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190442 (1999 XE225)
Classification: Jupiter Trojan          SPK-ID: 2190442
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1472946185409542 6.0813e-08  
a 5.219130229039332 1.2677e-07 au
q 4.45038043283742 3.6636e-07 au
i .8458296964735206 8.2937e-06 deg
node 354.0461131330961 0.00036169 deg
peri 115.5047106004727 0.00036293 deg
M 281.0596407176014 3.3505e-05 deg
tp 2460155.475489764232
(2023-Jul-29.97548976)		 0.00042992 TDB
period 4355.074887425538
11.92		 0.00015867
4.344e-07		 d
yr
n .08266218361466814 3.0117e-09 deg/d
Q 5.987880025241244 1.4544e-07 au
   Orbit Determination Parameters
   # obs. used (total)      428  
   data-arc span      8800 days (24.09 yr)  
   first obs. used      1996-09-12  
   last obs. used      2020-10-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52927  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 07:01:47  

Additional Information
 Earth MOID = 3.46708 au 
 Jupiter MOID = .149747 au 
 T_jup = 2.978 
[ 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 MPO260301  
diameter diameter 10.312 km 1.214 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.105   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

190442 (1999 XE225)          Discovered 1999-Dec-13 by Spacewatch at Kitt Peak
Reference: 20080917/Numbers.arcLast Updated: 2008-09-19
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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