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91980 (1999 VD98)
Classification: Main-belt Asteroid          SPK-ID: 2091980
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .01560714190724671 4.657e-08  
a 3.047868092300006 2.3195e-08 au
q 3.00029958246891 1.3706e-07 au
i 10.30345133203917 5.8601e-06 deg
node 49.68620328767164 2.2682e-05 deg
peri 204.6148680030183 0.0001719 deg
M 171.1422591420484 0.00017136 deg
tp 2458472.552195723388
(2018-Dec-20.05219572)
0.00092515 TDB
period 1943.536396019548
5.32
2.2186e-05
6.074e-08
d
yr
n .1852293585740388 2.1144e-09 deg/d
Q 3.095436602131101 2.3557e-08 au
  Orbit Determination Parameters
   # obs. used (total)      908  
   data-arc span      9094 days (24.90 yr)  
   first obs. used      1996-03-21  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54109  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:41:53  

Additional Information
 Earth MOID = 1.98964 au 
 Jupiter MOID = 1.88705 au 
 T_jup = 3.213 
[ 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 14.52   n/a E2021B10  

91980 (1999 VD98)          Discovered 1999-Nov-09 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

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