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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1304041606901003 5.5542e-08  
a 2.268470300683247 1.2512e-08 au
q 1.972652335072229 1.2412e-07 au
i 9.529525540037056 8.3005e-06 deg
node 1.121076826024491 3.2432e-05 deg
peri 108.3443888765232 4.59e-05 deg
M 1.457884501475764 3.2838e-05 deg
tp 2457395.446192543843
(2016-Jan-07.94619254)
0.00011382 JED
period 1247.952552053867
3.42
1.0325e-05
2.827e-08
d
yr
n .2884725059518616 2.3866e-09 deg/d
Q 2.564288266294266 1.4143e-08 au
  Orbit Determination Parameters
   # obs. used (total)      711  
   data-arc span      6232 days (17.06 yr)  
   first obs. used      1998-11-25  
   last obs. used      2015-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55093  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 16:26:51  

Additional Information
 Earth MOID = 1.01239 au 
 Jupiter MOID = 2.55528 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 14.8 mag n/a MPO263998  

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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