9115 Battisti

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9115 Battisti
Discovery [1]
Discovered by P. Sicoli
F. Manca
Discovery site Sormano Obs. (587)
Discovery date 27 February 1997
MPC designation 9115 Battisti
Named after
Lucio Battisti
(singer, songwriter)[2]
1997 DG · 1980 RC8
1991 RM21
main-belt · Vestian[3]
Orbital characteristics[1]
Epoch 16 February 2017 (JD 2457800.5)
Uncertainty parameter 0
Observation arc 35.76 yr (13,060 days)
Aphelion 2.6097 AU
Perihelion 2.1804 AU
2.3950 AU
Eccentricity 0.0896
3.71 yr (1,354 days)
0° 15m 57.24s / day
Inclination 5.1607°
Physical characteristics
Dimensions 5.14 km (calculated)[3]
5.73±0.58 km[4]
5.0228±0.0025 h[5]
0.20 (assumed)[3]
13.359±0.002 (R)[5] · 13.60[4] · 13.69±0.22[6] · 13.7[1] · 13.81[3]

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 by Italian astronomers Piero Sicoli and Francesco Manca at Sormano Astronomical Observatory in northern Italy, on 27 February 1997.[7]

The stony S-type asteroid is a member of the Vestian family. It orbits the Sun 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] The first used observation was made at Palomar Observatory in 1980, extending the asteroid's observation arc by 17 years prior to its discovery.[7]

In November 2010, a rotational light-curve for this asteroid obtained from photometric observations at the U.S. Palomar Transient Factory in California. It rendered a rotation period of 5.0228±0.0025 hours with a brightness amplitude of 0.07 in magnitude (U=1), typically indicating that the asteroid has a nearly spheroidal shape.[5]

According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the asteroid 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]

The minor planet is 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] Naming citation was published on 8 December 1998, three months after his death (M.P.C. 33389).[9]


  1. ^ a b c d "JPL Small-Body Database Browser: 9115 Battisti (1997 DG)" (2016-06-16 last obs.). Jet Propulsion Laboratory. Retrieved 4 December 2016. 
  2. ^ a b Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (9115) Battisti. Springer Berlin Heidelberg. p. 678. ISBN 978-3-540-00238-3. Retrieved 24 July 2016. 
  3. ^ a b c d e f "LCDB Data for (9115) Battisti". Asteroid Lightcurve Database (LCDB). Retrieved 24 July 2016. 
  4. ^ a b c d 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 24 July 2016. 
  5. ^ a b c 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 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:1506.00762Freely accessible. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 24 July 2016. 
  7. ^ a b "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. September 24, 1998. Retrieved 5 August 2016. 
  9. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 24 July 2016. 

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