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48813 (1997 WJ1)
Classification: Main-belt Asteroid          SPK-ID: 2048813
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1016087040740222 5.1639e-08  
a 2.982679626711928 2.0803e-08 au
q 2.679613415173741 1.5431e-07 au
i 10.13296102569133 6.9696e-06 deg
node 14.95591360524059 2.7933e-05 deg
peri 29.53253930101199 4.1827e-05 deg
M 122.2490942029061 3.1085e-05 deg
tp 2458361.572637223094
(2018-Aug-31.07263722)
0.00016117 TDB
period 1881.517831272555
5.15
1.9684e-05
5.389e-08
d
yr
n .1913348861310104 2.0017e-09 deg/d
Q 3.285745838250115 2.2917e-08 au
  Orbit Determination Parameters
   # obs. used (total)      798  
   data-arc span      8130 days (22.26 yr)  
   first obs. used      1997-10-30  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56848  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 09:14:14  

Additional Information
 Earth MOID = 1.69264 au 
 Jupiter MOID = 2.17733 au 
 T_jup = 3.227 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.5   n/a MPO459185  
diameter diameter 4.249 km 1.281 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.224   0.192 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48813 (1997 WJ1)          Discovered 1997-Nov-19 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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