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129281 (2005 RP21)
Classification: Main-belt Asteroid          SPK-ID: 2129281
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09230578332763308 4.2998e-08  
a 3.114873305948449 3.0031e-08 au
q 2.827352485476543 1.3997e-07 au
i 12.43463579660467 5.4636e-06 deg
node 192.398406406808 2.2149e-05 deg
peri 140.9576050516345 3.8991e-05 deg
M 254.5328975338518 3.4539e-05 deg
tp 2459588.765692397523
(2022-Jan-09.26569240)
0.00019686 TDB
period 2007.978263469238
5.50
2.9039e-05
7.95e-08
d
yr
n .1792848092777749 2.5928e-09 deg/d
Q 3.402394126420355 3.2803e-08 au
  Orbit Determination Parameters
   # obs. used (total)      369  
   data-arc span      8040 days (22.01 yr)  
   first obs. used      1998-04-22  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54586  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 21:43:07  

Additional Information
 Earth MOID = 1.83104 au 
 Jupiter MOID = 2.02214 au 
 T_jup = 3.175 
[ 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 15.2   n/a MPO432772  

129281 (2005 RP21)          Discovered 2005-Sep-06 by LONEOS at Anderson Mesa
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

Alternate Designations
 2005 RP21 = 2000 SW330 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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