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11415 (1999 JG81)
Classification: Main-belt Asteroid          SPK-ID: 2011415
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .200707190375245 3.4389e-08  
a 2.258175599685418 6.8568e-09 au
q 1.804943519698624 8.0052e-08 au
i 6.500432677457011 3.5344e-06 deg
node 154.5853960566837 3.0311e-05 deg
peri 163.9273218409573 3.1562e-05 deg
M 37.1654053725999 9.1057e-06 deg
tp 2458872.540844308891
(2020-Jan-24.04084431)
3.1141e-05 TDB
period 1239.467068554043
3.39
5.6453e-06
1.546e-08
d
yr
n .2904474101276241 1.3229e-09 deg/d
Q 2.711407679672212 8.233e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1925  
   data-arc span      17642 days (48.30 yr)  
   first obs. used      1972-07-13  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47434  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:59:42  

Additional Information
 Earth MOID = .793064 au 
 Jupiter MOID = 2.60435 au 
 T_jup = 3.587 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.2   n/a MPO435807  

11415 (1999 JG81)          Discovered 1999-May-14 by LINEAR at Socorro
Reference: 19990831/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 JG81 = 1972 NV = 1972 RT2 = 1989 RZ4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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