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70856 (1999 VD121)
Classification: Main-belt Asteroid          SPK-ID: 2070856
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1879345650362929 3.3884e-08  
a 2.72082640294904 1.5865e-08 au
q 2.20948907637155 9.5287e-08 au
i 14.5104843050869 5.7559e-06 deg
node 31.76432898139121 1.5188e-05 deg
peri 248.3957849238794 2.42e-05 deg
M 304.2184533703098 2.1264e-05 deg
tp 2459254.502345921104
(2021-Feb-09.00234592)
9.7317e-05 TDB
period 1639.266927083145
4.49
1.4337e-05
3.925e-08
d
yr
n .2196103600043781 1.9208e-09 deg/d
Q 3.232163729526529 1.8846e-08 au
  Orbit Determination Parameters
   # obs. used (total)      612  
   data-arc span      10758 days (29.45 yr)  
   first obs. used      1990-11-15  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6038  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 13:41:30  

Additional Information
 Earth MOID = 1.24102 au 
 Jupiter MOID = 2.0291 au 
 T_jup = 3.288 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457503.5 (2016-Apr-25.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1870748113353057 3.3936e-08  
q 2.212376903112995 9.5418e-08 au
tp 2457613.486615055288
(2016-Aug-12.98661506)
9.5386e-05 TDB
node 31.78550579755337 1.5184e-05 deg
peri 248.1856400945394 2.4256e-05 deg
i 14.51049425139456 5.7557e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      612  
   data-arc span      10758 days (29.45 yr)  
   first obs. used      1990-11-15  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6038  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 13:41:30  

Additional Information
 Jupiter MOID = 2.0291 au 
 T_jup = 3.288 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.151676740985797E-15 -3.209280613355823E-15 -9.409761413041583E-13 -5.408319463145216E-15 -1.628521573145216E-13 2.861602938715243E-15
q -3.209280613355823E-15 9.104626416018648E-15 2.675227190818376E-12 1.647257745346809E-14 4.596543100275357E-13 -7.865032937005773E-15
tp -9.409761413041583E-13 2.675227190818376E-12 9.098515610630694E-9 2.349250163146179E-11 1.816313335524322E-9 6.576891400707346E-12
node -5.408319463145216E-15 1.647257745346809E-14 2.349250163146179E-11 2.305594688561291E-10 -2.182229579397126E-10 -2.041170455246996E-11
peri -1.628521573145216E-13 4.596543100275357E-13 1.816313335524322E-9 -2.182229579397126E-10 5.883741131163363E-10 2.119998695704464E-11
i 2.861602938715243E-15 -7.865032937005773E-15 6.576891400707346E-12 -2.041170455246996E-11 2.119998695704464E-11 3.312799909676047E-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 15.1   n/a MPO250838  

70856 (1999 VD121)          Discovered 1999-Nov-04 by Spacewatch at Kitt Peak
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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