12848 Agostino

12848 Agostino

Discovery[1]
Discovered by	A. Boattini
Discovery site	Campo Imperatore
Discovery date	10 July 1997
Designations
MPC designation	(12848) Agostino
Named after	Agostino Boattini (discoverer's father)[2]
Alternative designations	1997 NK10 · 1993 QQ10
Minor planet category	main-belt · Eunomia[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc	66.88 yr (24,428 days)
Aphelion	2.8514 AU
Perihelion	2.3537 AU
Semi-major axis	2.6025 AU
Eccentricity	0.0956
Orbital period (sidereal)	4.20 yr (1,534 days)
Mean anomaly	183.78°
Mean motion	0° 14^m 5.28^s / day
Inclination	15.066°
Longitude of ascending node	172.84°
Argument of perihelion	249.89°
Physical characteristics
Dimensions	4.55 km (calculated)[3] 4.864±0.120 km[4][5]
Synodic rotation period	6.3225±0.0052 h[6] 6.3350±0.0258 h[6]
Geometric albedo	0.21 (assumed)[3] 0.225±0.033[4][5]
Spectral type	S[3]
Absolute magnitude (H)	13.6[1] · 13.54±0.32[7] · 13.8[4] · 13.537±0.006 (R)[6] · 13.574±0.007 (R)[6] · 14.02[3]

12848 Agostino, provisional designation 1997 NK₁₀, is a stony Eunomia asteroid from the central region of the asteroid belt, approximately 5 kilometers in diameter.

The asteroid was discovered on 10 July 1997, by Italian astronomer Andrea Boattini at the Campo Imperatore Observatory in the Gran Sasso massif of central Italy.[8] It was named after the father of the discoverer, Agostino Boattini.[2]

Orbit and classification

Agostino is a member of the Eunomia family, a large group of stony S-type asteroids and the most prominent family in the intermediate main-belt. It orbits the Sun at a distance of 2.4–2.9 AU once every 4 years and 2 months (1,534 days). Its orbit has an eccentricity of 0.10 and an inclination of 15° with respect to the ecliptic.[1]

The body's observation arc begins 47 years prior to its official discovery observation with a precovery taken at Palomar Observatory in June 1950.[8]

Physical characteristics

Two rotational lightcurves of Agostino were obtained in the R-band from photometric observations by astronomers at the Palomar Transient Factory in August 2010, and February 2012, respectively. Lightcurve analysis gave a rotation period of 6.3350 and 6.3225 hours with a respective brightness variation of 0.51 and 0.84 in magnitude (U=2/2).[6]

According to the NEOWISE mission of NASA's space-based Wide-field Infrared Survey Explorer, Agostino measures 4.9 kilometers in diameter and its surface has an albedo of 0.23.[4] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.21 – derived from 15 Eunomia, the family's largest member and namesake – and calculates a diameter of 4.6 kilometers with an absolute magnitude of 14.02.[3]

Naming

This minor planet was named after Agostino Boattini (born 1932), the father of the discoverer.[2] The approved naming citation was published by the Minor Planet Center on 9 May 2001 (M.P.C. 42673).[9]

References

1. "JPL Small-Body Database Browser: 12848 Agostino (1997 NK10)" (2017-05-05 last obs.). Jet Propulsion Laboratory. Retrieved 24 June 2017.
2. Schmadel, Lutz D. (2007). "(12848) Agostino". Dictionary of Minor Planet Names – (12848) Agostino. Springer Berlin Heidelberg. p. 789. doi:10.1007/978-3-540-29925-7_8689. ISBN 978-3-540-00238-3.
3. "LCDB Data for (12848) Agostino". Asteroid Lightcurve Database (LCDB). Retrieved 2 May 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. Retrieved 2 May 2016.
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 3 December 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 2 May 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 2 May 2016.
8. "12848 Agostino (1997 NK10)". Minor Planet Center. Retrieved 2 May 2016.
9. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 2 May 2016.

External links

• Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
• Dictionary of Minor Planet Names, Google books
• Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
• Discovery Circumstances: Numbered Minor Planets (10001)-(15000) – Minor Planet Center
• 12848 Agostino at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 12848 Agostino at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters