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181994 (1999 VO161)
Classification: Main-belt Asteroid          SPK-ID: 2181994
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1914509401379795 4.375e-08  
a 2.350242092452404 9.5528e-09 au
q 1.900286034300539 1.0324e-07 au
i 4.180791710135138 4.8209e-06 deg
node 248.8355213372918 6.0752e-05 deg
peri 173.6540344339447 6.1852e-05 deg
M 300.7763951776079 1.1826e-05 deg
tp 2459417.000879434858
(2021-Jul-21.50087943)
4.3778e-05 TDB
period 1316.034659326921
3.60
8.0238e-06
2.197e-08
d
yr
n .2735490265766407 1.6678e-09 deg/d
Q 2.800198150604269 1.1382e-08 au
  Orbit Determination Parameters
   # obs. used (total)      385  
   data-arc span      7674 days (21.01 yr)  
   first obs. used      1999-10-14  
   last obs. used      2020-10-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59353  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:55  

Additional Information
 Earth MOID = .912837 au 
 Jupiter MOID = 2.52056 au 
 T_jup = 3.530 
[ 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 17.0   n/a MPO268155  

181994 (1999 VO161)          Discovered 1999-Nov-14 by LINEAR at Socorro
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

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