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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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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1845567999849984 3.9612e-08  
a 2.453459346129441 1.0314e-08 au
q 2.000656740314505 9.9629e-08 au
i 4.028490874622978 4.2072e-06 deg
node 235.4577121466315 8.0657e-05 deg
peri 170.2003149301896 8.2103e-05 deg
M 304.4372549142378 1.7426e-05 deg
tp 2459217.144625339563
(2021-Jan-02.64462534)
6.866e-05 TDB
period 1403.675520384392
3.84
8.8514e-06
2.423e-08
d
yr
n .2564695292979214 1.6173e-09 deg/d
Q 2.906261951944377 1.2218e-08 au
  Orbit Determination Parameters
   # obs. used (total)      468  
   data-arc span      15296 days (41.88 yr)  
   first obs. used      1978-11-05  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54745  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 20:14:51  

Additional Information
 Earth MOID = 1.0103 au 
 Jupiter MOID = 2.4834 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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