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162352 (1999 XS226)
Classification: Jupiter Trojan          SPK-ID: 2162352
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 .07486651179246204 4.5068e-08  
a 5.218277599754937 1.0658e-07 au
q 4.827603358296543 2.9563e-07 au
i 2.284179938017952 4.9271e-06 deg
node 64.28325328157099 0.00014968 deg
peri 35.82852906589882 0.00015687 deg
M 274.204088696292 4.9553e-05 deg
tp 2460038.155723430599
(2023-Apr-03.65572343)
0.00061709 TDB
period 4354.007723196374
11.92
0.00013339
3.652e-07
d
yr
n .08268244405770507 2.533e-09 deg/d
Q 5.60895184121333 1.1455e-07 au
  Orbit Determination Parameters
   # obs. used (total)      529  
   data-arc span      8405 days (23.01 yr)  
   first obs. used      1997-11-01  
   last obs. used      2020-11-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .536  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 05:02:51  

Additional Information
 Earth MOID = 3.84482 au 
 Jupiter MOID = .0226046 au 
 T_jup = 2.993 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457117.5 (2015-Apr-05.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07602766504578212 4.4884e-08  
q 4.810904587254053 2.9292e-07 au
tp 2455702.355564494607
(2011-May-20.85556449)
0.00054308 TDB
node 64.29090855263397 0.00014958 deg
peri 36.56382172972128 0.00015662 deg
i 2.286566000712263 4.9318e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      529  
   data-arc span      8405 days (23.01 yr)  
   first obs. used      1997-11-01  
   last obs. used      2020-11-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .536  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 05:02:51  

Additional Information
 Jupiter MOID = .0226046 au 
 T_jup = 2.993 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.014614473882305E-15 -1.2561645717374E-14 -2.495053513318862E-12 -1.328231996374608E-15 -2.774726200843077E-13 -4.110330157485714E-16
q -1.2561645717374E-14 8.580334757571004E-14 3.426495722955413E-11 1.592931031962641E-14 3.550762078181299E-12 3.508789895814729E-15
tp -2.495053513318862E-12 3.426495722955413E-11 2.949323619915971E-7 1.133111452954386E-10 2.5278947386196E-8 3.216158193464526E-12
node -1.328231996374608E-15 1.592931031962641E-14 1.133111452954386E-10 2.237481500765076E-8 -2.234689016893325E-8 -1.921162300100894E-10
peri -2.774726200843077E-13 3.550762078181299E-12 2.5278947386196E-8 -2.234689016893325E-8 2.452877094098808E-8 1.922799947787437E-10
i -4.110330157485714E-16 3.508789895814729E-15 3.216158193464526E-12 -1.921162300100894E-10 1.922799947787437E-10 2.432313091220617E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.6   n/a MPO454080  
diameter diameter 11.561 km 0.811 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.121   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

162352 (1999 XS226)          Discovered 1999-Dec-14 by Spacewatch at Kitt Peak
Reference: 20070926/Numbers.arcLast Updated: 2007-09-30

Alternate Designations
 1999 XS226 = 2001 DC33 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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