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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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .053820380868858 3.4924e-08  
a 2.257462788818595 8.4423e-09 au
q 2.135965281727104 7.9379e-08 au
i 3.263952924560737 4.17e-06 deg
node 58.10538586369108 7.3318e-05 deg
peri 253.8459201374187 8.5064e-05 deg
M 80.84457879130426 4.287e-05 deg
tp 2458322.286801482676
(2018-Jul-22.78680148)
0.00014769 TDB
period 1238.880243594138
3.39
6.9496e-06
1.903e-08
d
yr
n .290584987420251 1.6301e-09 deg/d
Q 2.378960295910086 8.8966e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1165  
   data-arc span      15006 days (41.08 yr)  
   first obs. used      1978-11-05  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51572  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 23:39:54  

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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