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245659 (2005 YH257)
Classification: Main-belt Asteroid          SPK-ID: 2245659
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1262368757969933 6.2412e-08  
a 2.407686930969744 1.6903e-08 au
q 2.103748054906872 1.559e-07 au
i 5.340537244683984 6.8814e-06 deg
node 194.2021144211118 5.514e-05 deg
peri 189.1584598820756 5.9004e-05 deg
M 27.86659597785765 2.2437e-05 deg
tp 2458894.871802148328
(2020-Feb-15.37180215)
8.4672e-05 TDB
period 1364.578266280419
3.74
1.437e-05
3.934e-08
d
yr
n .2638177735171552 2.7781e-09 deg/d
Q 2.711625807032615 1.9037e-08 au
  Orbit Determination Parameters
   # obs. used (total)      185  
   data-arc span      7460 days (20.42 yr)  
   first obs. used      1999-03-20  
   last obs. used      2019-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58973  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:16:33  

Additional Information
 Earth MOID = 1.10708 au 
 Jupiter MOID = 2.73641 au 
 T_jup = 3.505 
[ 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 17.0   n/a MPO413143  

245659 (2005 YH257)          Discovered 2005-Dec-30 by Spacewatch at Kitt Peak
Reference: 20100726/Numbers.arcLast Updated: 2010-07-28

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