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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 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1303449213580255 7.0456e-08  
a 2.268893205022417 2.0408e-08 AU
q 1.973154498644012 1.5008e-07 AU
i 9.52834697532305 1.1792e-05 deg
node 1.125219864817614 3.3707e-05 deg
peri 108.2043364344528 6.8418e-05 deg
M 188.5291368081496 6.2276e-05 deg
tp 2457395.075954766377
(2016-Jan-07.57595477)
0.00022169 JED
period 1248.30154658059
3.42
1.6842e-05
4.611e-08
d
yr
n .2883918561073084 3.891e-09 deg/d
Q 2.564631911400822 2.3068e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      662  
   data-arc span      5695 days (15.59 yr)  
   first obs. used      1998-11-25  
   last obs. used      2014-06-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54196  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 14:31:41  

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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