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1057 Wanda (1925 QB)
Classification: Main-belt Asteroid          SPK-ID: 2001057
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2467247467341376 4.8954e-08  
a 2.89441719749807 9.2191e-09 au
q 2.180292847502427 1.3913e-07 au
i 3.540259541289358 3.8425e-06 deg
node 257.8945712296484 6.6577e-05 deg
peri 114.6948599565024 6.6905e-05 deg
M 63.70989994285708 7.3794e-06 deg
tp 2458682.194205980071
(2019-Jul-17.69420598)
3.6358e-05 TDB
period 1798.622913392631
4.92
8.5933e-06
2.353e-08
d
yr
n .2001531267723897 9.5627e-10 deg/d
Q 3.608541547493714 1.1494e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3120  
   data-arc span      34788 days (95.24 yr)  
   first obs. used      1925-08-19  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44032  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:58:00  

Additional Information
 Earth MOID = 1.18372 au 
 Jupiter MOID = 1.88698 au 
 T_jup = 3.241 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.0   n/a MPO502163 IRAS observations used: 19
diameter diameter 44.657 km 0.510 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 29.173 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Binzel, R.P. (1987) Icarus 72, 135-208.]
[Pray, D. (2005) Minor Planet Bull. 32, 48-51.]
[Polakis, T. (2020) Minor Planet Bull. 47, 94-101.]
geometric albedo albedo 0.028   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

1057 Wanda (1925 QB)          Discovered 1925-Aug-16 by Shajn, G. at Simeis
Independent discovery Aug. 19 by K. Reinmuth, Heidelberg, was announced first.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1925 QB = 1937 AF = 1950 QY = 1965 WG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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