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129993 (1999 VN18)
Classification: Main-belt Asteroid          SPK-ID: 2129993
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1234409520512753 3.6904e-08  
a 2.404878720894615 1.2907e-08 au
q 2.10801820201953 8.9622e-08 au
i 1.575736511654158 3.7624e-06 deg
node 271.4900414956558 0.00018088 deg
peri 42.58145842979932 0.00018266 deg
M 252.6919970872389 2.9545e-05 deg
tp 2459406.539054564216
(2021-Jul-11.03905456)
0.00011389 TDB
period 1362.191594991792
3.73
1.0966e-05
3.002e-08
d
yr
n .264280003872854 2.1276e-09 deg/d
Q 2.7017392397697 1.45e-08 au
  Orbit Determination Parameters
   # obs. used (total)      670  
   data-arc span      9016 days (24.68 yr)  
   first obs. used      1995-08-22  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57488  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 21:48:45  

Additional Information
 Earth MOID = 1.09438 au 
 Jupiter MOID = 2.5367 au 
 T_jup = 3.512 
[ 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 15.8   n/a MPO453778  
diameter diameter 3.216 km 0.114 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.082   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

129993 (1999 VN18)          Discovered 1999-Nov-02 by Spacewatch at Kitt Peak
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17

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