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117404 (2005 AC9)
Classification: Jupiter Trojan          SPK-ID: 2117404
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0285951367446738 7.7303e-08  
a 5.119533626485929 1.4478e-07 au
q 4.973139862367607 4.3345e-07 au
i 22.81358661172242 5.2719e-06 deg
node 105.0216226962084 1.9316e-05 deg
peri 285.6572720920552 0.00012604 deg
M 203.2978811613809 0.00013089 deg
tp 2460842.189426596390
(2025-Jun-15.68942660)
0.0015883 TDB
period 4231.009755889164
11.58
0.00017948
4.914e-07
d
yr
n .08508607182928712 3.6094e-09 deg/d
Q 5.265927390604249 1.4892e-07 au
  Orbit Determination Parameters
   # obs. used (total)      673  
   data-arc span      6875 days (18.82 yr)  
   first obs. used      2001-08-19  
   last obs. used      2020-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52187  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 01:50:10  

Additional Information
 Earth MOID = 4.04987 au 
 Jupiter MOID = .0310215 au 
 T_jup = 2.844 
[ 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 12.1   n/a MPO351676  
diameter diameter 22.747 km 0.812 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.065   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

117404 (2005 AC9)          Discovered 2005-Jan-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 2005 AC9 = 2003 BU88 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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