2098 Zyskin

2098 Zyskin, provisional designation 1972 QE, is a vestoid asteroid from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered by Russian–Ukrainian astronomer Lyudmila Zhuravleva at the Crimean Astrophysical Observatory in Nauchnyj on 18 August 1972.[10] The asteroid was named for surgeon Lev Zyskin

2098 Zyskin
Discovery [1]
Discovered byL. V. Zhuravleva
Discovery siteCrimean Astrophysical Obs.
Discovery date18 August 1972
Designations
(2098) Zyskin
Named after
Lev Zyskin (surgeon)[2]
1972 QE · 1934 NE
1957 QH
main-belt · Vestoid [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc58.80 yr (21,476 days)
Aphelion2.7306 AU
Perihelion2.1167 AU
2.4236 AU
Eccentricity0.1267
3.77 yr (1,378 days)
338.14°
Inclination6.4956°
337.74°
354.48°
Physical characteristics
Dimensions8.91 km (calculated)[3]
10.44±2.92 km[4]
11.35±0.20 km[5]
12.731±0.185 km[6]
12.774±0.047 km[7]
3.9201±0.0007 h[8]
0.1084±0.0164[7]
0.165±0.028[5][6]
0.18±0.08[4]
0.20 (assumed)[3]
S [3]
12.30[4][5] · 12.4[1] · 12.5[7] · 12.165±0.001 (R)[8] · 12.56±0.22[9] · 12.61[3]

    Orbit and classification

    Zyskin is a member of the Vesta family. Asteroids with these spectral and orbital characteristics are thought to have all originated from the Rheasilvia crater, a large impact crater on the south-polar surface of 4 Vesta, which is the main-belt's second-most-massive asteroid after 1 Ceres. It orbits the Sun in the inner main-belt at a distance of 2.1–2.7 AU once every 3 years and 9 months (1,378 days). Its orbit has an eccentricity of 0.13 and an inclination of 6° with respect to the ecliptic.[1]

    First identified as 1934 NE at Johannesburg Observatory, the body's first used observation was taken at Goethe Link Observatory in 1957, when it was identified as 1957 QH, extending the asteroid's observation arc by 15 years prior to its official discovery observation.[10]

    Physical characteristics

    In October 2010, a rotational lightcurve of Zyskin was obtained from photometric observations made at the Palomar Transient Factory in California. Lightcurve analysis gave a rotation period of 3.920 hours with a brightness variation of 0.08 magnitude (U=2).[8]

    Diameter and albedo

    According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Zyskin measures between 10.44 and 12.8 kilometers in diameter, and its surface has an albedo between 0.10 and 0.18.[4][5][6][7] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for S-type asteroids of 0.20 and calculates a diameter of 8.9 kilometers with an absolute magnitude of 12.61.[3]

    Naming

    This minor planet was named in honor of Lev Yur'evich Zyskin, professor at the Crimean Medical Institute, who was head of its Pulmonary Surgery Center.[2] Lyudmila Zhuravleva also discovered 1858 Lobachevsk on the same day she discovered 2098 Zyskin. She is a prolific astronomer with more than 200 minor planets discovered between 1972 and 1992 and (still) ranks in 61st position on the Minor Planet Center's discoverer-list as of 2015.[11] The official naming citation was published by the Minor Planet Center on 1 April 1980 (M.P.C. 5283).[12]

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    References
    1. "JPL Small-Body Database Browser: 2098 Zyskin (1972 QE)" (2016-06-17 last obs.). Jet Propulsion Laboratory. Retrieved 11 June 2017.
    2. Schmadel, Lutz D. (2007). "(2098) Zyskin". Dictionary of Minor Planet Names – (2098) Zyskin. Springer Berlin Heidelberg. p. 170. doi:10.1007/978-3-540-29925-7_2099. ISBN 978-3-540-00238-3.
    3. "LCDB Data for (2098) Zyskin". Asteroid Lightcurve Database (LCDB). Retrieved 7 December 2016.
    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.
    5. 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:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 7 December 2016.
    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 7 December 2016.
    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. Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal. 150 (3): 35. arXiv:1504.04041. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved 7 December 2016.
    9. 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 7 December 2016.
    10. "2098 Zyskin (1972 QE)". Minor Planet Center. Retrieved 7 December 2016.
    11. "Minor Planet Discoverers (ranking by discoveries)". Minor Planet Center. Retrieved 10 November 2015.
    12. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 7 December 2016.

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