| Discovery[1] | |
|---|---|
| Discovered by | E. Bowell |
| Discovery site | Anderson Mesa Stn. |
| Discovery date | 26 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 arc | 81.51yr (29,770 d) |
| Aphelion | 3.7624AU |
| Perihelion | 2.5429 AU |
| 3.1527 AU | |
| Eccentricity | 0.1934 |
| 5.60 yr (2,045 d) | |
| 178.19° | |
| 0° 10m 33.96s / day | |
| Inclination | 0.2898° |
| 314.33° | |
| 7.0021° | |
| Physical characteristics | |
| 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] | |
2882 Tedesco, provisional designation1981 OG, is a Themistianasteroid from the outer regions of theasteroid belt, approximately 22 kilometers (14 miles) in diameter. It was discovered on 26 July 1981, by astronomerEdward Bowell at theAnderson Mesa Station near Flagstaff, Arizona.[1] The likely elongatedC-type asteroid has arotation period of 19.8 hours.[4] It was named for American astronomerEd Tedesco.[1]
Tedesco is a Themistian asteroid that belongs to theThemis family (602),[4][3] one of the largestfamilies of carbonaceous asteroids in the main belt. The family is named after its parent body24 Themis.[12]
Tedesco orbits the Sun in theouter 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 aneccentricity of 0.19 and aninclination of 0° with respect to theecliptic.[2] The body'sobservation arc begins with its first observation as1936 QG atHeidelberg andKonkoly Observatory in August 1936, nearly 45 years prior to its official discovery observation at Anderson Mesa.[1]
Tedesco has been characterized as a carbonaceousC-type asteroid by bothPan-STARRS andSDSS,[10][11] and agrees with the Themis family's overallspectral type.[12]: 23
In June 2014, a rotationallightcurve ofTedesco was obtained fromphotometric observations by Maurice Clark atTexas Tech's Preston Gott Observatory. Lightcurve analysis gave a well-definedrotation period of 19.805 hours with a high brightness amplitude of 0.76magnitude, indicative of a non-spheroidal shape (U=3).[8] A previous measurement from October 2010 by astronomers at thePalomar Transient Factory in California gave a similar period of 19.815 with an equally high brightness variation of 0.65 magnitude.(U=2).[9]
According to the survey carried out by theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Tedesco measures between 20.89 and 24.93 kilometers in diameter and its surface has analbedo between 0.06 and 0.084,[5][6][7] while theCollaborative Asteroid Lightcurve Link assumes an albedo of 0.08 and calculates a diameter of 21.48 kilometers based on anabsolute magnitude of 11.7.[4]
Thisminor planet was named afterEdward Francis Tedesco (Ed Tedesco), aplanetary scientist at theJet Propulsion Laboratory, who analyzed observations with theInfrared Astronomical Satellite in the 1980s. His studies included photometric observations of minor planets, theirpole and shape determination, as well as the compositional structure of the asteroid belt.[1] The official naming citation was published by theMinor Planet Center on 17 February 1984 (M.P.C. 8543).[13]
