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85860 (1999 AY28)
Classification: Main-belt Asteroid          SPK-ID: 2085860
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08577604032274243 3.9787e-08  
a 2.583556076921688 1.2964e-08 au
q 2.361948866691587 1.0658e-07 au
i .7254397176983678 3.4809e-06 deg
node 279.6484743003271 0.00038498 deg
peri 300.3613950415365 0.00038578 deg
M 329.86861964706 2.5461e-05 deg
tp 2459127.452656358816
(2020-Oct-04.95265636)
0.00010739 TDB
period 1516.789332378334
4.15
1.1416e-05
3.126e-08
d
yr
n .2373434413831999 1.7864e-09 deg/d
Q 2.805163287151788 1.4075e-08 au
  Orbit Determination Parameters
   # obs. used (total)      572  
   data-arc span      10627 days (29.10 yr)  
   first obs. used      1991-03-15  
   last obs. used      2020-04-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54367  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:40:34  

Additional Information
 Earth MOID = 1.35387 au 
 Jupiter MOID = 2.16676 au 
 T_jup = 3.418 
[ 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 16.1   n/a MPO432401  

85860 (1999 AY28)          Discovered 1999-Jan-13 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1999 AY28 = 1997 TD23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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