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102131 (1999 RX179)
Classification: Main-belt Asteroid          SPK-ID: 2102131
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1288306035462297 4.3578e-08  
a 2.340441118098196 1.1384e-08 au
q 2.038920676289193 1.0145e-07 au
i 6.324444900317379 4.2641e-06 deg
node 112.8211552273508 4.3729e-05 deg
peri 242.7203342972127 4.671e-05 deg
M 333.7213759804291 1.6071e-05 deg
tp 2459295.965208746263
(2021-Mar-22.46520875)
5.8523e-05 TDB
period 1307.811060543334
3.58
9.5417e-06
2.612e-08
d
yr
n .2752691201819604 2.0083e-09 deg/d
Q 2.641961559907199 1.285e-08 au
  Orbit Determination Parameters
   # obs. used (total)      668  
   data-arc span      7581 days (20.76 yr)  
   first obs. used      1999-09-09  
   last obs. used      2020-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56756  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:40:30  

Additional Information
 Earth MOID = 1.04099 au 
 Jupiter MOID = 2.78005 au 
 T_jup = 3.545 
[ 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 16.18   n/a E2021B55  
diameter diameter 1.617 km 0.153 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.295   0.102 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

102131 (1999 RX179)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 RX179 = 2002 LD9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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