen". Asteroid Lightcurve Database (LCDB). Retrieved December 2015.
    4. 1 2 3 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; Cabrera, M. S. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters 759 (1): 5. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved December 2015.
    5. ↑ Higgins, David; Pravec, Petr; Kusnirak, Peter; Hornoch, Kamil; Pray, Donald P.; Vilagi, Jozef; et al. (October 2008). "Asteroid Lightcurve Analysis of Suspected Binary Asteroids". The Minor Planet Bulletin 35 (4): 173–175. Bibcode:2008MPBu...35..173H. ISSN 1052-8091. Retrieved December 2015.
    6. ↑ Behrend, Raoul. "Asteroids and comets rotation curves – (5474) Gingasen". Geneva Observatory. Retrieved December 2015.
    7. ↑ Sada, Pedro V. (October 2008). "CCD Photometry of Three Short-period Asteroids from the Universidad de Monterry Observatory". The Minor Planet Bulletin 35 (4): 161–162. Bibcode:2008MPBu...35..161S. ISSN 1052-8091. Retrieved December 2015.
    8. 1 2 Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal 150 (3): 35. arXiv:1504.04041. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved December 2015.
    9. 1 2 Johnston, Robert. "(5474) Gingasen". johnstonsarchive.net. Retrieved 28 May 2015.
    10. 1 2 "5474 Gingasen (1988 XE1)". Minor Planet Center. Retrieved December 2015.

    External links


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