1057 Wanda

1057 Wanda, provisional designation 1925 QB, is a carbonaceous background asteroid from the outer region of the asteroid belt, approximately 43 kilometers in diameter. It was discovered by Grigory Shajn at the Simeiz Observatory in 1925, and later named after Polish–Soviet writer Wanda Wasilewska.[2][15] The asteroid has a rotation period of 28.8 hours.[3]

1057 Wanda
Discovery[1]
Discovered byG. Shajn
Discovery siteSimeiz Obs.
Discovery date16 August 1925
Designations
(1057) Wanda
Named after
Wanda Wasilewska[2]
(Polish–Soviet writer)
1925 QB · 1937 AF
1950 QY · 1965 WG
main-belt · (outer)[3]
background[4]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc91.88 yr (33,558 days)
Aphelion3.6116 AU
Perihelion2.1853 AU
2.8984 AU
Eccentricity0.2460
4.93 yr (1,802 days)
224.08°
0° 11m 58.92s / day
Inclination3.5319°
257.95°
114.20°
Physical characteristics
Dimensions40.41 km (derived)[3]
40.47±2.1 km[5]
42.72±15.73 km[6]
42.809±0.834 km[7]
44.39±0.88 km[8]
44.657±0.510 km[9]
48.85±6.58 km[10]
24 h[11]
28.49±0.03 h[12]
28.8 h[13]
0.0279±0.0035[7]
0.03±0.01[10]
0.03±0.02[6]
0.037±0.007[9]
0.038±0.002[8]
0.0415 (derived)[3]
0.0446±0.005[5]
C[3][14]
10.96[1][5][6][8][9] · 11.01[10] · 11.04[3][7][13] · 11.04±0.21[14]

    Discovery

    Wanda was discovered on its first recorded observation on 16 August 1925, by Soviet astronomer Grigory Shajn at the Simeiz Observatory on the Crimean peninsula.[15] Three nights later, it was independently discovered by German astronomer Karl Reinmuth at Heidelberg Observatory on 19 August 1925.[2] The Minor Planet Center only recognizes the first discoverer.[15]

    Orbit and classification

    Wanda is a non-family asteroid from the main belt's background population.[4] It orbits the Sun in the outer asteroid belt at a distance of 2.2–3.6 AU once every 4 years and 11 months (1,802 days; semi-major axis of 2.90 AU). 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 at Heidelberg Observatory, just three nights after its official discovery at Simeiz.[15]

    Physical characteristics

    Wanda has been characterized as a carbonaceous C-type asteroid by Pan-STARRS' photometric survey.[3][14]

    Rotation period

    Three rotational lightcurves of Wanda have been obtained from photometric observations by astronomers Eric Barbotin (2004), Donald Pray (2004), Richard Binzel (1984), respectively (U=1/2/2).[11][12][13] The consolidated lightcurve analysis gave a longer-than average rotation period of 28.8 hours with a brightness amplitude between 0.14 and 0.41 magnitude (U=2).[3][13]

    Diameter and albedo

    According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Wanda measures between 40.47 and 48.85 kilometers in diameter and its surface has a low albedo between 0.0279 and 0.0446.[5][6][7][8][9][10]

    The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0415 and a diameter of 40.41 kilometers based on an absolute magnitude of 11.04.[3]

    Naming

    This minor planet was named after Polish–Soviet novelist Wanda Wasilewska (1905–1964), also known by her Russian name Vanda Lvovna Vasilevskaya. Another interpretation of the asteroid's name is derived from mythology and ancient Polish annals, and refers to the legendary daughter of Krak, Wanda, who founded the city of Kraków (AN 229, 279).[2]

    References
    1. "JPL Small-Body Database Browser: 1057 Wanda (1925 QB)" (2017-07-05 last obs.). Jet Propulsion Laboratory. Retrieved 2 February 2018.
    2. Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (1057) Wanda. Springer Berlin Heidelberg. pp. 90–91. ISBN 978-3-540-00238-3.
    3. "LCDB Data for (1057) Wanda". Asteroid Lightcurve Database (LCDB). Retrieved 2 February 2018.
    4. "Asteroid 1057 Wanda – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 26 October 2019.
    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. 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.
    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. (online, AcuA catalog p. 153)
    9. 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.
    10. 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.
    11. Behrend, Raoul. "Asteroids and comets rotation curves – (1057) Wanda". Geneva Observatory. Retrieved 2 February 2018.
    12. Pray, Donald P. (September 2005). "Lightcurve analysis of asteroids 106, 752, 847, 1057, 1630, 1670, 1927 1936, 2426, 2612, 2647, 4087, 5635, 5692, and 6235". The Minor Planet Bulletin. 32 (3): 48–51. Bibcode:2005MPBu...32...48P. ISSN 1052-8091.
    13. Binzel, R. P. (October 1987). "A photoelectric survey of 130 asteroids". Icarus. 72 (1): 135–208. Bibcode:1987Icar...72..135B. doi:10.1016/0019-1035(87)90125-4. ISSN 0019-1035.
    14. 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.
    15. "1057 Wanda (1925 QB)". Minor Planet Center. Retrieved 2 February 2018.
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