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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1303614775655258 7.0477e-08  
a 2.268739570729588 2.0433e-08 AU
q 1.972983328077902 1.5009e-07 AU
i 9.529029175391893 1.0282e-05 deg
node 1.12119596758194 3.2476e-05 deg
peri 108.2507080612818 6.2319e-05 deg
M 246.1587888652504 5.8211e-05 deg
tp 2457395.204795126075
(2016-Jan-07.70479513)
0.00020598 JED
period 1248.174758762853
3.42
1.6862e-05
4.617e-08
d
yr
n .2884211505421079 3.8964e-09 deg/d
Q 2.564495813381274 2.3097e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      681  
   data-arc span      5786 days (15.84 yr)  
   first obs. used      1998-11-25  
   last obs. used      2014-09-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54112  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 16:51:27  

Additional Information
 Earth MOID = 1.01284 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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