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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1303449386991115 7.0611e-08  
a 2.26889321398875 2.1084e-08 AU
q 1.973154467096556 1.5074e-07 AU
i 9.52835810657823 1.2965e-05 deg
node 1.125260423425615 3.4905e-05 deg
peri 108.2042765616736 7.316e-05 deg
M 188.5291556654925 6.5898e-05 deg
tp 2457395.075892902974
(2016-Jan-07.57589290)
0.0002341 JED
period 1248.301553980247
3.42
1.74e-05
4.764e-08
d
yr
n .288391854397785 4.02e-09 deg/d
Q 2.564631960880944 2.3833e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      658  
   data-arc span      5304 days (14.52 yr)  
   first obs. used      1998-11-25  
   last obs. used      2013-06-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55474  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-06 15:47:48  

Additional Information
 Earth MOID = 1.0128 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 (905)
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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