6349 Acapulco

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6349 Acapulco
Discovery  [1]
Discovered by M. Koishikawa
Discovery site Ayashi Station ( 391 )
(Sendai Astronomical Observatory)
Discovery date8 February 1995
Designations
(6349) Acapulco
Named after
 Acapulco (Mexican sister city) [2]
1995 CN1 ·1947 EC
1973 AH4 ·1973 CL
1988 SA1
main-belt  ·(middle)  [3]
Adeona   [4]
Orbital characteristics   [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 70.23 yr (25,651 days)
Aphelion 3.0392 AU
Perihelion 2.2937 AU
2.6664 AU
Eccentricity 0.1398
4.35 yr (1,590 days)
23.621°
0° 13m 35.04s / day
Inclination 10.787°
328.10°
236.48°
Physical characteristics
Dimensions12.35 km (calculated) [3]
14.66±3.43 km [5]
19.24±1.2 km (IRAS:5) [6]
20.429±0.206 km [7] [8]
22.54±0.69 km [9]
22.69±0.56 km [10]
23.02±8.65 km [11]
4.3755±0.0020 h [12]
0.0377±0.0066 [7]
0.04±0.03 [11]
0.045±0.005 [10] [8]
0.057±0.004 [9]
0.0757±0.010(IRAS:5) [6]
0.10 (assumed) [3]
0.10±0.08 [5]
S   [3]
12.00 [9]  ·12.18±0.54 [13]  ·12.2 [7] [10]  ·12.209±0.001(R) [12]  ·12.3 [1] [5]  ·12.53 [11]  ·12.66 [3]

    6349 Acapulco, provisional designation 1995 CN1, is a dark Adeonian asteroid from the middle region of the asteroid belt, approximately 22 kilometers in diameter.

    Contents

    The asteroid was discovered on 8 February 1995, by Japanese astronomer Masahiro Koishikawa at the Ayashi Station ( 391 ) of the Sendai Astronomical Observatory in the Tōhoku region of Japan. [14] It was named for the Mexican city of Acapulco. [2]

    Orbit and classification

    Acapulco is a member of the Adeona family ( 505 ), a large family of carbonaceous asteroids. [4] It orbits the Sun in the central main-belt 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]

    In March 1947, it was first identified as 1947 EC at Yerkes Observatory. The body's observation arc begins 42 years prior to its official discovery observation at Ayashi, with a precovery taken at Palomar Observatory in 1953. [14]

    Physical characteristics

    Lightcurves

    A rotational lightcurve of Acapulco was obtained from photometric observations made at the Palomar Transient Factory in September 2010. Lightcurve analysis gave a rotation period of 4.3755 hours with a brightness variation of 0.18 magnitude ( U=2 ). [12]

    Diameter and albedo

    According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Acapulco measures between 14.66 and 23.02 kilometers in diameter, and its surface has an albedo in the range of 0.037 to 0.10. [5] [6] [7] [9] [10] [11]

    The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.10 and calculates a smaller diameter of 12.35 kilometers with an absolute magnitude of 12.66. [3]

    Naming

    This minor planet was 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. [2]

    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] The official naming citation was published by the Minor Planet Center on 2 February 1999 (M.P.C. 33787). [15]

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    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 6349 Acapulco (1995 CN1)" (2017-06-03 last obs.). Jet Propulsion Laboratory . Retrieved 21 June 2017.
    2. 1 2 3 4 Schmadel, Lutz D. (2007). "(6349) Acapulco". Dictionary of Minor Planet Names – (6349) Acapulco. Springer Berlin Heidelberg. p. 526. doi:10.1007/978-3-540-29925-7_5810. ISBN   978-3-540-00238-3.
    3. 1 2 3 4 5 6 "LCDB Data for (6349) Acapulco". Asteroid Lightcurve Database (LCDB). Retrieved 27 April 2016.
    4. 1 2 "Asteroid 6349 Acapulco – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 27 October 2019.
    5. 1 2 3 4 Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T.; et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos". The Astrophysical Journal. 814 (2): 13. arXiv: 1509.02522 . Bibcode:2015ApJ...814..117N. doi:10.1088/0004-637X/814/2/117. S2CID   9341381 . Retrieved 21 June 2017.
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    8. 1 2 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: 1109.4096 . Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. S2CID   118745497 . Retrieved 5 December 2016.
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    10. 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. S2CID   46350317 . Retrieved 11 January 2016.
    11. 1 2 3 4 Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T.; et al. (September 2016). "NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos". The Astronomical Journal. 152 (3): 12. arXiv: 1606.08923 . Bibcode:2016AJ....152...63N. doi: 10.3847/0004-6256/152/3/63 . S2CID   119289027.
    12. 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. S2CID   8342929 . Retrieved 27 April 2016.
    13. ↑ 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. S2CID   53493339 . Retrieved 27 April 2016.
    14. 1 2 "6349 Acapulco (1995 CN1)". Minor Planet Center. Retrieved 27 April 2016.
    15. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 27 April 2016.
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