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21337 (1997 BN9)
Classification: Main-belt Asteroid          SPK-ID: 2021337
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07601326016245007 3.758e-08  
a 2.974353671849265 1.499e-08 au
q 2.748263352375849 1.1537e-07 au
i 9.667393252817517 4.0475e-06 deg
node 201.2864187372317 1.9394e-05 deg
peri 217.5310996836728 3.1758e-05 deg
M 350.0673251827897 2.3157e-05 deg
tp 2459252.195299468985
(2021-Feb-06.69529947)
0.00012043 TDB
period 1873.645130976041
5.13
1.4164e-05
3.878e-08
d
yr
n .1921388389126092 1.4525e-09 deg/d
Q 3.200443991322683 1.6129e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1772  
   data-arc span      8815 days (24.13 yr)  
   first obs. used      1997-01-17  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44873  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:43:38  

Additional Information
 Earth MOID = 1.7654 au 
 Jupiter MOID = 2.1325 au 
 T_jup = 3.236 
[ 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 13.91   n/a E2021B10  

21337 (1997 BN9)          Discovered 1997-Jan-17 by Boattini, A., Di Paola, A. at Campo Imperatore
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

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