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305699 (2009 BY157)
Classification: Main-belt Asteroid          SPK-ID: 2305699
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1910335363710226 5.8155e-08  
a 2.359986135167512 1.4214e-08 au
q 1.90914963797988 1.3327e-07 au
i 3.769776499734833 8.3818e-06 deg
node 338.9512087964145 9.9235e-05 deg
peri 140.2337874077996 0.00010308 deg
M 66.18225544926803 2.6255e-05 deg
tp 2458757.054547229051
(2019-Sep-30.55454723)
9.5774e-05 TDB
period 1324.227504829031
3.63
1.1963e-05
3.275e-08
d
yr
n .2718566097496057 2.456e-09 deg/d
Q 2.810822632355144 1.6929e-08 au
  Orbit Determination Parameters
   # obs. used (total)      147  
   data-arc span      9666 days (26.46 yr)  
   first obs. used      1993-11-09  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56899  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 20:00:59  

Additional Information
 Earth MOID = .926908 au 
 Jupiter MOID = 2.27546 au 
 T_jup = 3.524 
[ 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 18.1   n/a MPO264762  

305699 (2009 BY157)          Discovered 2009-Jan-31 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

[ show close-approach data ]
Alternate Designations
 2009 BY157 = 2004 XN142 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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