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442568 (2012 BO21)
Classification: Main-belt Asteroid          SPK-ID: 2442568
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 .08570710701274536 1.1304e-07  
a 3.097787550247818 1.1176e-07 au
q 2.832285141175978 4.2288e-07 au
i 9.460050940094725 7.4112e-06 deg
node 300.5518420171568 5.3705e-05 deg
peri 102.234190964034 9.1099e-05 deg
M 270.2703309660123 8.6222e-05 deg
tp 2459496.874470770237
(2021-Oct-09.37447077)
0.0004996 TDB
period 1991.479645484925
5.45
0.00010777
2.951e-07
d
yr
n .1807701127230653 9.7822e-09 deg/d
Q 3.363289959319658 1.2133e-07 au
  Orbit Determination Parameters
   # obs. used (total)      122  
   data-arc span      4897 days (13.41 yr)  
   first obs. used      2006-02-02  
   last obs. used      2019-07-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60616  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:43:47  

Additional Information
 Earth MOID = 1.86096 au 
 Jupiter MOID = 1.98202 au 
 T_jup = 3.196 
[ 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 15.9   n/a MPO477090  

442568 (2012 BO21)          Discovered 2010-Nov-11 by CSS at Catalina
Reference: Last Updated: 2015-09-02

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