13260 Sabadell

13260 Sabadell, prov. designation: 1998 QZ15, is a stony Eunomia asteroid from the central region of the asteroid belt. It was discovered by Catalan amateur astronomers Ferran Casarramona and Antoni Vidal at the Montjoia Observatory (953), Barcelona, on 23 August 1998.[1] The likely elongated asteroid measures approximately 5.3 kilometers (3.3 miles) in diameter and has a rotation period of 5.3 hours.[9] It was named after the astronomical society "Agrupació Astronòmica de Sabadell".[2]

13260 Sabadell
Discovery[1]
Discovered byF. Casarramona
A. Vidal
Discovery siteMontjoia Obs.
Discovery date23 August 1998
Designations
(13260) Sabadell
Named after
Agrupació Astronómica de Sabadell
(astronomical society)[2]
1998 QZ15 · 1974 TQ1
main-belt · Eunomia[3][4]
Orbital characteristics[5]
Epoch 1 July 2021 (JD 2459396.5)
Uncertainty parameter 0
Observation arc69.36 yr (25,334 d)
Aphelion2.9499 AU
Perihelion2.1479 AU
2.5489 AU
Eccentricity0.1573
4.07 yr (1,486 d)
249.07°
0° 14m 31.92s / day
Inclination12.760°
286.92°
7.1969°
Physical characteristics
Mean diameter
5.304±0.105 km[6][7]
6.4366±0.0007 h[8][9]
0.306±0.029[6][7]
S[9]
13.66[1][5]
13.1[6]

    Orbit and classification

    Sabadell is a core member of the Eunomia family (502),[3][4] a large group of S-type asteroids and the most prominent family in the intermediate main-belt. It orbits the Sun in the central main-belt at a distance of 2.1–2.9 AU once every 4 years and 1 month (1,486 days; semi-major axis of 2.55 AU). Its orbit has an eccentricity of 0.16 and an inclination of 13° with respect to the ecliptic.[5] A first precovery was taken at Palomar Observatory in January 1952, extending the asteroid's observation arc by 46 years prior to its official discovery at Montjoia Observatory.[1]

    Naming

    This minor planet was named for the well known Catalan–Spanish amateur astronomical society Agrupació Astronómica de Sabadell, which celebrated its 40th anniversary in 2000. Both discoverers are members of this society.[2] The approved naming citation was published by the Minor Planet Center on 26 July 2000 (M.P.C. 41032).[10] The society uses the Observatorio de Sabadell (619), one of the country's most prolific amateur observatories, located in a park in the center of Sabadell, near Barcelona, Spain.[11]

    Physical characteristics

    Lightcurves

    In 2006, a rotational lightcurve was obtained from photometric observations by Italian astronomers Silvano Casulli and Antonio Vagnozzi. It gave a well-defined rotation period of 6.4366±0.0007 hours with a high brightness amplitude of 0.56±0.01 in magnitude (U=3), indicative of an elongated, non-spherical shape.[8][9]

    Diameter and albedo

    According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures 5.3 kilometers in diameter and has a high surface albedo of 0.31,[6] while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.21 and calculates a diameter of 6.1 kilometers, as the lower the body's albedo (reflectivity) the higher its diameter, at a constant absolute magnitude (brightness).[9]

    References
    1. "13260 Sabadell (1998 QZ15)". Minor Planet Center. Retrieved 27 July 2021.
    2. Schmadel, Lutz D. (2007). "(13260) Sabadell". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 795. doi:10.1007/978-3-540-29925-7_8771. ISBN 978-3-540-00238-3.
    3. "Asteroid 13260 Sabadell – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 27 July 2021.
    4. "Asteroid 13260 Sabadell – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 27 July 2021.
    5. "JPL Small-Body Database Browser: 13260 Sabadell (1998 QZ15)" (2021-06-11 last obs.). Jet Propulsion Laboratory. Retrieved 27 July 2021.
    6. 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 17 May 2016.
    7. 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.{{cite journal}}: CS1 maint: multiple names: authors list (link)
    8. Behrend, Raoul. "Asteroids and comets rotation curves – (13260) Sabadell". Geneva Observatory. Retrieved 17 May 2016.
    9. "LCDB Data for (13260) Sabadell". Asteroid Lightcurve Database (LCDB). Retrieved 27 July 2021.
    10. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 17 May 2016.
    11. "Observatorio de Sabadell". Astrónomica de Sabadell (in Spanish). Retrieved 26 April 2016.
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