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165569 (2001 DG91)
Classification: Jupiter Trojan          SPK-ID: 2165569
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06360453015992273 5.631e-08  
a 5.136186377644762 1.6025e-07 au
q 4.809501656280871 3.6058e-07 au
i 5.429995093351535 6.6294e-06 deg
node 136.1521940957013 6.6713e-05 deg
peri 332.8002163018839 9.6732e-05 deg
M 266.3997988258705 7.6045e-05 deg
tp 2460105.936678096666
(2023-Jun-10.43667810)
0.00093207 TDB
period 4251.67039304177
11.64
0.00019898
5.448e-07
d
yr
n .08467260317007909 3.9627e-09 deg/d
Q 5.462871099008654 1.7044e-07 au
  Orbit Determination Parameters
   # obs. used (total)      324  
   data-arc span      10422 days (28.53 yr)  
   first obs. used      1991-03-22  
   last obs. used      2019-10-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52741  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 19:10:00  

Additional Information
 Earth MOID = 3.82732 au 
 Jupiter MOID = .342729 au 
 T_jup = 2.987 
[ 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 13.0   n/a MPO454114  
diameter diameter 11.485 km 1.173 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.077   0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

165569 (2001 DG91)          Discovered 2001-Feb-20 by LINEAR at Socorro
Reference: 20071026/Numbers.arcLast Updated: 2007-10-28

Alternate Designations
 2001 DG91 = 2002 EK143 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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