5430 Luu

From Wikipedia, the free encyclopedia
Jump to: navigation, search
5430 Luu
Discovery [1]
Discovered by C. Shoemaker
E. M. Shoemaker
Discovery site Palomar Obs.
Discovery date 12 May 1988
Designations
MPC designation 5430 Luu
Named after
Jane Luu
(astronomer)[2]
1988 JA1 · 1970 OL
main-belt · Phocaea[3]
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 45.68 yr (16,685 days)
Aphelion 2.8933 AU
Perihelion 1.8351 AU
2.3642 AU
Eccentricity 0.2238
3.64 yr (1,328 days)
271.59°
0° 16m 15.96s / day
Inclination 23.898°
123.01°
122.16°
Physical characteristics
Dimensions 6.508±0.029 km[4]
7.63 km (calculated)[3]
8.05±0.22 km[5]
8.27±0.25 km[6]
4.44±0.05 h[7]
13.55±0.02 h[8]
0.212±0.012[5]
0.215±0.036[6]
0.23 (assumed)[3]
0.3826±0.0839[4]
S[3]
12.6[4]
12.70[6]
12.8[1][3][5]
13.45±0.87[9]

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.[10]

The S-type asteroid is a member of the Phocaea family. It orbits the Sun 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.[10]

In April 2006, photometric observations of this asteroid 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).[8] A second, tentative light-curve 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-).[7]

According to the surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the asteroid measures 6.5 and 8.3 kilometers in diameter and its surface has an albedo between 0.21 and 0.26.[4][5][6] 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.[3]

The minor planet is named in honor of Vietnamese-American astronomer Jane X. Luu (b. 1963) for her research and discovering the first and subsequent members of the Kuiper Belt.[11] She also studied the physical properties of these bodies and and the coma of potentially Extinct comets.[2] Naming citation was published on 1 July 1996 (M.P.C. 27459).[12]

References[edit]

  1. ^ a b c d "JPL Small-Body Database Browser: 5430 Luu (1988 JA1)" (2016-04-03 last obs.). Jet Propulsion Laboratory. Retrieved 14 August 2016. 
  2. ^ a b Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (5430) Luu. Springer Berlin Heidelberg. p. 464. ISBN 978-3-540-00238-3. Retrieved 14 August 2016. 
  3. ^ a b c d e f "LCDB Data for (5430) Luu". Asteroid Lightcurve Database (LCDB). Retrieved 14 August 2016. 
  4. ^ a b c d 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:1109.6407free to read. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 14 August 2016. 
  5. ^ a b c d 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. Retrieved 14 August 2016. 
  6. ^ a b c d 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:1209.5794free to read. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 14 August 2016. 
  7. ^ a b Behrend, Raoul. "Asteroids and comets rotation curves – (5430) Luu". Geneva Observatory. Retrieved 14 August 2016. 
  8. ^ a b 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. 
  9. ^ 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:1506.00762free to read. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 14 August 2016. 
  10. ^ a b "5430 Luu (1988 JA1)". Minor Planet Center. Retrieved 14 August 2016. 
  11. ^ John Keith Davies (2001). Beyond Pluto: Exploring the Outer Limits of the Solar System. Cambridge University Press. p. 219. Retrieved 2012-06-01. 
  12. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 14 August 2016. 

External links[edit]