Wikipedia

4997 Ksana

4997 Ksana, provisional designation 1986 TM, is a carbonaceous Palladian asteroid from the outer region of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 6 October 1986, by Russian astronomer Lyudmila Karachkina at Crimean Astrophysical Observatory on the Crimean peninsula.[12] The asteroid was named for Russian chemist Kseniya Nessler.[2]

4997 Ksana
Discovery [1]
Discovered byL. G. Karachkina
Discovery siteCrimean Astrophysical Obs.
Discovery date6 October 1986
Designations
(4997) Ksana
Named after
Kseniya A. Nessler
(Russian chemist)[2]
1986 TM
main-belt · (outer) [3]
Pallas [4]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc30.57 yr (11,165 days)
Aphelion3.8162 AU
Perihelion1.9285 AU
2.8723 AU
Eccentricity0.3286
4.87 yr (1,778 days)
97.646°
0° 12m 9s / day
Inclination32.828°
10.897°
57.447°
Physical characteristics
Dimensions7.36±2.79 km[5]
9.860±0.160 km[6][7]
9.97±0.33 km[8]
10±1 km[9]
14.64 km (calculated)[3]
3.4342±0.0003 h[10]
0.057 (assumed)[3]
0.16±0.03[9]
0.271±0.206[5]
0.312±0.022[8]
0.3157±0.0548[7]
0.316±0.055[6]
SMASS = B [1] · B [3]
11.9[3][7][8] · 12.70[5][9] · 12.79±0.30[11] · 13.0[1]

Orbit and classification

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Ksana is a small member of the Pallas family (801), a small asteroid family of carbonaceous B-type asteroids.[4][13]: 23  It orbits the Sun in the outer main-belt at a distance of 1.9–3.8 AU once every 4 years and 10 months (1,778 days). Its orbit has an eccentricity of 0.33 and an inclination of 33° with respect to the ecliptic.[1] As no precoveries were taken, the asteroid's observation arc begins with its discovery observation in 1986.[12]

Physical characteristics

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On the SMASS taxonomic scheme, Ksana is a B-type asteroid, which are primitive, volatile-rich asteroids.[1] This also agrees with the overall spectral type of the Pallas family.[13]: 23 

Diameter and albedo

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According to the surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Ksana measures between 7.36 and 10±1 kilometers in diameter and its surface has an albedo between 0.16 and 0.316.[5][6][7][8][9]

The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a larger diameter of 14.64 kilometers with an absolute magnitude of 12.9.[3]

Rotation period

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In February 2007, a rotational lightcurve of Ksana was obtained from photometric observations by Italian astronomer Federico Manzini at the SAS observatory in Novara, Italy. It gave it a rotation period of 3.4342±0.0003 hours with a brightness variation of 0.21 in magnitude (U=2).[10]

Naming

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This minor planet was named by the discoverer for his friend, the Russian chemist Kseniya Andreevna Nessler, who has been an advocate against environmental pollution. The asteroid's name "Ksana" is a variation of Kseniya (Ксения), the equivalent to the romanized Xenia.[2] The official naming citation was published by the Minor Planet Center on 1 September 1993 (M.P.C. 22505 and 22609).[14]

References

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  1. ^ a b c d e f "JPL Small-Body Database Browser: 4997 Ksana (1986 TM)" (2017-05-01 last obs.). Jet Propulsion Laboratory. Archived from the original on 17 September 2020. Retrieved 20 June 2017.
  2. ^ a b c Schmadel, Lutz D. (2007). "(4997) Ksana". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 430. doi:10.1007/978-3-540-29925-7_4870. ISBN 978-3-540-00238-3.
  3. ^ a b c d e f "LCDB Data for (4997) Ksana". Asteroid Lightcurve Database (LCDB). Retrieved 30 October 2016.
  4. ^ a b "Asteroid 4997 Ksana – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 27 October 2019.
  5. ^ a b c d 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 30 October 2016.
  6. ^ a b c 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. Retrieved 30 October 2016.
  7. ^ a b c d 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. ^ a b c d 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. (online, AcuA catalog p. 153)
  9. ^ a b c d Alí-Lagoa, V.; de León, J.; Licandro, J.; Delbó, M.; Campins, H.; Pinilla-Alonso, N.; et al. (June 2013). "Physical properties of B-type asteroids from WISE data". Astronomy and Astrophysics. 554: 16. arXiv:1303.5487. Bibcode:2013A&A...554A..71A. doi:10.1051/0004-6361/201220680. Retrieved 30 October 2016.
  10. ^ a b Behrend, Raoul. "Asteroids and comets rotation curves – (4997) Ksana". Geneva Observatory. Retrieved 30 October 2016.
  11. ^ 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 30 October 2016.
  12. ^ a b "4997 Ksana (1986 TM)". Minor Planet Center. Retrieved 30 October 2016.
  13. ^ a b 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 978-0-8165-3213-1.
  14. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 30 October 2016.
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