2882 Tedesco

2882 Tedesco, provisional designation 1981 OG, is a Themistian asteroid from the outer regions of the asteroid belt, approximately 22 kilometers (14 miles) in diameter. It was discovered on 26 July 1981, by astronomer Edward Bowell at the Anderson Mesa Station near Flagstaff, Arizona.[1] The likely elongated C-type asteroid has a rotation period of 19.8 hours.[4] It was named for American astronomer Ed Tedesco.[1]

2882 Tedesco
Discovery [1]
Discovered byE. Bowell
Discovery siteAnderson Mesa Stn.
Discovery date26 July 1981
Designations
(2882) Tedesco
Named after
Ed Tedesco [1]
(American astronomer)
1981 OG · 1936 QG
1953 SF · 1964 PL
1970 QF1
main-belt [1][2] · (outer)
Themis [3][4]
Orbital characteristics [2]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc81.51 yr (29,770 d)
Aphelion3.7624 AU
Perihelion2.5429 AU
3.1527 AU
Eccentricity0.1934
5.60 yr (2,045 d)
178.19°
0° 10m 33.96s / day
Inclination0.2898°
314.33°
7.0021°
Physical characteristics
Mean diameter
20.89±5.43 km[5]
21.48 km (calculated)[4]
21.912±0.216 km[6]
22.78±6.57 km[7]
24.93±0.64 km[6]
19.805±0.008 h[8]
19.815±0.0195 h[9]
0.06±0.06[7]
0.065±0.014[6]
0.08±0.11[5]
0.084±0.012[6]
C (Pan-STARRS)[10]
C (SDSS-MOC)[11]
11.60[2][5][6]
11.683±0.002 (R)[9]
11.7[4]
11.87[7]
11.96±0.32[10]

    Orbit and classification

    Tedesco is a Themistian asteroid that belongs to the Themis family (602),[4][3] one of the largest families of carbonaceous asteroids in the main belt. The family is named after its parent body 24 Themis.[12]

    Tedesco orbits the Sun in the outer asteroid belt at a distance of 2.5–3.8 AU once every 5 years and 7 months (2,045 days; semi-major axis of 3.15 AU). Its orbit has an eccentricity of 0.19 and an inclination of 0° with respect to the ecliptic.[2] The body's observation arc begins with its first observation as 1936 QG at Heidelberg and Konkoly Observatory in August 1936, nearly 45 years prior to its official discovery observation at Anderson Mesa.[1]

    Physical characteristics

    Tedesco has been characterized as a carbonaceous C-type asteroid by both Pan-STARRS and SDSS,[10][11] and agrees with the Themis family's overall spectral type.[12]:23

    Rotation period

    In June 2014, a rotational lightcurve of Tedesco was obtained from photometric observations by Maurice Clark at Texas Tech's Preston Gott Observatory. Lightcurve analysis gave a well-defined rotation period of 19.805 hours with a high brightness amplitude of 0.76 magnitude, indicative of a non-spheroidal shape (U=3).[8] A previous measurement from October 2010 by astronomers at the Palomar Transient Factory in California gave a similar period of 19.815 with an equally high brightness variation of 0.65 magnitude.(U=2).[9]

    Diameter and albedo

    According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Tedesco measures between 20.89 and 24.93 kilometers in diameter and its surface has an albedo between 0.06 and 0.084,[5][6][7] while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.08 and calculates a diameter of 21.48 kilometers based on an absolute magnitude of 11.7.[4]

    Naming

    This minor planet was named after Edward Francis Tedesco (Ed Tedesco), a planetary scientist at the Jet Propulsion Laboratory, who analyzed observations with the Infrared Astronomical Satellite in the 1980s. His studies included photometric observations of minor planets, their pole and shape determination, as well as the compositional structure of the asteroid belt.[1] The official naming citation was published by the Minor Planet Center on 17 February 1984 (M.P.C. 8543).[13]

    References
    1. "2882 Tedesco (1981 OG)". Minor Planet Center. Retrieved 3 May 2018.
    2. "JPL Small-Body Database Browser: 2882 Tedesco (1981 OG)" (2018-02-26 last obs.). Jet Propulsion Laboratory. Retrieved 3 May 2018.
    3. "Asteroid 2882 Tedesco – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 26 October 2019.
    4. "LCDB Data for (2882) Tedesco". Asteroid Lightcurve Database (LCDB). Retrieved 3 May 2018.
    5. Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T.; et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos". The Astrophysical Journal. 814 (2): 13. arXiv:1509.02522. Bibcode:2015ApJ...814..117N. doi:10.1088/0004-637X/814/2/117.
    6. 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.
    7. Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T.; et al. (September 2016). "NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos". The Astronomical Journal. 152 (3): 12. arXiv:1606.08923. Bibcode:2016AJ....152...63N. doi:10.3847/0004-6256/152/3/63.
    8. Clark, Maurice (January 2015). "Asteroid Photometry from the Preston Gott Observatory". The Minor Planet Bulletin. 42 (1): 15–20. Bibcode:2015MPBu...42...15C. ISSN 1052-8091.
    9. 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.
    10. 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.
    11. Carvano, J. M.; Hasselmann, P. H.; Lazzaro, D.; Mothé-Diniz, T. (February 2010). "SDSS-based taxonomic classification and orbital distribution of main belt asteroids". Astronomy and Astrophysics. 510: 12. Bibcode:2010A&A...510A..43C. doi:10.1051/0004-6361/200913322. Retrieved 30 October 2019. (PDS data set)
    12. Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). Identification and Dynamical Properties of Asteroid Families. Asteroids IV. pp. 297–321. arXiv:1502.01628. Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 9780816532131.
    13. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 3 May 2018.

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