5088 Tancredi

5088 Tancredi
Discovery [1]
Discovered by C.-I. Lagerkvist
Discovery site La Silla Obs.
Discovery date 22 August 1979
Designations
MPC designation 5088 Tancredi
Named after
 Gonzalo Tancredi
(astronomer)[2]
1979 QZ1 · 1982 DP6
1985 RS3
main-belt · Themis [3]
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 36.80 yr (13,443 days)
Aphelion 3.5928 AU
Perihelion 2.6151 AU
3.1040 AU
Eccentricity 0.1575
5.47 yr (1,997 days)
153.64°
0° 10m 48.72s / day
Inclination 0.5844°
5.7378°
84.841°
Physical characteristics
Dimensions 12.81 km (derived)[3]
15.939±0.137 km[4][5]
5.0591±0.0001 h[6]
0.0695±0.0122[4][5]
0.08 (assumed)[3]
C [3][6]
12.36±0.07 (S)[6]
12.5[1][4][5]
12.81[3]

    5088 Tancredi, provisional designation 1979 QZ1, is a carbonaceous Themistian asteroid from the outer region of the asteroid belt, approximately 15 kilometers in diameter. It was discovered on 22 August 1979, by Swedish astronomer Claes-Ingvar Lagerkvist at ESO's La Silla Observatory in northern Chile.[7]

    The dark C-type asteroid is a member of the Themis family, a dynamical family of outer-belt asteroids with nearly coplanar ecliptical orbits. It orbits the Sun at a distance of 2.6–3.6 AU once every 5 years and 6 months (1,997 days). Its orbit has an eccentricity of 0.16 and an inclination of 1° with respect to the ecliptic.[1] As no precoveries were taken, the asteroid's observation arc begins with its discovery observation in 1979.[7]

    In February 2009, a rotational light-curve was obtained for this asteroid from photometric observations by Gonzalo Tancredi at the Los Molinos Observatory near Montevideo, Uruguay. It gave a rotation period of 5.0591±0.0001 hours with a brightness amplitude of 0.31 magnitude (U=3-).[6]

    According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures 15.9 kilometers in diameter and its surface has an albedo of 0.07,[4][5] while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.08 and calculates a diameter of 12.8 kilometers.[3]

    The minor planet was named after Gonzalo Tancredi (b. 1963), the Uruguayan astronomer who also obtained the body's first rotational light-curve. In 1993 he did his Ph.D. at Uppsala Observatory, Sweden, and is now a professor of astronomy at Uruguay University and an active member of the IAU.[8][9] He was also a director of the Los Molinos Observatory (2004–2012).[9] Using both observations and theoretical modeling, he works on the dynamical and physical evolution of comets and their interactions with minor planets in the Solar System.[2] Naming citation was published on 1 September 1993 (M.P.C. 22506).[10]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 5088 Tancredi (1979 QZ1)" (2016-06-11 last obs.). Jet Propulsion Laboratory. Retrieved 10 September 2016.
    2. 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (5088) Tancredi. Springer Berlin Heidelberg. pp. 437–438. ISBN 978-3-540-00238-3. Retrieved 10 September 2016.
    3. 1 2 3 4 5 6 "LCDB Data for (5088) Tancredi". Asteroid Lightcurve Database (LCDB). Retrieved 10 September 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 10 September 2016.
    5. 1 2 3 4 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 10 September 2016.
    6. 1 2 3 4 Tancredi, Gonzalo; Bruzzone, Sebastián; Santiago, Roland; Salvo, Raúl; Martínez, Mariana (January 2012). "5088 Tancredi: Rotation Period and Phase Coefficients". The Minor Planet Bulletin. 39 (1): 14-15. Bibcode:2012MPBu...39...14T. ISSN 1052-8091. Retrieved 10 September 2016.
    7. 1 2 "5088 Tancredi (1979 QZ1)". Minor Planet Center. Retrieved 10 September 2016.
    8. ↑ "Individual Members—Gonzalo Tancredi". IAU—International Astronomical Union. 20 March 2014. Retrieved 10 September 2016.
    9. 1 2 "Curriculum Vitae – Gonzalo Tancredi". IFFC Instituto de Física Facultad de Ciencias. Retrieved 10 September 2016.
    10. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 10 September 2016.

    External links

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