| Discovery[1] | |
|---|---|
| Discovered by | G. Shajn |
| Discovery site | Simeiz Obs. |
| Discovery date | 16 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 arc | 91.88 yr (33,558 days) |
| Aphelion | 3.6116AU |
| Perihelion | 2.1853 AU |
| 2.8984 AU | |
| Eccentricity | 0.2460 |
| 4.93yr (1,802 days) | |
| 224.08° | |
| 0° 11m 58.92s / day | |
| Inclination | 3.5319° |
| 257.95° | |
| 114.20° | |
| Physical characteristics | |
| Dimensions | 40.41 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] |
| 24h[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] | |
1057 Wanda, provisional designation1925 QB, is a carbonaceous backgroundasteroid from the outer region of theasteroid belt, approximately 43 kilometers in diameter. It was discovered byGrigory Shajn at theSimeiz Observatory in 1925, and later named after Polish–Soviet writerWanda Wasilewska.[2][15] The asteroid has arotation period of 28.8 hours.[3]
Wanda was discovered on its first recorded observation on 16 August 1925, by Soviet astronomerGrigory Shajn at theSimeiz Observatory on the Crimean peninsula.[15] Three nights later, it was independently discovered by German astronomerKarl Reinmuth atHeidelberg Observatory on 19 August 1925.[2] TheMinor Planet Center only recognizes the first discoverer.[15]
Wanda is a non-family asteroid from the main belt'sbackground population.[4] It orbits the Sun in theouter 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 aneccentricity of 0.25 and aninclination of 4° with respect to theecliptic.[1] The body'sobservation arc begins at Heidelberg Observatory, just three nights after its official discovery at Simeiz.[15]
Wanda has been characterized as a carbonaceousC-type asteroid byPan-STARRS' photometric survey.[3][14]
Three rotationallightcurves ofWanda 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 averagerotation period of 28.8 hours with a brightness amplitude between 0.14 and 0.41magnitude (U=2).[3][13]
According to the surveys carried out by the Infrared Astronomical SatelliteIRAS, the JapaneseAkari satellite and theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Wanda measures between 40.47 and 48.85 kilometers in diameter and its surface has a lowalbedo between 0.0279 and 0.0446.[5][6][7][8][9][10]
TheCollaborative Asteroid Lightcurve Link derives an albedo of 0.0415 and a diameter of 40.41 kilometers based on anabsolute magnitude of 11.04.[3]
Thisminor planet was named after Polish–Soviet novelistWanda 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 ofKraków (AN 229, 279).[2]
