9115 Battisti

9115 Battisti, provisional designation 1997 DG, is a stony Vestian asteroid from the inner regions of the asteroid belt, approximately 5.5 kilometers in diameter. It was discovered on 27 February 1997, by Italian astronomers Piero Sicoli and Francesco Manca at Sormano Astronomical Observatory in northern Italy.[7] The asteroid was named for Italian singer-songwriter Lucio Battisti.[2]

9115 Battisti
Discovery [1]
Discovered byP. Sicoli
F. Manca
Discovery siteSormano Obs. (587)
Discovery date27 February 1997
Designations
(9115) Battisti
Named after
Lucio Battisti
(singer, songwriter)[2]
1997 DG · 1980 RC8
1991 RM21
main-belt · Vestian [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc35.82 yr (13,082 days)
Aphelion2.6103 AU
Perihelion2.1806 AU
2.3955 AU
Eccentricity0.0897
3.71 yr (1,354 days)
91.637°
0° 15m 56.88s / day
Inclination5.1604°
267.21°
344.55°
Physical characteristics
Dimensions5.14 km (calculated)[3]
5.73±0.58 km[4]
5.0228±0.0025 h[5]
0.195±0.054[4]
0.20 (assumed)[3]
S [3]
13.359±0.002 (R)[5] · 13.60[4] · 13.69±0.22[6] · 13.7[1] · 13.81[3]

    Orbit and classification

    Battisti is a member of the Vestian family. It orbits the Sun in the inner main-belt at a distance of 2.2–2.6 AU once every 3 years and 9 months (1,354 days). Its orbit has an eccentricity of 0.09 and an inclination of 5° with respect to the ecliptic.[1] In September 1980, it was first identified as 1980 RC8 at Palomar Observatory, extending the body's observation arc by 17 years prior to its official discovery observation at Sormano.[7]

    Physical characteristics

    Rotation period

    In November 2010, a fragmentary rotational lightcurve of Battisti was obtained from photometric observations at the Palomar Transient Factory in California. It gave a rotation period of 5.0228 hours with a low brightness variation of 0.07 magnitude (U=1), typically indicating that the asteroid has a nearly spheroidal shape.[5]

    Diameter and albedo

    According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Battisti measures 5.7 kilometers in diameter and its surface has an albedo of 0.195,[4] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo of 0.20 for stony asteroids and calculates a diameter of 5.1 kilometers, based on an absolute magnitude of 13.82.[3]

    Naming

    This minor planet was named in memory of Italian singer-songwriter Lucio Battisti (1943–1998).[8] In the 1970s, Battisti lived in a small village near Sormano, location of the discovering observatory.[2] The official naming citation was published by the Minor Planet Center on 8 December 1998, three months after his death (M.P.C. 33389).[9]

    References
    1. "JPL Small-Body Database Browser: 9115 Battisti (1997 DG)" (2016-07-08 last obs.). Jet Propulsion Laboratory. Retrieved 22 June 2017.
    2. Schmadel, Lutz D. (2007). "(9115) Battisti". Dictionary of Minor Planet Names – (9115) Battisti. Springer Berlin Heidelberg. p. 678. doi:10.1007/978-3-540-29925-7_7371. ISBN 978-3-540-00238-3.
    3. "LCDB Data for (9115) Battisti". Asteroid Lightcurve Database (LCDB). Retrieved 24 July 2016.
    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 24 July 2016.
    5. 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 1 January 2016.
    6. 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 24 July 2016.
    7. "9115 Battisti (1997 DG)". Minor Planet Center. Retrieved 24 July 2016.
    8. "Lucio Battisti, 55, Italian Pop Performer". The New York Times. New York Times. 24 September 1998. Retrieved 5 August 2016.
    9. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 24 July 2016.

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