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10901 (1997 WS21)
Classification: Main-belt Asteroid          SPK-ID: 2010901
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1195651494527483 3.3295e-08  
a 2.218842861120341 5.9048e-09 au
q 1.953546582818324 7.4342e-08 au
i 2.880976092698883 3.0926e-06 deg
node 167.2613424614748 6.6977e-05 deg
peri 248.3090441346085 6.842e-05 deg
M 4.852040970202066 1.2491e-05 deg
tp 2459184.229151354426
(2020-Nov-30.72915135)
4.1901e-05 TDB
period 1207.2250725786
3.31
4.819e-06
1.319e-08
d
yr
n .298204542116616 1.1904e-09 deg/d
Q 2.484139139422358 6.6108e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1573  
   data-arc span      11129 days (30.47 yr)  
   first obs. used      1990-09-23  
   last obs. used      2021-03-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48031  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 22:24:42  

Additional Information
 Earth MOID = .966389 au 
 Jupiter MOID = 2.81191 au 
 T_jup = 3.640 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.44   n/a MPCxxxxx  
diameter diameter 2.315 km 0.591 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.301   0.121 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

[ show close-approach data ]
Alternate Designations
 1997 WS21 = 1990 SJ13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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