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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1087451042065813 6.0536e-08  
a 5.214441667899917 1.9316e-07 au
q 4.647396665345001 4.3996e-07 au
i 4.960868511900958 5.6345e-06 deg
node 103.9560006865493 8.1413e-05 deg
peri 225.4551176971686 8.99e-05 deg
M 283.2120460737407 4.4513e-05 deg
tp 2460128.185443444937
(2023-Jul-02.68544345)
0.00057272 TDB
period 4349.207689019698
11.91
0.00024166
6.616e-07
d
yr
n .08277369712853222 4.5993e-09 deg/d
Q 5.781486670454832 2.1416e-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54235  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 05:13:48  

Additional Information
 Earth MOID = 3.63671 au 
 Jupiter MOID = .264616 au 
 T_jup = 2.981 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457613.5 (2016-Aug-13.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1076885373838326 6.0403e-08  
q 4.653595974768507 4.3948e-07 au
tp 2455788.957327270210
(2011-Aug-15.45732727)
0.00044322 TDB
node 103.956333666895 8.1392e-05 deg
peri 226.0821076545028 9.0057e-05 deg
i 4.96105373781857 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54235  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 05:13:48  

Additional Information
 Jupiter MOID = .264616 au 
 T_jup = 2.981 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.648565734536172E-15 -2.512515565750554E-14 -7.481600177190096E-13 9.962779095943455E-16 -2.919302848388802E-13 -1.683151603061983E-15
q -2.512515565750554E-14 1.931415385827201E-13 3.199715254898817E-11 1.585422118211577E-14 5.043046618167032E-12 1.689405706188995E-14
tp -7.481600177190096E-13 3.199715254898817E-11 1.964418905574179E-7 7.161961180172944E-11 1.700469716098263E-8 1.099082512132338E-11
node 9.962779095943455E-16 1.585422118211577E-14 7.161961180172944E-11 6.624594324577346E-9 -6.592843471899773E-9 -1.169702007695868E-10
peri -2.919302848388802E-13 5.043046618167032E-12 1.700469716098263E-8 -6.592843471899773E-9 8.110260446763316E-9 1.17750389056795E-10
i -1.683151603061983E-15 1.689405706188995E-14 1.099082512132338E-11 -1.169702007695868E-10 1.17750389056795E-10 3.174980932091689E-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 13.47   n/a E2021B55  
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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