Astronomy:57868 Pupin

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57868 Pupin
Discovery [1]
Discovered byNEAT
Discovery sitePalomar Obs.
Discovery date17 December 2001
Designations
(57868) Pupin
Named afterMihajlo Pupin
(Serbian–American physicist)[2]
2001 YD · 1997 WU46
Minor planet categorymain-belt · (inner) [3]
Erigone [4]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc19.26 yr (7,033 days)
|{{{apsis}}}|helion}}2.9874 AU
|{{{apsis}}}|helion}}1.7752 AU
2.3813 AU
Eccentricity0.2545
Orbital period3.67 yr (1,342 days)
Mean anomaly198.82°
Inclination4.2274°
Longitude of ascending node287.71°
45.971°
Physical characteristics
Dimensions2.59 km (calculated)[3]
3.42±0.59 km[5]
5.725±0.107 km[6][7]
Rotation period108.10±0.04 h[8]
Geometric albedo0.0448±0.0065[6]
0.045±0.006[7]
0.09±0.04[5]
0.20 (assumed)[3]
C [9] · S (assumed)[3]
Absolute magnitude (H)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]

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 ({{{1}}}).[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]

References

  1. ↑ 1.0 1.1 1.2 1.3 "JPL Small-Body Database Browser: 57868 Pupin (2001 YD)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2057868. 
  2. ↑ 2.0 2.1 2.2 2.3 "57868 Pupin (2001 YD)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=57868. 
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 "LCDB Data for (57868) Pupin". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=57868%7CPupin. 
  4. ↑ 4.0 4.1 "Asteroid 57868 Pupin – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=57868+Pupin#Asteroid%2057868%20PupinEAR-A-VARGBDET-5-NESVORNYFAM-V3.0. 
  5. ↑ 5.0 5.1 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. doi:10.3847/0004-6256/152/3/63. Bibcode: 2016AJ....152...63N. 
  6. ↑ 6.0 6.1 6.2 6.3 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. doi:10.1088/0004-637X/741/2/90. Bibcode: 2011ApJ...741...90M. 
  7. ↑ 7.0 7.1 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. doi:10.1088/0004-637X/741/2/68. Bibcode: 2011ApJ...741...68M. 
  8. ↑ 8.0 8.1 8.2 Benishek, Vladimir; Pilcher, Frederick (January 2016). "Rotation Period and H-G Parameters of (57868) 2001 YD". The Minor Planet Bulletin 43 (1): 100–101. ISSN 1052-8091. Bibcode: 2016MPBu...43..100B. 
  9. ↑ 9.0 9.1 9.2 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. doi:10.1016/j.icarus.2015.08.007. Bibcode: 2015Icar..261...34V. 
  10. ↑ Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 9780816532131. Bibcode: 2015aste.book..297N. 
  11. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html. 

External links



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