5430 Luu

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5430 Luu
Discovery  [1]
Discovered by C. Shoemaker
E. M. Shoemaker
Discovery site Palomar Obs.
Discovery date12 May 1988
Designations
(5430) Luu
Named after
 Jane Luu
(American astronomer) [2]
1988 JA1 ·1970 OL
main-belt  · Phocaea   [3] [4]
Orbital characteristics   [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 46.86 yr (17,114 days)
Aphelion 2.8929 AU
Perihelion 1.8356 AU
2.3642 AU
Eccentricity 0.2236
3.64 yr (1,328 days)
20.073°
0° 16m 15.96s / day
Inclination 23.894°
123.00°
122.11°
Physical characteristics
Dimensions6.508±0.029 km [5]
6.659±0.043 [6]
7.63 km (calculated) [3]
8.05±0.22 km [7]
8.27±0.25 km [8]
4.44±0.05 h [9]
13.55±0.02 h [10]
0.212±0.012 [7]
0.215±0.036 [8] [6]
0.23 (assumed) [3]
0.3826±0.0839 [5]
S   [3]
12.6 [5]  ·12.70 [8]  ·12.8 [1] [3] [7]  ·13.45±0.87 [11]

    5430 Luu, provisional designation 1988 JA1, is a stony Phocaea asteroid from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 12 May 1988, by American astronomer couple Carolyn and Eugene Shoemaker at Palomar Observatory, California, and later named after astronomer Jane Luu. [2] [12]

    Contents

    Orbit and classification

    Luu is a member of the Phocaea family ( 701 ). [4] It orbits the Sun in the inner main-belt at a distance of 1.8–2.9  AU once every 3 years and 8 months (1,328 days). Its orbit has an eccentricity of 0.22 and an inclination of 24° with respect to the ecliptic. [1] The first precovery was taken at Crimea–Nauchnij in 1970, extending the asteroid's observation arc by 18 years prior to its discovery. [12]

    Physical characteristics

    Luu has been characterized as a common S-type asteroid. [3]

    Rotation period

    In April 2006, photometric observations of Luu collected by American astronomer Brian D. Warner at his Palmer Divide Station, Colorado, show a rotation period of 13.55±0.02 hours with a brightness variation of 0.06±0.02 magnitude ( U=2 ). [10] A second, tentative lightcurve was obtained by French astronomer René Roy in July 2007. It gave a period of 4.44±0.05 hours and an amplitude of 0.05 in magnitude ( U=2- ). [9]

    Diameter and albedo

    According to the surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Luu measures 6.5 and 8.3 kilometers in diameter and its surface has an albedo between 0.21 and 0.26. [5] [6] [7] [8]

    The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.23 – derived from 25 Phocaea, the family's most massive member and namesake – and calculates a diameter of 7.6 kilometers with an absolute magnitude of 12.8. [3]

    Naming

    This minor planet is named in honor of Vietnamese-American astronomer Jane X. Luu (born 1963) for her research and discovering the first and subsequent members of the Kuiper Belt. [13] She also studied the physical properties of these bodies and the coma of potentially Extinct comets. [2] The approved naming citation was published by the Minor Planet Center on 1 July 1996 ( M.P.C. 27459). [14]

    Related Research Articles

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    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 5430 Luu (1988 JA1)" (2017-06-06 last obs.). Jet Propulsion Laboratory . Retrieved 20 June 2017.
    2. 1 2 3 Schmadel, Lutz D. (2007). "(5430) Luu". Dictionary of Minor Planet Names – (5430) Luu. Springer Berlin Heidelberg. p. 464. doi:10.1007/978-3-540-29925-7_5209. ISBN   978-3-540-00238-3.
    3. 1 2 3 4 5 6 7 "LCDB Data for (5430) Luu". Asteroid Lightcurve Database (LCDB). Retrieved 14 August 2016.
    4. 1 2 "Asteroid 5430 Luu – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 27 October 2019.
    5. 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 . Retrieved 14 August 2016.
    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 . Retrieved 5 December 2016.
    7. 1 2 3 4 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi: 10.1093/pasj/63.5.1117 . (online, AcuA catalog p. 153)
    8. 1 2 3 4 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (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 14 August 2016.
    9. 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (5430) Luu". Geneva Observatory . Retrieved 14 August 2016.
    10. 1 2 Warner, Brian D. (December 2006), "Asteroid lightcurve analysis at the Palmer Divide Observatory - March - June 2006", The Minor Planet Bulletin, 33 (4): 85–88, Bibcode:2006MPBu...33...85W.
    11. ↑ 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 14 August 2016.
    12. 1 2 "5430 Luu (1988 JA1)". Minor Planet Center. Retrieved 14 August 2016.
    13. ↑ John Keith Davies (2001). Beyond Pluto: Exploring the Outer Limits of the Solar System . Cambridge University Press. p.  219. ISBN   9781139428774 . Retrieved 1 June 2012. 5430 Luu.
    14. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 14 August 2016.
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