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85557 (1997 YY16)
Classification: Main-belt Asteroid          SPK-ID: 2085557
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1624460935840957 3.1394e-08  
a 2.291485952134656 7.7444e-09 au
q 1.919243010707549 7.2119e-08 au
i 5.382984838682903 3.7688e-06 deg
node 354.7743640593938 3.8007e-05 deg
peri 46.92916627915473 3.9633e-05 deg
M 172.2037481828826 1.1805e-05 deg
tp 2458394.441809379500
(2018-Oct-02.94180938)
4.0621e-05 TDB
period 1266.993029627142
3.47
6.4229e-06
1.758e-08
d
yr
n .2841373169242636 1.4404e-09 deg/d
Q 2.663728893561763 9.0024e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1185  
   data-arc span      11794 days (32.29 yr)  
   first obs. used      1988-01-12  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49603  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:37:43  

Additional Information
 Earth MOID = .931764 au 
 Jupiter MOID = 2.75535 au 
 T_jup = 3.575 
[ 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 15.1   n/a MPO351442  

85557 (1997 YY16)          Discovered 1997-Dec-30 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

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Alternate Designations
 1997 YY16 = 1988 AG4 = 2002 AN5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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