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101929 (1999 RP20)
Classification: Outer Main-belt Asteroid          SPK-ID: 2101929
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1588816475521816 5.2632e-08  
a 3.201048663640534 2.6577e-08 au
q 2.692460778066617 1.6917e-07 au
i 16.68018181131198 6.2741e-06 deg
node 346.5528231772273 1.8423e-05 deg
peri 62.84908636352923 2.7123e-05 deg
M 185.2756147244207 2.0679e-05 deg
tp 2460015.784747936998
(2023-Mar-12.28474794)
0.00012702 TDB
period 2091.880355915062
5.73
2.6052e-05
7.133e-08
d
yr
n .1720939722876853 2.1433e-09 deg/d
Q 3.709636549214451 3.08e-08 au
  Orbit Determination Parameters
   # obs. used (total)      490  
   data-arc span      8867 days (24.28 yr)  
   first obs. used      1996-02-15  
   last obs. used      2020-05-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55372  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:57:42  

Additional Information
 Earth MOID = 1.74684 au 
 Jupiter MOID = 1.977 au 
 T_jup = 3.109 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457108.5 (2015-Mar-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1598478591783548 5.2482e-08  
q 2.689825686821897 1.6872e-07 au
tp 2457926.152493919928
(2017-Jun-21.65249392)
0.00011349 TDB
node 346.5732210808542 1.8427e-05 deg
peri 63.28092713092321 2.7044e-05 deg
i 16.67969948869925 6.2736e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      490  
   data-arc span      8867 days (24.28 yr)  
   first obs. used      1996-02-15  
   last obs. used      2020-05-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55372  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:57:42  

Additional Information
 Jupiter MOID = 1.977 au 
 T_jup = 3.109 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.754381135890811E-15 -8.776232761091742E-15 -7.756688131676913E-13 -1.078966468118985E-14 -2.292778939627293E-13 -6.690941662931934E-15
q -8.776232761091742E-15 2.84659176093828E-14 3.498463912803814E-12 3.471791721207415E-14 8.665378209349659E-13 2.19474012310109E-14
tp -7.756688131676913E-13 3.498463912803814E-12 1.288014236599859E-8 -3.620574192520886E-13 2.259697321829212E-9 -1.160930168580671E-11
node -1.078966468118985E-14 3.471791721207415E-14 -3.620574192520886E-13 3.395365868068857E-10 -3.245739448359796E-10 4.432027775958335E-12
peri -2.292778939627293E-13 8.665378209349659E-13 2.259697321829212E-9 -3.245739448359796E-10 7.313665567072209E-10 -6.150459275917594E-12
i -6.690941662931934E-15 2.19474012310109E-14 -1.160930168580671E-11 4.432027775958335E-12 -6.150459275917594E-12 3.935764023661441E-11

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 14.5   n/a MPO264062  

101929 (1999 RP20)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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