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332554 (2008 RX21)
Classification: Main-belt Asteroid          SPK-ID: 2332554
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2603570726863034 5.8446e-08  
a 2.630177637331958 2.5559e-08 au
q 1.945392287031232 1.5894e-07 au
i 12.78035259611593 6.5325e-06 deg
node 151.2022495634623 3.2255e-05 deg
peri 155.4072979740459 3.5187e-05 deg
M 288.5622946953592 1.8608e-05 deg
tp 2459309.672632145888
(2021-Apr-05.17263215)
8.3612e-05 TDB
period 1558.030833967583
4.27
2.2711e-05
6.218e-08
d
yr
n .2310608956841032 3.3681e-09 deg/d
Q 3.314962987632684 3.2214e-08 au
  Orbit Determination Parameters
   # obs. used (total)      131  
   data-arc span      7086 days (19.40 yr)  
   first obs. used      2000-11-27  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56817  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 21:30:09  

Additional Information
 Earth MOID = .938523 au 
 Jupiter MOID = 2.02784 au 
 T_jup = 3.317 
[ 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 17.0   n/a MPO434082  

332554 (2008 RX21)          Discovered 2008-Sep-02 by La Sagra at La Sagra
Reference: 20120703/Numbers.arcLast Updated: 2012-07-09

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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