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48767 Skamander (1997 JG15)
Classification: Jupiter Trojan          SPK-ID: 2048767
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06745423183443981 4.8072e-08  
a 5.216555537772845 1.3807e-07 au
q 4.864676791150685 3.0645e-07 au
i 29.05446042233827 6.6345e-06 deg
node 227.9967095471161 1.0092e-05 deg
peri 101.9093604470774 6.4762e-05 deg
M 242.0047723616435 6.9463e-05 deg
tp 2460426.882893413311
(2024-Apr-26.38289341)
0.00087747 TDB
period 4351.852629180995
11.91
0.00017278
4.73e-07
d
yr
n .08272338947924136 3.2843e-09 deg/d
Q 5.568434284395004 1.4739e-07 au
  Orbit Determination Parameters
   # obs. used (total)      662  
   data-arc span      8440 days (23.11 yr)  
   first obs. used      1997-05-03  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5514  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:35:52  

Additional Information
 Earth MOID = 3.98807 au 
 Jupiter MOID = .131575 au 
 T_jup = 2.744 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457210.5 (2015-Jul-07.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06564490377855738 4.8108e-08  
q 4.885627471526 3.0591e-07 au
tp 2456083.919724482186
(2012-Jun-05.41972448)
0.00079313 TDB
node 227.9894598916255 1.0086e-05 deg
peri 103.0861372268995 6.6463e-05 deg
i 29.041932885139 6.6318e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      662  
   data-arc span      8440 days (23.11 yr)  
   first obs. used      1997-05-03  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5514  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:35:52  

Additional Information
 Jupiter MOID = .131575 au 
 T_jup = 2.744 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.3143824725609E-15 -1.337693160595633E-14 3.668060080263259E-12 -1.155353110633443E-16 2.012441628957299E-13 -7.177905873082829E-17
q -1.337693160595633E-14 9.357854366050183E-14 3.836556180312335E-11 1.319737853683807E-14 4.061721255076155E-12 1.336231208189521E-14
tp 3.668060080263259E-12 3.836556180312335E-11 6.290624204576245E-7 8.727201466153444E-11 5.208350210725887E-8 2.404431672486814E-11
node -1.155353110633443E-16 1.319737853683807E-14 8.727201466153444E-11 1.01736644298851E-10 -8.139127777768383E-11 1.120749382755546E-12
peri 2.012441628957299E-13 4.061721255076155E-12 5.208350210725887E-8 -8.139127777768383E-11 4.417319100588333E-9 1.351490061925324E-12
i -7.177905873082829E-17 1.336231208189521E-14 2.404431672486814E-11 1.120749382755546E-12 1.351490061925324E-12 4.398052037085445E-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 11.9   n/a MPO432045  
diameter diameter 21.815 km 0.607 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  
geometric albedo albedo 0.078   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2011ApJ...742...40G)  

48767 Skamander           Discovered 1997 May 3 by E. W. Elst at the European Southern Observatory.
Skamander (Skamandros), a son of Zeus, fought on the side of the Trojans in the Trojan War and tried to kill Achilles three times.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120703/MPCPages.arcLast Updated: 2012-07-09

Alternate Designations
 1997 JG15 = 2001 XB15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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