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181997 (1999 VR180)
Classification: Main-belt Asteroid          SPK-ID: 2181997
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1761579197394727 8.2068e-08  
a 2.347650376714546 1.5241e-08 au
q 1.934093170076922 1.9509e-07 au
i 12.52485814165551 7.1589e-06 deg
node 25.52773375913211 2.3575e-05 deg
peri 358.565532730184 3.1246e-05 deg
M 313.922998590111 1.7478e-05 deg
tp 2459368.662929640509
(2021-Jun-03.16292964)
6.4084e-05 TDB
period 1313.858385272235
3.60
1.2794e-05
3.503e-08
d
yr
n .2740021329813312 2.6683e-09 deg/d
Q 2.76120758335217 1.7926e-08 au
  Orbit Determination Parameters
   # obs. used (total)      249  
   data-arc span      9149 days (25.05 yr)  
   first obs. used      1994-04-06  
   last obs. used      2019-04-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55914  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:56  

Additional Information
 Earth MOID = .93669 au 
 Jupiter MOID = 2.69684 au 
 T_jup = 3.507 
[ 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 MPO334100  

181997 (1999 VR180)          Discovered 1999-Nov-06 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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