3868 Mendoza

3868 Mendoza, provisional designation 4575 P-L is a stony Vestian asteroid and binary system from the inner regions of the asteroid belt, approximately 9 kilometers in diameter. It was discovered on 24 September 1960, by astronomers Cornelis Johannes van Houten, Ingrid van Houten-Groeneveld and Tom Gehrels at Palomar Observatory.[13]

3868 Mendoza
Discovery [1]
Discovered byC. J. van Houten
I. van Houten G.
T. Gehrels
Discovery sitePalomar Obs.
Discovery date24 September 1960
Designations
(3868) Mendoza
Named after
Eugenio Mendoza
(Mexican astronomer)[2]
4575 P-L · 1935 SA1
1952 HV3 · 1953 TD2
1977 KD1
main-belt · Vesta [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc62.81 yr (22,941 days)
Aphelion2.5649 AU
Perihelion2.1032 AU
2.3341 AU
Eccentricity0.0989
3.57 yr (1,302 days)
353.29°
0° 16m 35.04s / day
Inclination8.1076°
171.57°
186.20°
Known satellites1[4][5][6]
Physical characteristics
Dimensions8.628±0.157 km[7]
6.37±0.27 km[8]
9.351±0.049 km[9]
9.396 km[10]
9.40 km (taken)[3]
2.77082±0.00005 h[4]
2.77090±0.00005 h[5]
2.77099±0.00002 h[3]
2.77103±0.00003 h[11]
0.1621±0.0288[9]
0.1649[10]
0.218±0.032[7]
0.436±0.076[8]
S [3]
12.30±0.04 (R)[5] · 12.30±0.02 (R)[4] 12.5[1][8] · 12.6[1] · 12.70±0.37[12] · 12.71±0.04[3][10] · 12.75[9]

    Orbit and characterization

    Mendoza orbits the Sun at a distance of 2.1–2.6 AU once every 3 years and 7 months (1,302 days). Its orbit has an eccentricity of 0.10 and an inclination of 8° with respect to the ecliptic.[1]

    Satellite

    In 2009, a minor-planet moon was discovered. It is provisionally designated S/2009 (3868) 1. The satellite measures 2.01±0.18 km in diameter and orbits Mendoza in a little more than a day.[4][5][6]

    Palomar–Leiden

    The survey designation "P-L" stands for Palomar–Leiden, named after Palomar Observatory and Leiden Observatory, which collaborated on the fruitful Palomar–Leiden survey in the 1960s. Gehrels used Palomar's Samuel Oschin telescope (also known as the 48-inch Schmidt Telescope), and shipped the photographic plates to Ingrid and Cornelis van Houten at Leiden Observatory where astrometry was carried out. The trio are credited with the discovery of several thousand asteroid discoveries.[14]

    Diameter and albedo

    According to the survey carried out by NASA's Wide-field Infrared Survey Explorer (WISE) with its subsequent NEOWISE mission, Mendoza measures between 8.628 and 9.351 kilometers in diameter and its surface has an albedo between 0.1621 and 0.436.[7][8][9] The Collaborative Asteroid Lightcurve Link adopts Petr Pravec's revised WISE data, that is, an albedo of 0.1649 and a rounded diameter of 9.40 kilometers with an absolute magnitude of 12.71.[3][10]

    Naming

    This minor planet was named in honor of Mexican astronomer Eugenio Mendoza (born 1928), expert in photometry and spectroscopy, member of the IAU and teacher at several Mexican universities.[2][15] The approved naming citation was published by the Minor Planet Center on 1 September 1993 (M.P.C. 22499).[16]

    References
    1. "JPL Small-Body Database Browser: 3868 Mendoza (4575 P-L)" (2016-07-31 last obs.). Jet Propulsion Laboratory. Retrieved 16 June 2017.
    2. Schmadel, Lutz D. (2007). "(3868) Mendoza". Dictionary of Minor Planet Names – (3868) Mendoza. Springer Berlin Heidelberg. p. 328. doi:10.1007/978-3-540-29925-7_3857. ISBN 978-3-540-00238-3.
    3. "LCDB Data for (3868) Mendoza". Asteroid Lightcurve Database (LCDB). Retrieved 16 June 2017.
    4. Pravec, P.; Scheirich, P.; Vokrouhlický, D.; Harris, A. W.; Kusnirák, P.; Hornoch, K.; et al. (March 2012). "Binary asteroid population. 2. Anisotropic distribution of orbit poles of small, inner main-belt binaries". Icarus. 218 (1): 125–143. Bibcode:2012Icar..218..125P. doi:10.1016/j.icarus.2011.11.026. Retrieved 16 June 2017.
    5. Oey, J.; Pravec, P.; Kusnirak, P.; Hornoch, K.; Brinsfield, J.; Chiorny, V.; et al. (June 2009). "(3868) Mendoza". Central Bureau Electronic Telegrams. 1835 (1835): 1. Bibcode:2009CBET.1835....1O. Retrieved 16 June 2017.
    6. Johnston, Robert (21 September 2014). "(3868) Mendoza". johnstonsarchive.net. Retrieved 16 June 2017.
    7. 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 16 June 2017.
    8. 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 16 June 2017.
    9. 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.
    10. Pravec, Petr; Harris, Alan W.; Kusnirák, Peter; Galád, Adrián; Hornoch, Kamil (September 2012). "Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations". Icarus. 221 (1): 365–387. Bibcode:2012Icar..221..365P. doi:10.1016/j.icarus.2012.07.026. Retrieved 16 June 2017.
    11. Oey, Julian; Masi, G.; Mallia, F.; Tagliaferri, U.; Higgins, David; Durkee, Russell I.; et al. (June 2007). "Rotation Period and Amplitude Change of Minor Planet 3868 Mendoza". The Minor Planet Bulletin. 34 (2): 39–40. Bibcode:2007MPBu...34...39O. ISSN 1052-8091. Retrieved 16 June 2017.
    12. 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 16 June 2017.
    13. "3868 Mendoza (4575 P-L)". Minor Planet Center. Retrieved 16 June 2017.
    14. "Minor Planet Discoverers". Minor Planet Center. 11 June 2017. Retrieved 16 June 2017.
    15. "V. Eugenio E. Mendoza". International Astronomical Union. January 2015. Retrieved 10 October 2015.
    16. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 16 June 2017.

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