5175 Ables

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5175 Ables
Discovery  [1]
Discovered by C. S. Shoemaker
E. M. Shoemaker
Discovery site Palomar Obs.
Discovery date4 November 1988
Designations
(5175) Ables
Named after
Harold Ables
(American astronomer) [2]
1988 VS4 ·1990 KH
main-belt  · Hungaria   [3]
Orbital characteristics   [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 62.95 yr (22,993 days)
Aphelion 2.0438 AU
Perihelion 1.8908 AU
1.9673 AU
Eccentricity 0.0389
2.76 yr (1,008 days)
9.7153°
0° 21m 25.92s / day
Inclination 16.847°
234.51°
313.87°
Physical characteristics
Dimensions4.29±0.23 km [4]
5.31 km (calculated) [3]
5.697±0.024 km [5]
2.7976±0.0005 h [6]
2.798±0.001 h [7]
0.2897±0.0604 [5]
0.30 (assumed) [3]
0.505±0.074 [4]
E   [3]
13.3 [1] [3]  ·13.2 [5] [4]  ·13.83±0.37 [8]

    5175 Ables, provisional designation 1988 VS4, is a bright Hungaria asteroid from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered by American astronomers Carolyn and Eugene Shoemaker at the U.S. Palomar Observatory, California, on 4 November 1988. [9] It was named after American astronomer Harold Ables. [2]

    Contents

    Orbit and classification

    Ables is a member of the Hungaria family, which form the innermost dense concentration of asteroids in the Solar System.

    It orbits the Sun at a distance of 1.9–2.0  AU once every 2 years and 9 months (1,008 days). Its orbit has an eccentricity of 0.04 and an inclination of 17° with respect to the ecliptic. [1] A first precovery was obtained at Palomar Observatory in 1954, extending the asteroid's observation arc by 34 years prior to its official discovery observation. [9]

    Physical characteristics

    Ables has been characterized as a bright E-type asteroid. [3]

    Diameter and albedo

    Based on the surveys carried out by the NASA's space-based Wide-field Infrared Survey Explorer and its subsequent NEOWISE mission, Ables has an albedo of 0.29 and 0.51, with a corresponding diameter of 5.7 and 4.3 kilometers, respectively, [5] [4] while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.30 and calculates a diameter of 5.3 kilometers with an absolute magnitude of 13.3. [3]

    Lightcurves

    Between 2010 and 2014, three rotational lightcurves of Ables have been obtained by American astronomer Brian Warner at the Palmer Divide Station ( 714 ) in Colorado. The best result gave a short rotation period of 2.798 hours with a brightness variation of 0.10 magnitude ( U=3 ). [10] [7] [6]

    Naming

    This minor planet was named after American astronomer Harold D. Ables (born 1938). While director at the United States Naval Observatory Flagstaff Station (NOFS), he was responsible for the station's transition from photographic plates to CCD imaging. The body's name was suggested by the JPL Ephemeris Group and subsequently proposed by the discoverers. [2] The approved naming citation was published by the Minor Planet Center on 1 July 1996 (M.P.C. 27459). [11]

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    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 5175 Ables (1988 VS4)" (2017-05-05 last obs.). Jet Propulsion Laboratory . Retrieved 20 June 2017.
    2. 1 2 3 Schmadel, Lutz D. (2007). "(5175) Ables". Dictionary of Minor Planet Names – (5175) Ables. Springer Berlin Heidelberg. p. 445. doi:10.1007/978-3-540-29925-7_5021. ISBN   978-3-540-00238-3.
    3. 1 2 3 4 5 6 7 "LCDB Data for (5175) Ables". Asteroid Lightcurve Database (LCDB). Retrieved 27 April 2016.
    4. 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 13 January 2016.
    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 27 April 2016.
    6. 1 2 Warner, Brian D. (July 2014). "Asteroid Lightcurve Analysis at CS3-Palmer Divide Station: 2014 January-March". The Minor Planet Bulletin. 41 (3): 144–155. Bibcode:2014MPBu...41..144W. ISSN   1052-8091 . Retrieved 13 January 2016.
    7. 1 2 Warner, Brian D. (April 2014). "Asteroid Lightcurve Analysis at CS3-Palmer Divide Station: 2013 September-December". The Minor Planet Bulletin. 41 (2): 102–112. Bibcode:2014MPBu...41..102W. ISSN   1052-8091 . Retrieved 13 January 2016.
    8. ↑ 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 27 April 2016.
    9. 1 2 "5175 Ables (1988 VS4)". Minor Planet Center. Retrieved 27 April 2016.
    10. ↑ Warner, Brian D. (January 2011). "Lightcurve Analysis at the Palmer Divide Observatory: 2010 June-September". The Minor Planet Bulletin. 38 (1): 25–31. Bibcode:2011MPBu...38...25W. ISSN   1052-8091 . Retrieved 13 January 2016.
    11. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 27 April 2016.
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