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213064 (1999 RX121)
Classification: Main-belt Asteroid          SPK-ID: 2213064
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2593958467881457 2.848e-08  
a 2.280751204962552 7.518e-09 au
q 1.689133814838207 6.3333e-08 au
i 6.768066048271589 4.9685e-06 deg
node 187.1885800083359 3.8688e-05 deg
peri 141.2953818783978 4.1195e-05 deg
M 66.65103308180043 1.4875e-05 deg
tp 2458967.573081690885
(2020-Apr-28.07308169)
5.1232e-05 TDB
period 1258.100388157048
3.44
6.2206e-06
1.703e-08
d
yr
n .2861456870920712 1.4148e-09 deg/d
Q 2.872368595086897 9.4682e-09 au
  Orbit Determination Parameters
   # obs. used (total)      528  
   data-arc span      7847 days (21.48 yr)  
   first obs. used      1999-07-23  
   last obs. used      2021-01-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50443  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:41:11  

Additional Information
 Earth MOID = .683034 au 
 Jupiter MOID = 2.52009 au 
 T_jup = 3.551 
[ 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 17.03   n/a MPCxxxxx  

213064 (1999 RX121)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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