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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05382038410752649 3.5626e-08  
a 2.2574627895916 8.7957e-09 au
q 2.135965275147332 8.1332e-08 au
i 3.263951112731126 4.2593e-06 deg
node 58.10541093851172 7.5493e-05 deg
peri 253.8458947312832 8.8005e-05 deg
M 80.84457903450091 4.4705e-05 deg
tp 2458322.286800502856
(2018-Jul-22.78680050)
0.0001541 TDB
period 1238.880244230467
3.39
7.2405e-06
1.982e-08
d
yr
n .290584987270997 1.6983e-09 deg/d
Q 2.378960304035868 9.2691e-09 au
  Orbit Determination Parameters
   # obs. used (total)      992  
   data-arc span      14560 days (39.86 yr)  
   first obs. used      1978-11-05  
   last obs. used      2018-09-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5387  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-03 09:53:59  

Additional Information
 Earth MOID = 1.1235 au 
 Jupiter MOID = 2.73168 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

[ show close-approach data ]
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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