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120439 (1978 VJ4)
Classification: Main-belt Asteroid          SPK-ID: 2120439
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1845415862488591 3.9118e-08  
a 2.453151408192986 7.8609e-09 au
q 2.00044295601643 9.771e-08 au
i 4.02859013673268 3.9361e-06 deg
node 235.4543949851586 6.2106e-05 deg
peri 170.2580610164397 6.3327e-05 deg
M 355.6946042644448 1.1695e-05 deg
tp 2459217.284002396885
(2021-Jan-02.78400240)
4.5598e-05 TDB
period 1403.411262054224
3.84
6.7456e-06
1.847e-08
d
yr
n .2565178217773847 1.233e-09 deg/d
Q 2.905859860369542 9.3115e-09 au
  Orbit Determination Parameters
   # obs. used (total)      706  
   data-arc span      15415 days (42.20 yr)  
   first obs. used      1978-11-05  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49084  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 09:25:01  

Additional Information
 Earth MOID = 1.00918 au 
 Jupiter MOID = 2.48446 au 
 T_jup = 3.467 
[ 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 16.3   n/a MPO436581  

120439 (1978 VJ4)          Discovered 1978-Nov-07 by Helin, E. F., Bus, S. J. at Palomar
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

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