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97228 (1999 XW56)
Classification: Main-belt Asteroid          SPK-ID: 2097228
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08471225334255419 4.493e-08  
a 3.083192391832659 2.5089e-08 au
q 2.822008216831895 1.4165e-07 au
i 12.29240948965798 4.7754e-06 deg
node 74.62624884311504 2.4146e-05 deg
peri 339.9889813221317 4.0304e-05 deg
M 292.2311442369036 3.1162e-05 deg
tp 2459372.743409555316
(2021-Jun-07.24340956)
0.00017157 TDB
period 1977.422016809198
5.41
2.4136e-05
6.608e-08
d
yr
n .1820552198467489 2.2221e-09 deg/d
Q 3.344376566833422 2.7214e-08 au
  Orbit Determination Parameters
   # obs. used (total)      707  
   data-arc span      7574 days (20.74 yr)  
   first obs. used      1999-11-04  
   last obs. used      2020-07-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55626  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:47:39  

Additional Information
 Earth MOID = 1.83764 au 
 Jupiter MOID = 1.97832 au 
 T_jup = 3.186 
[ 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 14.4   n/a MPO359432  

97228 (1999 XW56)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20050224/Numbers.arcLast Updated: 2005-02-28

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