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129847 (1999 RH40)
Classification: Main-belt Asteroid          SPK-ID: 2129847
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1451754035125462 4.514e-08  
a 2.438299192697635 1.0952e-08 au
q 2.08431812351344 1.1208e-07 au
i 8.02929987625925 4.5536e-06 deg
node 285.3316913337404 3.0608e-05 deg
peri 21.51317895767945 3.3424e-05 deg
M 237.1096397170912 1.3689e-05 deg
tp 2459675.227331256635
(2022-Apr-05.72733126)
5.3938e-05 TDB
period 1390.685476541459
3.81
9.37e-06
2.565e-08
d
yr
n .2588651467730113 1.7441e-09 deg/d
Q 2.792280261881829 1.2542e-08 au
  Orbit Determination Parameters
   # obs. used (total)      543  
   data-arc span      9899 days (27.10 yr)  
   first obs. used      1994-03-16  
   last obs. used      2021-04-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49891  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 09:14:49  

Additional Information
 Earth MOID = 1.06941 au 
 Jupiter MOID = 2.43609 au 
 T_jup = 3.475 
[ 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 15.92   n/a MPCxxxxx  

129847 (1999 RH40)          Discovered 1999-Sep-13 by Kusnirak, P., Pravec, P. at Ondrejov
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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