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233996 (1996 RS21)
Classification: Main-belt Asteroid          SPK-ID: 2233996
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1650854453821665 3.994e-08  
a 2.418689366378218 1.2907e-08 au
q 2.01939895508856 9.5667e-08 au
i 1.034982256259905 4.4863e-06 deg
node 89.0791146508214 0.00029197 deg
peri 236.177586638579 0.00029247 deg
M 124.4648602845134 1.8368e-05 deg
tp 2458525.478983213591
(2019-Feb-10.97898321)
6.8301e-05 TDB
period 1373.942538096313
3.76
1.0998e-05
3.011e-08
d
yr
n .2620196915213088 2.0974e-09 deg/d
Q 2.817979777667876 1.5038e-08 au
  Orbit Determination Parameters
   # obs. used (total)      314  
   data-arc span      8543 days (23.39 yr)  
   first obs. used      1996-09-07  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57311  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 07:26:34  

Additional Information
 Earth MOID = 1.00766 au 
 Jupiter MOID = 2.50082 au 
 T_jup = 3.496 
[ 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 MPO450070  

233996 (1996 RS21)          Discovered 1996-Sep-07 by Spacewatch at Kitt Peak
Reference: 20100330/Numbers.arcLast Updated: 2010-04-05

[ show close-approach data ]
Alternate Designations
 1996 RS21 = 1998 BL21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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