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91218 (1999 AM5)
Classification: Main-belt Asteroid          SPK-ID: 2091218
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1306730019283039 5.2389e-08  
a 2.269038272029249 1.0175e-08 au
q 1.972536229532975 1.1896e-07 au
i 9.529540223842524 6.2885e-06 deg
node 1.120301943834515 3.1537e-05 deg
peri 108.3560402963865 4.0912e-05 deg
M 59.11587799775365 2.3544e-05 deg
tp 2457395.495779510579
(2016-Jan-07.99577951)
8.1733e-05 JED
period 1248.421268123531
3.42
8.3974e-06
2.299e-08
d
yr
n .2883641998034098 1.9397e-09 deg/d
Q 2.565540314525522 1.1505e-08 au
  Orbit Determination Parameters
   # obs. used (total)      836  
   data-arc span      6353 days (17.39 yr)  
   first obs. used      1998-11-25  
   last obs. used      2016-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56712  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 15:38:25  

Additional Information
 Earth MOID = 1.01093 au 
 Jupiter MOID = 2.55351 au 
 T_jup = 3.585 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9 mag n/a MPO366274  

91218 (1999 AM5)          Discovered 1999-Jan-10 by Shimizu, Y., Urata, T. at Nachi-Katsuura
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1999 AM5 = 2001 QT74 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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