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118447 (1999 VM81)
Classification: Main-belt Asteroid          SPK-ID: 2118447
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2191489214084316 4.0076e-08  
a 3.122891742951996 2.2502e-08 au
q 2.438513385808769 1.3373e-07 au
i 9.850660556550535 4.9035e-06 deg
node 206.324289668616 2.4854e-05 deg
peri 143.5878179285389 2.7941e-05 deg
M 283.7673329970595 1.4572e-05 deg
tp 2459427.347197173833
(2021-Jul-31.84719717)
8.4335e-05 TDB
period 2015.736783505852
5.52
2.1786e-05
5.965e-08
d
yr
n .1785947465689808 1.9303e-09 deg/d
Q 3.807270100095223 2.7433e-08 au
  Orbit Determination Parameters
   # obs. used (total)      582  
   data-arc span      21856 days (59.84 yr)  
   first obs. used      1960-10-17  
   last obs. used      2020-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5031  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 18:11:32  

Additional Information
 Earth MOID = 1.44162 au 
 Jupiter MOID = 1.72239 au 
 T_jup = 3.156 
[ 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 15.0   n/a MPO396014  
diameter diameter 3.897 km 0.158 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.140   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

118447 (1999 VM81)          Discovered 1999-Nov-05 by LINEAR at Socorro
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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