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160661 (1999 XD225)
Classification: Jupiter Trojan          SPK-ID: 2160661
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08748296117082335 6.4349e-08  
a 5.287935383038735 1.9262e-07 au
q 4.825331137250535 4.4337e-07 au
i 6.281399552975762 1.0509e-05 deg
node 301.6491454095045 6.5684e-05 deg
peri 117.9452028056686 0.00010263 deg
M 260.6561040619275 8.5117e-05 deg
tp 2459826.149586484555
(2022-Sep-03.64958648)
0.0010938 TDB
period 4441.479237028208
12.16
0.00024268
6.644e-07
d
yr
n .08105407698379243 4.4288e-09 deg/d
Q 5.750539628826936 2.0947e-07 au
  Orbit Determination Parameters
   # obs. used (total)      201  
   data-arc span      8381 days (22.95 yr)  
   first obs. used      1996-09-16  
   last obs. used      2019-08-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55763  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 18:41:58  

Additional Information
 Earth MOID = 3.84351 au 
 Jupiter MOID = .239552 au 
 T_jup = 2.980 
[ 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 13.1   n/a MPO454063  
diameter diameter 13.088 km 0.703 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.049   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

160661 (1999 XD225)          Discovered 1999-Dec-13 by Spacewatch at Kitt Peak
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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