57868 Pupin

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57868 Pupin
Discovery  [1]
Discovered by NEAT
Discovery site Palomar Obs.
Discovery date17 December 2001
Designations
(57868) Pupin
Named after
 Mihajlo Pupin
(Serbian–American physicist) [2]
2001 YD ·1997 WU46
main-belt  ·(inner)  [3]
Erigone   [4]
Orbital characteristics   [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 19.26 yr (7,033 days)
Aphelion 2.9874 AU
Perihelion 1.7752 AU
2.3813 AU
Eccentricity 0.2545
3.67 yr (1,342 days)
198.82°
Inclination 4.2274°
287.71°
45.971°
Physical characteristics
Dimensions2.59 km (calculated) [3]
3.42±0.59 km [5]
5.725±0.107 km [6] [7]
108.10±0.04 h [8]
0.0448±0.0065 [6]
0.045±0.006 [7]
0.09±0.04 [5]
0.20 (assumed) [3]
C   [9]  · S (assumed) [3]
15.3 [1] [3]  ·15.2 [6]  ·15.47±0.04 [8]  ·15.67±0.14 [9]

    57868 Pupin (provisional designation 2001 YD) is a dark Erigonian asteroid and slow rotator from the inner regions of the asteroid belt, approximately 3.5 kilometers in diameter. It was discovered on December 17, 2001, by astronomers of Near-Earth Asteroid Tracking (NEAT) at the Palomar Observatory in California, United States. The asteroid was named after Serbian–American physicist Mihajlo Pupin. [2]

    Contents

    Orbit and classification

    Pupin is a member of the Erigone family, named after 163 Erigone. [4] It orbits the Sun in the inner main-belt at a distance of 1.8–3.0  AU once every 3 years and 8 months (1,342 days). Its orbit has an eccentricity of 0.25 and an inclination of 4° with respect to the ecliptic. [1] The body's observation arc begins with its first identification as 1997 WU46 at Lincoln Laboratory ETS in November 1997. [2]

    Physical characteristics

    Based on PanSTARRS photometric survey, Pupin is a carbonaceous C-type asteroid, [9] while the Erigone family's overall spectral type is that of a C- and X-type (CX). [10] : 23 

    Slow rotator

    In September 2015, a first rotational lightcurve of Pupin was obtained by astronomer Vladimir Benishek at Sopot Astronomical Observatory ( K90 ), Serbia, and by American astronomer Frederick Pilcher at his Organ Mesa Observatory ( G50 ) in New Mexico. It showed a rotation period of 108.10±0.04 hours with a brightness amplitude of 0.93 in magnitude ( U=3- ). [8] This makes it a slow rotator, as asteroids of this size typically rotate within less than 20 hours once around their axis.

    Diameter and albedo

    According to the survey carried out by the NEOWISE mission of NASA's space-based Wide-field Infrared Survey Explorer, Pupin measures 3.42 and 5.7 kilometers in diameter and its surface has an albedo of 0.045 and 0.09, respectively. [6] However, the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20, and calculates a diameter of 2.6 kilometers using an absolute magnitude of 15.3. [3]

    Naming

    This minor planet was named in honor of Serbian–American physicist and humanitarian, Mihajlo Pupin (1858–1935). He greatly improved long-distance telephone transmission and the sensitivity of X-ray detection, and worked for Serbian emigres. The asteroid's name was suggested by the above-mentioned astronomers Vladimir Benishek and Frederick Pilcher. [2] The official naming citation was published by the Minor Planet Center on 23 March 2016 ( M.P.C. 99354). [11]

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    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 57868 Pupin (2001 YD)" (2017-02-27 last obs.). Jet Propulsion Laboratory . Retrieved 24 September 2017.
    2. 1 2 3 4 "57868 Pupin (2001 YD)". Minor Planet Center. Retrieved 5 April 2016.
    3. 1 2 3 4 5 6 "LCDB Data for (57868) Pupin". Asteroid Lightcurve Database (LCDB). Retrieved 5 April 2016.
    4. 1 2 "Asteroid 57868 Pupin – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 27 October 2019.
    5. 1 2 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 .
    6. 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". The Astrophysical Journal. 741 (2): 25. arXiv: 1109.6407 . Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90.
    7. 1 2 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.
    8. 1 2 3 Benishek, Vladimir; Pilcher, Frederick (January 2016). "Rotation Period and H-G Parameters of (57868) 2001 YD". The Minor Planet Bulletin. 43 (1): 100–101. Bibcode:2016MPBu...43..100B. ISSN   1052-8091.
    9. 1 2 3 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.
    10. ↑ 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.
    11. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 24 September 2017.
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