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212957 (2009 BY57)
Classification: Main-belt Asteroid          SPK-ID: 2212957
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .229360204082918 5.1879e-08  
a 2.365718586997755 1.0965e-08 au
q 1.823116889081197 1.2368e-07 au
i 5.638128503832299 6.8758e-06 deg
node 317.5797761120431 4.5864e-05 deg
peri 256.112525524944 4.8534e-05 deg
M 352.8790936562032 1.4149e-05 deg
tp 2459026.789106332951
(2020-Jun-26.28910633)
5.2218e-05 TDB
period 1329.055294780927
3.64
9.2403e-06
2.53e-08
d
yr
n .2708690913114644 1.8832e-09 deg/d
Q 2.908320284914312 1.348e-08 au
  Orbit Determination Parameters
   # obs. used (total)      331  
   data-arc span      8148 days (22.31 yr)  
   first obs. used      1998-01-31  
   last obs. used      2020-05-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55979  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 03:57:41  

Additional Information
 Earth MOID = .827222 au 
 Jupiter MOID = 2.10369 au 
 T_jup = 3.506 
[ 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 16.8   n/a MPO418140  

212957 (2009 BY57)          Discovered 2009-Jan-20 by Spacewatch at Kitt Peak
Reference: 20090409/Numbers.arcLast Updated: 2009-04-10

Alternate Designations
 2009 BY57 = 2004 XV170 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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