2874 Jim Young

2874 Jim Young
Discovery [1]
Discovered by E. Bowell
Discovery site Anderson Mesa Stn.
Discovery date 13 October 1982
Designations
MPC designation 2874 Jim Young
Named after
 James Young
(astronomer)[2]
1982 TH · 1962 WE
1965 SD · 1972 TD2
1972 XF
main-belt · Flora [3]
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 61.28 yr (22,383 days)
Aphelion 2.5455 AU
Perihelion 1.9439 AU
2.2447 AU
Eccentricity 0.1340
3.36 yr (1,228 days)
1.4817°
0° 17m 35.16s / day
Inclination 4.8911°
79.202°
322.22°
Physical characteristics
Dimensions 6.999±0.044 km[4]
7.47 km (calculated)[3]
7.70±0.43 km[5]
131.3 h[6]
0.1902±0.0435[4]
0.226±0.042[5]
0.24 (assumed)[3]
SMASS = S [1] · S [3]
12.8[1][3][5]
13.06±0.03[7]
13.2[4]

    2874 Jim Young, provisional designation 1982 TH, is a stony Florian asteroid and relatively slow rotator from the inner regions of the asteroid belt, approximately 7.5 kilometers in diameter. It was discovered on 13 October 1982, by American astronomer Edward Bowell at Lowell Observatory's Anderson Mesa Station near Flagstaff, Arizona.[8]

    The S-type asteroid is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun at a distance of 1.9–2.5 AU once every 3 years and 4 months (1,228 days). Its orbit has an eccentricity of 0.13 and an inclination of 5° with respect to the ecliptic.[1] The first precovery was taken at the U.S. Palomar Observatory in 1954, extending the asteroid's observation arc by 28 years prior to its discovery.[8]

    In January 2007, a rotational light-curve for this asteroid was obtained by U.S. astronomer Donald P. Pray at his Carbuncle Hill Observatory. It gave a very long rotation period of 131.3 hours with a brightness amplitude of approximately 0.75 in magnitude (U=2).[6]

    According to two different data sets from NASA's space-based Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the asteroid measures 7.0 and 7.7 kilometers in diameter and its surface has an albedo of 0.190 and 0.226, respectively.[4][5] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the family's largest member and namesake – and calculates a diameter of 7.5 kilometers, based on an absolute magnitude of 12.8.[3]

    The minor planet was named for U.S. astronomer James Young at JPL's Table Mountain Observatory near Wrightwood, California. At the time of citation, his numerous photometric observations significantly contributed to the number of then known rotation periods of asteroids.[2] Naming citation was published on 10 September 1984 (M.P.C. 9081).[9] Young is also a prolific discoverer of minor planets, credited by the Minor Planet Center with the discovery of more than 250 numbered bodies.[10]

    References

    1. 1 2 3 4 5 "JPL Small-Body Database Browser: 2874 Jim Young (1982 TH)" (2015-07-14 last obs.). Jet Propulsion Laboratory. Retrieved 31 July 2016.
    2. 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (2874) Jim Young. Springer Berlin Heidelberg. p. 236. ISBN 978-3-540-00238-3. Retrieved 31 July 2016.
    3. 1 2 3 4 5 6 "LCDB Data for (2874) Jim Young". Asteroid Lightcurve Database (LCDB). Retrieved 31 July 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 31 July 2016.
    5. 1 2 3 4 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:1209.5794Freely accessible. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 31 July 2016.
    6. 1 2 Pray, Donald P.; Galad, Adrian; Husarik, Marek; Oey, Julian (March 2008). "Lightcurve Analysis of Fourteen Asteroids". The Minor Planet Bulletin. 35 (1): 34–36. Bibcode:2008MPBu...35...34P. ISSN 1052-8091. Retrieved 31 July 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:1506.00762Freely accessible. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 31 July 2016.
    8. 1 2 "2874 Jim Young (1982 TH)". Minor Planet Center. Retrieved 31 July 2016.
    9. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 31 July 2016.
    10. ↑ "Minor Planet Discoverers (by number)". Minor Planet Center. 23 May 2016. Retrieved 31 July 2016.

    External links

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