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7641 (1986 TT6)
Classification: Jupiter Trojan          SPK-ID: 2007641
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05326375322270779 6.3563e-08  
a 5.214395952271368 1.1818e-07 au
q 4.936657653064099 3.613e-07 au
i 34.69130979856848 6.5882e-06 deg
node 242.0573426246963 1.1604e-05 deg
peri 227.7866894966216 6.9824e-05 deg
M 239.0877951940209 7.4349e-05 deg
tp 2460461.237153545920
(2024-May-30.73715355)
0.00092818 TDB
period 4349.150494115603
11.91
0.00014786
4.048e-07
d
yr
n .08277478567069126 2.8141e-09 deg/d
Q 5.492134251478637 1.2448e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1923  
   data-arc span      16299 days (44.62 yr)  
   first obs. used      1975-11-03  
   last obs. used      2020-06-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38528  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:42:45  

Additional Information
 Earth MOID = 4.00437 au 
 Jupiter MOID = .0241592 au 
 T_jup = 2.642 
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Orbital Elements at Epoch 2457141.5 (2015-Apr-29.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05339784166684037 6.3412e-08  
q 4.936554244438383 3.6123e-07 au
tp 2456134.230703067528
(2012-Jul-25.73070307)
0.0008472 TDB
node 242.0631736656111 1.1599e-05 deg
peri 229.3944747632806 7.0018e-05 deg
i 34.69738840330378 6.5897e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1923  
   data-arc span      16299 days (44.62 yr)  
   first obs. used      1975-11-03  
   last obs. used      2020-06-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .38528  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:42:45  

Additional Information
 Jupiter MOID = .0241592 au 
 T_jup = 2.642 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.021064007837296E-15 -2.177191185045248E-14 -6.41308948279674E-12 -8.649458599139545E-15 -5.088272364858976E-13 4.050828069565503E-15
q -2.177191185045248E-14 1.304857819228463E-13 8.171560310967036E-11 6.354336111546794E-14 6.790934856901128E-12 -3.497741097298392E-15
tp -6.41308948279674E-12 8.171560310967036E-11 7.177477485871783E-7 6.33722758175165E-11 5.861682240792369E-8 6.353668060333357E-11
node -8.649458599139545E-15 6.354336111546794E-14 6.33722758175165E-11 1.345342204772911E-10 -1.045421972378962E-10 1.765573071670353E-11
peri -5.088272364858976E-13 6.790934856901128E-12 5.861682240792369E-8 -1.045421972378962E-10 4.902482080608068E-9 -8.861115361322991E-12
i 4.050828069565503E-15 -3.497741097298392E-15 6.353668060333357E-11 1.765573071670353E-11 -8.861115361322991E-12 4.342360407475177E-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 9.5   n/a MPO452277  
diameter diameter 71.839 km 1.644 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 27.770 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Mottola, S.; Di Martino, M.; Erikson, A.; Gonano-Beurer, M.; et al. (2011) Astron. J. 141, A170.]
geometric albedo albedo 0.065   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

7641 (1986 TT6)          Discovered 1986-Oct-05 by Antal, M. at Piwnice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1986 TT6 = 1975 VT5 = 1975 XS4 = 1986 VP5 = 1991 HY = 1996 RN26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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