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295256 (2008 GW49)
Classification: Jupiter Trojan          SPK-ID: 2295256
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .108479790785824 6.0562e-08  
a 5.214822516535848 1.9395e-07 au
q 4.649119660956835 4.4052e-07 au
i 4.960794281755939 5.6343e-06 deg
node 103.9569952316271 8.141e-05 deg
peri 225.4046846143878 8.9911e-05 deg
M 266.6776354973272 4.3939e-05 deg
tp 2460128.063367888714
(2023-Jul-02.56336789)
0.00057321 TDB
period 4349.684179169197
11.91
0.00024266
6.644e-07
d
yr
n .08276462960783537 4.6174e-09 deg/d
Q 5.780525372114861 2.1499e-07 au
  Orbit Determination Parameters
   # obs. used (total)      257  
   data-arc span      6818 days (18.67 yr)  
   first obs. used      2001-10-24  
   last obs. used      2020-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54235  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:50:03  

Additional Information
 Earth MOID = 3.64035 au 
 Jupiter MOID = .264717 au 
 T_jup = 2.981 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457613.5 (2016-Aug-13.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1076885375965157 6.0403e-08  
q 4.653595972780072 4.3948e-07 au
tp 2455788.957327080625
(2011-Aug-15.45732708)
0.00044322 TDB
node 103.9563337311097 8.1392e-05 deg
peri 226.0821075335732 9.0057e-05 deg
i 4.961053740294498 5.6347e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      257  
   data-arc span      6818 days (18.67 yr)  
   first obs. used      2001-10-24  
   last obs. used      2020-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54235  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:50:03  

Additional Information
 Jupiter MOID = .264717 au 
 T_jup = 2.981 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.648565581923013E-15 -2.512515456629325E-14 -7.481597249549084E-13 9.962781599933245E-16 -2.919302548091977E-13 -1.683151744870065E-15
q -2.512515456629325E-14 1.931415317902548E-13 3.199715057473044E-11 1.585421742077906E-14 5.043046479687415E-12 1.6894058724377E-14
tp -7.481597249549084E-13 3.199715057473044E-11 1.96441888243531E-7 7.161960866468385E-11 1.700469698059064E-8 1.099082584051724E-11
node 9.962781599933245E-16 1.585421742077906E-14 7.161960866468385E-11 6.624594343835168E-9 -6.592843491387321E-9 -1.169702011077751E-10
peri -2.919302548091977E-13 5.043046479687415E-12 1.700469698059064E-8 -6.592843491387321E-9 8.110260455855477E-9 1.177503894977868E-10
i -1.683151744870065E-15 1.6894058724377E-14 1.099082584051724E-11 -1.169702011077751E-10 1.177503894977868E-10 3.174980909902577E-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 13.4   n/a MPO437320  
diameter diameter 10.496 km 1.319 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.077   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

295256 (2008 GW49)          Discovered 2008-Apr-05 by Spacewatch at Kitt Peak
Reference: 20110912/Numbers.arcLast Updated: 2011-09-14
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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