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13909 (1978 VD8)
Classification: Main-belt Asteroid          SPK-ID: 2013909
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05397331092801711 3.3911e-08  
a 2.257459821253097 8.0469e-09 au
q 2.135617240413097 7.646e-08 au
i 3.263604282842204 3.8746e-06 deg
node 58.10034224494467 6.9758e-05 deg
peri 254.0325185843968 7.9628e-05 deg
M 196.8702881156145 3.8922e-05 deg
tp 2459561.882718589647
(2021-Dec-13.38271859)
0.00013415 TDB
period 1238.87780072526
3.39
6.6241e-06
1.814e-08
d
yr
n .2905855604073702 1.5537e-09 deg/d
Q 2.379302402093096 8.4812e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1273  
   data-arc span      15065 days (41.25 yr)  
   first obs. used      1978-11-05  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5114  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:47:39  

Additional Information
 Earth MOID = 1.12398 au 
 Jupiter MOID = 2.73175 au 
 T_jup = 3.618 
[ 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 15.7   n/a MPO347635  

13909 (1978 VD8)          Discovered 1978-Nov-07 by Helin, E. F., Bus, S. J. at Palomar
Reference: 20000320/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1978 VD8 = 1987 KJ4 = 1998 SG128 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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