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

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1306053284261658 3.1112e-08  
a 2.268278248833908 7.4119e-09 au
q 1.972029023183027 7.0061e-08 au
i 9.527736942033922 4.382e-06 deg
node 1.104777157527089 2.1291e-05 deg
peri 108.0219091209631 2.8105e-05 deg
M 103.3354989379965 1.8142e-05 deg
tp 2458642.329379599555
(2019-Jun-07.82937960)
6.2312e-05 TDB
period 1247.794075311214
3.42
6.116e-06
1.674e-08
d
yr
n .2885091435541654 1.4141e-09 deg/d
Q 2.564527474484789 8.3799e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1392  
   data-arc span      7874 days (21.56 yr)  
   first obs. used      1998-11-25  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48117  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 00:38:34  

Additional Information
 Earth MOID = 1.01199 au 
 Jupiter MOID = 2.54983 au 
 T_jup = 3.585 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9   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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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