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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .229360204669726 5.211e-08  
a 2.365718580933128 1.4727e-08 au
q 1.823116883019332 1.2411e-07 au
i 5.638132875492356 8.4391e-06 deg
node 317.5797417605343 5.6044e-05 deg
peri 256.1125513605635 5.9152e-05 deg
M 352.8791055362933 2.2784e-05 deg
tp 2459026.789062372703
(2020-Jun-26.28906237)
8.4233e-05 TDB
period 1329.055289670287
3.64
1.241e-05
3.398e-08
d
yr
n .2708690923530421 2.5292e-09 deg/d
Q 2.908320278846925 1.8104e-08 au
  Orbit Determination Parameters
   # obs. used (total)      220  
   data-arc span      8011 days (21.93 yr)  
   first obs. used      1998-01-31  
   last obs. used      2020-01-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61831  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-30 00:57:43  

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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