12359 Cajigal

12359 Cajigal
Discovery [1]
Discovered by O. A. Naranjo
Discovery site Llano del Hato – Mérida
Discovery date 22 September 1993
Designations
MPC designation 12359 Cajigal
Named after
 Juan Manuel Cajigal y Odoardo (mathematician, engineer, and statesman)[2]
1993 SN3 · 1976 UU2
1998 QB9
main-belt · Themis [3]
Orbital characteristics [1]
Epoch 16 February 2017 (JD 2457800.5)
Uncertainty parameter 0
Observation arc 40.04 yr (14,625 days)
Aphelion 3.6982 AU
Perihelion 2.7028 AU
3.2005 AU
Eccentricity 0.1555
5.73 yr (2,091 days)
19.317°
0° 10m 19.56s / day
Inclination 0.9455°
175.04°
223.84°
Physical characteristics
Dimensions 10.49 km (calculated)[3]
11.69±2.68 km[4]
13.052±0.197 km[5][6]
11.7664±0.0038 h[7]
0.08 (assumed)[3]
0.0945±0.0224[5]
0.095±0.022[6]
0.098±0.064[4]
C [3]
12.9[1] · 13.10±0.41[8] · 12.805±0.003[7] · 12.6[5] · 13.25[3] · 12.80[4]

    12359 Cajigal, provisional designation 1993 SN3, is a carbonaceous Themistian asteroid from the outer region of the asteroid belt, approximately 12 kilometers in diameter. It was discovered on 22 September 1993, by Venezuelan astronomer Orlando Naranjo at the Llano del Hato National Astronomical Observatory, Mérida, located in the Venezuelan Andes.[9]

    The dark C-type asteroid is a member of the Themis family, a dynamical family of outer-belt asteroids with nearly coplanar ecliptical orbits.[3] It orbits the Sun at a distance of 2.7–3.7 AU once every 5 years and 9 months (2,091 days). Its orbit has an eccentricity of 0.16 and an inclination of 1° with respect to the ecliptic.[1] The first precovery was taken at Steward Observatory (Kitt Peak–Spacewatch) in 1991, extending the asteroid's observation arc by 2 years prior to its discovery. The first unused observation at Crimea-Nauchnij dates back to 1976.[9]

    In 2010, a photometric light-curve analysis at the U.S. Palomar Transient Factory, California, rendered a rotation period of 11.7664±0.0038 hours with a brightness amplitude of 0.27 in magnitude (U=2).[7] According to the surveys carried out by NASA's Wide-field Infrared Survey Explorer and its subsequent NEOWISE mission, the asteroid's diameter measures 13.1 and 11.7 kilometers, and its surface has an albedo of 0.095 and 0.098, respectively.[4][5][6] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.08 and calculates a diameter of 10.5 kilometers.[3]

    The minor planet is named after Venezuelan mathematician, engineer, and statesman, Juan Manuel Cajigal y Odoardo (1803–1856), who introduced the study of mathematics and engineering in his country with his founding of the Military Academy of Mathematics in 1831. He also installed the first astronomical telescopes in Caracas, where the Cajigal Observatory ("El Observatorio Cajigal") was later established in 1888.[2] Naming citation was published on 10 September 2003 (M.P.C. 49675).[10]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 12359 Cajigal (1993 SN3)" (2016-11-10 last obs.). Jet Propulsion Laboratory. Retrieved 4 December 2016.
    2. 1 2 Schmadel, Lutz D. (2006). Dictionary of Minor Planet Names – (12359) Cajigal, Addendum to Fifth Edition: 2003–2005. Springer Berlin Heidelberg. p. 70. ISBN 978-3-540-34360-8. Retrieved 22 March 2016.
    3. 1 2 3 4 5 6 7 "LCDB Data for (12359) Cajigal". Asteroid Lightcurve Database (LCDB). Retrieved 17 May 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:1209.5794Freely accessible. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 17 May 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:1109.6407Freely accessible. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 17 May 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 4 December 2016.
    7. 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:1504.04041Freely accessible. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved 17 May 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:1506.00762Freely accessible. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 17 May 2016.
    9. 1 2 "12359 Cajigal (1993 SN3)". Minor Planet Center. Retrieved 22 March 2016.
    10. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 17 May 2016.

    External links

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