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129856 (1999 RX101)
Classification: Main-belt Asteroid          SPK-ID: 2129856
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2216809930927418 6.0081e-08  
a 2.684337863970772 1.6528e-08 au
q 2.089271180489282 1.6051e-07 au
i 9.453745629539375 4.3691e-06 deg
node 297.8973159890757 3.4616e-05 deg
peri 87.7735870753183 3.6e-05 deg
M 223.5226584465058 9.5119e-06 deg
tp 2459609.492923892540
(2022-Jan-29.99292389)
4.4065e-05 TDB
period 1606.401840084064
4.40
1.4837e-05
4.062e-08
d
yr
n .224103328953583 2.0698e-09 deg/d
Q 3.279404547452262 2.0192e-08 au
  Orbit Determination Parameters
   # obs. used (total)      655  
   data-arc span      7449 days (20.39 yr)  
   first obs. used      1999-09-06  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5428  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 07:06:11  

Additional Information
 Earth MOID = 1.11878 au 
 Jupiter MOID = 2.30827 au 
 T_jup = 3.320 
[ 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 15.1   n/a MPO338152  

129856 (1999 RX101)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17

[ show close-approach data ]
Alternate Designations
 1999 RX101 = 2001 BX27 = 2001 DF40 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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