4031 Mueller

4031 Mueller
Discovery [1]
Discovered by C. Shoemaker
Discovery site Palomar Obs.
Discovery date 12 February 1985
Designations
MPC designation 4031 Mueller
Named after
 Jean Mueller
(astronomer)[2]
1985 CL · 1969 EN1
main-belt (inner) · Hungaria [3][4]
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 31.50 yr (11,506 days)
Aphelion 2.1293 AU
Perihelion 1.7392 AU
1.9342 AU
Eccentricity 0.1009
2.69 yr (983 days)
313.73°
0° 21m 59.04s / day
Inclination 18.910°
355.88°
69.375°
Physical characteristics
Dimensions 3.875±0.101 km[5][6]
5.56 km (calculated)[3]
2.9420±0.0002 h[7]
2.942±0.001 h[lower-alpha 1]
2.943±0.001 h[8]
2.944±0.001 h[9]
0.30 (assumed)[3]
0.3894±0.0782[5][6]
E [5] · X [3][10]
13.2[1][3]
13.34±0.29[10]
13.7[5]

    4031 Mueller, provisional designation 1985 CL, is a Hungaria asteroid from the inner regions of the asteroid belt, approximately 4 kilometers in diameter. It was discovered on 12 February 1985, by American astronomer Carolyn Shoemaker at Palomar Observatory, California.[11]

    Mueller is a member of the Hungaria family, which form the innermost dense concentration of asteroids in the Solar System.[4] The E-type asteroid is also classified as a X-type by PanSTARRS and by the LCDB.[3][10] It orbits the Sun at a distance of 1.7–2.1 AU once every 2 years and 8 months (983 days). Its orbit has an eccentricity of 0.10 and an inclination of 19° with respect to the ecliptic.[1] The body was first identified as 1969 EN1 at Crimea–Nauchnij on 13 March 1969, yet the observation remained unused for the asteroid's observation arc.[11]

    Four rotational light-curves for this asteroid were obtained from photometric observations made by American astronomer Brian D. Warner at his Palmer Divide Observatory (716) between 2008 and 2016. They all gave a concurring, well-defined rotation period of 2.942 to 2.944 hours with a brightness variation between 0.14 and 0.19 magnitude (U=3/3-/3-/3).[lower-alpha 1][7][8][9]

    According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the asteroid measures 3.9 kilometers in diameter and its surface has a high albedo of 0.389,[5][6] while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.30 and calculates a diameter of 5.56 kilometers, based on an absolute magnitude of 13.2.[3]

    The minor planet was named after American female astronomer Jean Mueller (b. 1950), discoverer of minor planets, comets and supernovae during the course of the Second Palomar Observatory Sky Survey (POSS II) using the Oschin Telescope at Palomar Observatory in the late 1980s and early 1990s.[2] Naming citation was published on 12 December 1989 (M.P.C. 15576).[12]

    References

    1. 1 2 Warner (2016) web-published rotation period of 2.942±0.001 hours with a brightness amplitude of 0.17 mag- LCDB quality code of 3. Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (4031) Mueller
    1. 1 2 3 4 "JPL Small-Body Database Browser: 4031 Mueller (1985 CL)" (2016-08-14 last obs.). Jet Propulsion Laboratory. Retrieved 15 November 2016.
    2. 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (4031) Mueller. Springer Berlin Heidelberg. p. 344. ISBN 978-3-540-00238-3. Retrieved 15 November 2016.
    3. 1 2 3 4 5 6 7 "LCDB Data for (4031) Mueller". Asteroid Lightcurve Database (LCDB). Retrieved 15 November 2016.
    4. 1 2 Spratt, Christopher E. (April 1990). "The Hungaria group of minor planets". Journal of the Royal Astronomical Society of Canada. 84 (2): 123–131. Bibcode:1990JRASC..84..123S. ISSN 0035-872X.
    5. 1 2 3 4 5 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results" (PDF). The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407Freely accessible. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 15 November 2016.
    6. 1 2 3 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal. 741 (2): 20. arXiv:1109.4096Freely accessible. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. Retrieved 15 November 2016.
    7. 1 2 Warner, Brian D. (April 2009). "Asteroid Lightcurve Analysis at the Palmer Divide Observatory: 2008 September-December". The Minor Planet Bulletin. 36 (2): 70–73. Bibcode:2009MPBu...36...70W. ISSN 1052-8091. Retrieved 15 November 2016.
    8. 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 15 November 2016.
    9. 1 2 Warner, Brian D. (July 2012). "Asteroid Lightcurve Analysis at the Palmer Divide Observatory: 2011 December - 2012 March". The Minor Planet Bulletin. 39 (3): 158–167. Bibcode:2012MPBu...39..158W. ISSN 1052-8091. Retrieved 15 November 2016.
    10. 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:1506.00762Freely accessible. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 15 November 2016.
    11. 1 2 "4031 Mueller (1985 CL)". Minor Planet Center. Retrieved 15 November 2016.
    12. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 15 November 2016.

    External links

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