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JPL Small-Body Database Browser
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212971 (2009 BA121)
Classification: Main-belt Asteroid          SPK-ID: 2212971
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1501661209990379 6.9343e-08  
a 2.786170194366146 2.7131e-08 au
q 2.367781823835046 1.8834e-07 au
i .8508012648974971 6.4105e-06 deg
node 225.3217745068555 0.00051069 deg
peri 310.3805941466682 0.00051123 deg
M 131.9771996052692 2.5169e-05 deg
tp 2458377.760665865379
(2018-Sep-16.26066587)
0.00011476 TDB
period 1698.673414491158
4.65
2.4811e-05
6.793e-08
d
yr
n .2119300843404551 3.0955e-09 deg/d
Q 3.204558564897246 3.1205e-08 au
  Orbit Determination Parameters
   # obs. used (total)      146  
   data-arc span      8856 days (24.25 yr)  
   first obs. used      1995-01-31  
   last obs. used      2019-05-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61604  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 11:47:57  

Additional Information
 Earth MOID = 1.37238 au 
 Jupiter MOID = 1.76218 au 
 T_jup = 3.314 
[ 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 16.7   n/a MPO475751  

212971 (2009 BA121)          Discovered 2009-Jan-31 by Spacewatch at Kitt Peak
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

[ show close-approach data ]
Alternate Designations
 2009 BA121 = 1995 BQ14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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