15460 Manca

15460 Manca
Discovery [1]
Discovered by A. Boattini
L. Tesi
Discovery site San Marcello Pistoiese Obs.
Discovery date 25 December 1998
Designations
MPC designation 15460 Manca
Named after
 Francesco Manca
(astronomer)[2]
1998 YD10 · 1994 ET1
main-belt · Koronis [3]
Orbital characteristics [1]
Epoch 16 February 2017 (JD 2457800.5)
Uncertainty parameter 0
Observation arc 65.17 yr (23,805 days)
Aphelion 3.1664 AU
Perihelion 2.6455 AU
2.9060 AU
Eccentricity 0.0896
4.95 yr (1,809 days)
276.40°
0° 11m 56.4s / day
Inclination 3.2873°
92.427°
320.93°
Physical characteristics
Dimensions 5.17 km (calculated)[3]
5.354±0.315 km[4][5]
7.2723±0.0209 h[6]
0.24 (assumed)[3]
0.2949±0.0586[4]
0.295±0.059[5]
X [7] · S [3]
12.97±0.29[7] · 13.3[4] · 13.6[1][3] · 14.114±0.005 (S)[6]

    15460 Manca, provisional designation 1998 YD10, is a Koronian asteroid from the outer region of the asteroid belt, approximately 5 kilometers in diameter. It was discovered on 25 December 1998, by Italian astronomers Andrea Boattini and Luciano Tesi at Pistoia Mountains Astronomical Observatory in San Marcello Pistoiese, central Italy.[8]

    The stony S-type asteroid belongs to the Koronis family, a group consisting of few hundred known bodies with nearly ecliptical orbits. It is also classified as a X-type asteroid by Pan-STARRS' large-scale survey.[7] Manca orbits the Sun at a distance of 2.6–3.2 AU once every 4 years and 11 months (1,809 days). Its orbit has an eccentricity of 0.09 and an inclination of 3° with respect to the ecliptic.[1] The first precovery was taken at Palomar Observatory in 1950, extending the asteroid's observation arc by 48 years prior to its discovery.[8]

    In August 2012, a rotational light-curve was obtained for Manca from photometric observations made at the Palomar Transient Factory, California. It gave it a rotation period of 7.2723±0.0209 hours with a brightness variation of 0.22 magnitude (U=2).[6]

    According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the asteroid measures 5.35 kilometers in diameter and its surface has an albedo of 0.295.[4][5] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for members of the Koronian family of 0.24, and calculates a diameter of 5.17 kilometers, based on an absolute magnitude of 13.6.[3]

    The minor planet was named for Italian amateur astronomer Francesco Manca (b. 1966), member of the "Gruppo Astrofili Brianza" and an active observer of near-Earth objects, and potentially hazardous asteroids in particular, at Sormano Astronomical Observatory in northern Italy.[2] Naming citation was published on 13 October 2000 (M.P.C. 41388).[9]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 15460 Manca (1998 YD10)" (2015-05-24 last obs.). Jet Propulsion Laboratory. Retrieved 3 December 2016.
    2. 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (15460) Manca. Springer Berlin Heidelberg. p. 825. ISBN 978-3-540-00238-3. Retrieved 5 November 2016.
    3. 1 2 3 4 5 6 "LCDB Data for (15460) Manca". Asteroid Lightcurve Database (LCDB). Retrieved 5 November 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" (PDF). The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407Freely accessible. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 5 November 2016.
    5. 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 5 November 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:1504.04041Freely accessible. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved 5 November 2016.
    7. 1 2 3 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 5 November 2016.
    8. 1 2 "15460 Manca (1998 YD10)". Minor Planet Center. Retrieved 5 November 2016.
    9. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 5 November 2016.

    External links

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