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 (outer) · Themis [3]
Orbital characteristics [1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 39.03 yr (14,255 days)
Aphelion 3.6994 AU
Perihelion 2.7025 AU
3.2010 AU
Eccentricity 0.1557
5.73 yr (2,092 days)
310.43°
0° 10m 19.2s /
Inclination 0.9452°
175.03°
223.90°
Physical characteristics
Dimensions 13.052±0.197 km[4]
11.69±2.68 km[5]
10.49 km (calculated)[3]
11.7664±0.0038 h[6]
0.0945±0.0224[4]
0.098±0.064[5]
0.08 (assumed)[3]
C [3]
12.9[1]
13.10±0.41[7]
12.805±0.003[6]
12.6[4]
13.25[3]
12.80[5]

    12359 Cajigal, provisional designation 1993 SN3, is a carbonaceous Themistian asteroid from the outer region of the asteroid belt, about 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.[8]

    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 (2,092 days). Its orbit has an eccentricity of 0.16 and an inclination of 1° with respect to the ecliptic.[1]

    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).[6] According to the surveys carried out by NASA's Wide-field Infrared Survey Explorer with 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] The Collaborative Asteroid Lightcurve Link (CALL) 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 in 1888, the Cajigal Observatory ("El Observatorio Cajigal"), was later established.[2]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 12359 Cajigal (1993 SN3)" (2015-11-06 last obs.). Jet Propulsion Laboratory. Retrieved March 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 March 2016.
    3. 1 2 3 4 5 6 7 "LCDB Data for (12359) Cajigal". Asteroid Lightcurve Database (LCDB). Retrieved March 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 March 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 March 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 March 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 March 2016.
    8. ↑ "12359 Cajigal (1993 SN3)". Minor Planet Center. Retrieved March 2016.

    External links


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