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146809 (2001 YZ81)
Classification: Main-belt Asteroid          SPK-ID: 2146809
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1104659111004097 5.9413e-08  
a 2.766294909942359 2.3213e-08 au
q 2.460713622343151 1.6972e-07 au
i 2.840351240059702 5.1979e-06 deg
node 26.63382693431658 9.7071e-05 deg
peri 176.5471960806055 0.00010023 deg
M 277.8436931410708 2.8675e-05 deg
tp 2459384.016939417375
(2021-Jun-18.51693942)
0.00013712 TDB
period 1680.529510988471
4.60
2.1153e-05
5.791e-08
d
yr
n .2142181958996076 2.6963e-09 deg/d
Q 3.071876197541567 2.5777e-08 au
  Orbit Determination Parameters
   # obs. used (total)      426  
   data-arc span      7984 days (21.86 yr)  
   first obs. used      1998-03-20  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62949  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 08:39:31  

Additional Information
 Earth MOID = 1.45717 au 
 Jupiter MOID = 1.88619 au 
 T_jup = 3.329 
[ 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 15.9   n/a MPC48179  

146809 (2001 YZ81)          Discovered 2001-Dec-18 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

[ show close-approach data ]
Alternate Designations
 2001 YZ81 = 1998 FP44 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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