1952 Hesburgh

1952 Hesburgh, provisional designation 1951 JC, is a rare-type carbonaceous asteroid from the outer regions of the asteroid belt, approximately 37 kilometers in diameter.

1952 Hesburgh
Discovery [1]
Discovered byIndiana University
(Indiana Asteroid Program)
Discovery siteGoethe Link Obs.
Discovery date3 May 1951
Designations
(1952) Hesburgh
Named after
Theodore M. Hesburgh
(University president)[2]
1951 JC · 1936 ND
1939 AB · 1940 GQ
1954 XC · 1974 KQ
main-belt · (outer) [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc77.14 yr (28,177 days)
Aphelion3.5522 AU
Perihelion2.6708 AU
3.1115 AU
Eccentricity0.1416
5.49 yr (2,005 days)
175.77°
0° 10m 46.56s / day
Inclination14.255°
78.149°
339.27°
Physical characteristics
Dimensions32.39±8.33 km[4]
35.55±1.4 km (IRAS:15)[5]
37.501±0.151 km[6]
39.660±0.381 km[7]
41.27±1.19 km[8]
47.7±0.1 h[9][lower-alpha 1]
0.078±0.005[8]
0.080±0.012[6]
0.0837±0.0130[7]
0.10±0.03[4]
0.1041±0.009 (IRAS:15)[5]
Tholen = CD: [1] · CD: [3]
B–V = 0.756[1]
U–B = 0.340[1]
10.31±0.33[10] · 10.32[1][3][5][8][7][4]

    It was discovered on 3 May 1951, by IU's Indiana Asteroid Program at Goethe Link Observatory near Brooklyn, Indiana, United States.[11] It was named for Father Theodore M. Hesburgh.[2]

    Orbit and classification

    Hesburgh orbits the Sun in the outer main-belt at a distance of 2.7–3.6 AU once every 5 years and 6 months (2,005 days). Its orbit has an eccentricity of 0.14 and an inclination of 14° with respect to the ecliptic.[1] It was first identified as 1936 ND at Johannesburg Observatory in 1936. The body's observation arc begins at Goethe, five days after its official discovery observation.[11]

    Physical characteristics

    Lightcurve

    In March 2005, a rotational lightcurve of Hesburgh was obtained from photometric observations by American astronomer Brian Warner at his Palmer Divide Observatory in Colorado. Lightcurve analysis gave a longer-than average rotation period of 47.7 hours with a brightness variation of at least 0.18 magnitude (U=2).[9][lower-alpha 1]

    Spectral type

    In the Tholen taxonomy, Hesburgh is a rare CD: spectral type,[1] an intermediary between the common carbonaceous C-type asteroid and the dark D-type asteroid, which is typical among the Jupiter trojans beyond the main-belt. Another asteroid with a CD:-type is 691 Lehigh.

    Diameter and albedo

    According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Hesburgh measures between 32.39 and 41.27 kilometers in diameter and its surface has an albedo between 0.078 and 0.1041.[4][5][6][7][8] The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.1041 and a diameter of 35.55 kilometers with an absolute magnitude of 10.32.[3]

    Naming

    This minor planet was named after American Theodore M. Hesburgh (1917–2015), a priest and president of the University of Notre Dame in Notre Dame, Indiana. He was also a member of the National Science Board and played a decisive role for the founding of the Kitt Peak National Observatory, as well as of the Chilean Cerro Tololo Interamerican Observatory during the 1960s.[2] The approved naming citation was published by the Minor Planet Center on 1 January 1981 (M.P.C. 5688).[12]

    Notes
    1. Lightcurve plot of (1952) Hesburgh, Palmer Divide Observatory, B. D. Warner (2005). Due to a period of nearly 2 days, the photometric observations were more or less in sync with the body's rotation and no lightcurve maxima could be covered by either of the two consecutive observation sessions. The lightcurve amplitude could be larger than 0.18 magnitude.

    References
    1. "JPL Small-Body Database Browser: 1952 Hesburgh (1951 JC)" (2017-06-02 last obs.). Jet Propulsion Laboratory. Retrieved 2 July 2017.
    2. Schmadel, Lutz D. (2007). "(1952) Hesburgh". Dictionary of Minor Planet Names – (1952) Hesburgh. Springer Berlin Heidelberg. p. 157. doi:10.1007/978-3-540-29925-7_1953. ISBN 978-3-540-00238-3.
    3. "LCDB Data for (1952) Hesburgh". Asteroid Lightcurve Database (LCDB). Retrieved 5 April 2017.
    4. 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. Retrieved 5 April 2017.
    5. Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. 12: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode:2004PDSS...12.....T. Retrieved 22 October 2019.
    6. Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv:1406.6645. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. Retrieved 5 April 2017.
    7. 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.
    8. Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. Retrieved 17 October 2019. (online, AcuA catalog p. 153)
    9. Warner, Brian D. (December 2005). "Asteroid lightcurve analysis at the Palmer Divide Observatory – spring 2005". The Minor Planet Bulletin. 32 (4): 90–92. Bibcode:2005MPBu...32...90W. ISSN 1052-8091. Retrieved 5 April 2017.
    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. Retrieved 5 April 2017.
    11. "1952 Hesburgh (1951 JC)". Minor Planet Center. Retrieved 5 April 2017.
    12. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 5 April 2017.

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