15460 Manca

15460 Manca, provisional designation 1998 YD10, is a Koronian asteroid from the outer region of the asteroid belt, approximately 5 kilometers in diameter.

15460 Manca
Discovery [1]
Discovered byA. Boattini
L. Tesi
Discovery siteSan Marcello Pistoiese Obs.
Discovery date25 December 1998
Designations
(15460) Manca
Named after
Francesco Manca
(Italian astronomer)[2]
1998 YD10 · 1994 ET1
main-belt · Koronis [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc66.30 yr (24,216 days)
Aphelion3.1671 AU
Perihelion2.6460 AU
2.9065 AU
Eccentricity0.0896
4.96 yr (1,810 days)
316.30°
0° 11m 56.04s / day
Inclination3.2872°
92.423°
320.81°
Physical characteristics
Dimensions5.17 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]

    The asteroid 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] It was named for Italian amateur astronomer Francesco Manca.[2]

    Orbit and classification

    Manca belongs to the Koronis family, a family of stony asteroids in the outer main-belt with nearly ecliptical orbits. It orbits the Sun at a distance of 2.6–3.2 AU once every 4 years and 12 months (1,810 days). Its orbit has an eccentricity of 0.09 and an inclination of 3° with respect to the ecliptic.[1]

    The asteroid's observation arc begins 48 years prior to its official discovery observation, with a precovery taken at the Palomar Observatory in March 1950.[8]

    Physical characteristics

    Manca has also been characterized as an X-type asteroid by Pan-STARRS' photometric survey.[7]

    Rotation period

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

    Diameter and albedo

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

    Naming

    This minor planet was named for Italian amateur astronomer Francesco Manca (born 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] The official naming citation was published by the Minor Planet Center on 13 October 2000 (M.P.C. 41388).[9]

    gollark: Well, the Geneva convention only applies to wars, so it's fiiiiine* if you're not TECHNICALLY at war!
    gollark: I see.
    gollark: Hmm, yes, perhaps, but renting sounds !!CAPITALISM!! of you.
    gollark: What? Having guns early is important to something something learn about the safety?
    gollark: Beyond the Foundation's capacity to secretly build.

    References
    1. "JPL Small-Body Database Browser: 15460 Manca (1998 YD10)" (2016-07-08 last obs.). Jet Propulsion Laboratory. Retrieved 26 June 2017.
    2. Schmadel, Lutz D. (2007). "(15460) Manca". Dictionary of Minor Planet Names – (15460) Manca. Springer Berlin Heidelberg. p. 825. doi:10.1007/978-3-540-29925-7_9147. ISBN 978-3-540-00238-3.
    3. "LCDB Data for (15460) Manca". Asteroid Lightcurve Database (LCDB). Retrieved 5 November 2016.
    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.
    5. 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. Retrieved 5 November 2016.
    6. 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 5 November 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 5 November 2016.
    8. "15460 Manca (1998 YD10)". Minor Planet Center. Retrieved 5 November 2016.
    9. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 5 November 2016.

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