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JPL Small-Body Database Browser
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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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1624460968229188 3.1857e-08  
a 2.291485950178657 8.392e-09 au
q 1.919243001647577 7.3681e-08 au
i 5.38298576114188 4.0538e-06 deg
node 354.7743514525636 4.3746e-05 deg
peri 46.92918529886663 4.6272e-05 deg
M 172.2037437631256 1.3928e-05 deg
tp 2458394.441825710496
(2018-Oct-02.94182571)
4.8943e-05 TDB
period 1266.993028004895
3.47
6.9601e-06
1.906e-08
d
yr
n .2841373172880705 1.5609e-09 deg/d
Q 2.663728898709737 9.7553e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1114  
   data-arc span      11706 days (32.05 yr)  
   first obs. used      1988-01-12  
   last obs. used      2020-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49941  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:34:26  

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

[ show close-approach data ]
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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