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6545 (1986 TR6)
Classification: Jupiter Trojan          SPK-ID: 2006545
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0510812574324724 4.5813e-08  
a 5.152113510128818 8.3905e-08 au
q 4.888937073596609 2.8113e-07 au
i 11.98614786036014 4.6442e-06 deg
node 278.00657677 2.8429e-05 deg
peri 147.992384696253 7.1997e-05 deg
M 309.2779992333279 6.8709e-05 deg
tp 2459602.325293731280
(2022-Jan-22.82529373)
0.00081935 TDB
period 4271.462136123377
11.69
0.00010435
2.857e-07
d
yr
n .08428027418422181 2.0588e-09 deg/d
Q 5.415289946661027 8.8191e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1625  
   data-arc span      12164 days (33.30 yr)  
   first obs. used      1986-10-05  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44277  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:05:50  

Additional Information
 Earth MOID = 3.90995 au 
 Jupiter MOID = .153344 au 
 T_jup = 2.954 
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Orbital Elements at Epoch 2456831.5 (2014-Jun-23.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05189064425327447 4.545e-08  
q 4.872274463230291 2.7848e-07 au
tp 2455359.389322218547
(2010-Jun-11.88932222)
0.00078489 TDB
node 278.01475062752 2.8442e-05 deg
peri 149.4189319968462 7.1393e-05 deg
i 11.99088425744783 4.6458e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1625  
   data-arc span      12164 days (33.30 yr)  
   first obs. used      1986-10-05  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44277  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:05:50  

Additional Information
 Jupiter MOID = .153344 au 
 T_jup = 2.954 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.065745430093792E-15 -1.223429245531217E-14 -9.476511994677082E-12 9.239758956834892E-15 -8.162486006448338E-13 6.253190207701851E-16
q -1.223429245531217E-14 7.755055749725408E-14 5.927383938545256E-11 -5.028158084152676E-14 5.281162187362877E-12 -1.267350727906642E-15
tp -9.476511994677082E-12 5.927383938545256E-11 6.160500192271558E-7 -2.336319136726562E-10 5.148765315317813E-8 9.725832148821616E-12
node 9.239758956834892E-15 -5.028158084152676E-14 -2.336319136726562E-10 8.089559274778829E-10 -8.104130848780964E-10 2.627288899486138E-11
peri -8.162486006448338E-13 5.281162187362877E-12 5.148765315317813E-8 -8.104130848780964E-10 5.096927537335872E-9 -2.482679761037985E-11
i 6.253190207701851E-16 -1.267350727906642E-15 9.725832148821616E-12 2.627288899486138E-11 -2.482679761037985E-11 2.15834145917767E-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 10.2   n/a MPO502216  
diameter diameter 50.951 km 0.569 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 16.26 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[French, L.M.; Stephens, R.D.; Coley, D.R.; Wasserman, L.H.; et al. (2013) Minor Planet Bull. 40, 198-203.]
geometric albedo albedo 0.068   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

6545 (1986 TR6)          Discovered 1986-Oct-05 by Antal, M. at Piwnice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1986 TR6 = 1989 EY4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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