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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457773.5 (2017-Jan-20.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2190863271174213 4.0095e-08  
q 2.438203945138382 1.3375e-07 au
tp 2457415.234648405738
(2016-Jan-27.73464841)
7.3358e-05 TDB
node 206.3344165948289 2.4839e-05 deg
peri 143.9534436413445 2.7932e-05 deg
i 9.854178795037752 4.9054e-06 deg
  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
 Jupiter MOID = 1.72239 au 
 T_jup = 3.156 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.607611394354676E-15 -5.324480492890167E-15 -2.500978396794792E-13 -2.450548960326912E-16 2.126873814648462E-14 -1.080649020613336E-15
q -5.324480492890167E-15 1.788973129232652E-14 1.293084771277145E-12 -9.043222977172488E-16 1.760667816162135E-14 5.288814878972264E-15
tp -2.500978396794792E-13 1.293084771277145E-12 5.381456747012664E-9 -2.020319030846567E-11 9.558936556052743E-10 9.080017235687644E-12
node -2.450548960326912E-16 -9.043222977172488E-16 -2.020319030846567E-11 6.1697619467174E-10 -6.112028641591092E-10 4.324032777881085E-11
peri 2.126873814648462E-14 1.760667816162135E-14 9.558936556052743E-10 -6.112028641591092E-10 7.801998378342517E-10 -4.103781298796687E-11
i -1.080649020613336E-15 5.288814878972264E-15 9.080017235687644E-12 4.324032777881085E-11 -4.103781298796687E-11 2.406273841085979E-11

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

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