6349 Acapulco

6349 Acapulco
Discovery [1]
Discovered by M. Koishikawa
Discovery site Sendai Astronomical Observatory (Ayashi Station)
Discovery date 8 February 1995
Designations
MPC designation 6349 Acapulco
Named after
 Acapulco (sister city)[2]
1995 CN1 · 1947 EC
1973 AH4 · 1973 CL
1988 SA1
main-belt · (middle) [3]
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 69.07 yr (25,227 days)
Aphelion 3.0380 AU
Perihelion 2.2933 AU
2.6656 AU
Eccentricity 0.1396
4.35 yr (1,590 days)
292.85°
0° 13m 35.04s / day
Inclination 10.792°
328.12°
236.71°
Physical characteristics
Dimensions 19.24±1.2 km (IRAS:5)[1]
20.429±0.206 km[4]
22.69±0.56 km[5]
12.35 km (calculated)[3]
4.3755±0.0020 h[6]
0.0757±0.010 (IRAS:5)[1]
0.0377±0.0066[4]
0.045±0.005[5]
0.10 (assumed)[3]
S [3]
12.3[1]
12.66[3]
12.2[4][5]
12.209±0.001 (R)[6]
12.18±0.54[7]

    6349 Acapulco, provisional designation 1995 CN1, is a asteroid from the middle region of the asteroid belt, approximately 20 kilometers in diameter. It was discovered on 8 February 1995, by Japanese astronomer Masahiro Koishikawa at the Ayashi Station of the Sendai Astronomical Observatory in the Tōhoku region of Japan.[8]

    The asteroid orbits the Sun at a distance of 2.3–3.0 AU once every 4 years and 4 months (1,590 days). Its orbit has an eccentricity of 0.14 and an inclination of 11° with respect to the ecliptic.[1] The first used precovery was taken at Palomar Observatory in 1953, extending the asteroid's observation arc by 42 years prior to its discovery.[8]

    A rotational light-curve of this asteroid was obtained from photometric observations made at the U.S. Palomar Transient Factory in September 2010. The light-curve gave a rotation period of 4.3755±0.0020 hours with a brightness amplitude of 0.18 in magnitude (U=2).[6] According to the surveys carried out by the Infrared Astronomical Satellite IRAS, as well as NASA's Wide-field Infrared Survey Explorer with its following NEOWISE mission, the asteroid measures between 19.2 and 22.7 kilometers in diameter, and its surface has an albedo in the range of 0.037 to 0.076.[1][4][5] The Collaborative Asteroid Lightcurve Link, however, classifies it as a S-type asteroid, assumes a higher albedo of 0.10, and hence calculates a smaller diameter of 12.4 kilometers.[3]

    The minor planet is named for the Mexican city of Acapulco, known for its major seaport, which is considered to be among the most beautiful ones in the world. Since 1973, Acapulco is the sister city of the Japanese city of Sendai, where the discovering observatory is located, and after which the minor planet 3133 Sendai is named. Hasekura Tsunenaga (1571–1622) – retainer of Date Masamune, who founded the city of Sendai – stopped by at Acapulco on his diplomatic mission to Rome.[2] Naming citation was published on 2 February 1999 (M.P.C. 33787).[9]

    References

    1. 1 2 3 4 5 6 7 "JPL Small-Body Database Browser: 6349 Acapulco (1995 CN1)" (2016-04-05 last obs.). Jet Propulsion Laboratory. Retrieved April 2016.
    2. 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (6349) Acapulco. Springer Berlin Heidelberg. p. 526. ISBN 978-3-540-00238-3. Retrieved April 2016.
    3. 1 2 3 4 5 6 "LCDB Data for (6349) Acapulco". Asteroid Lightcurve Database (LCDB). Retrieved April 2016.
    4. 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 April 2016.
    5. 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 January 2016.
    6. 1 2 3 Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal 150 (3): 35. arXiv:1504.04041. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved April 2016.
    7. ↑ 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 April 2016.
    8. 1 2 "6349 Acapulco (1995 CN1)". Minor Planet Center. Retrieved April 2016.
    9. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved April 2016.

    External links


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