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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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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05326373930668644 5.9626e-08  
a 5.214395932886955 1.1403e-07 au
q 4.936657707275818 3.5105e-07 au
i 34.69131077226529 5.8846e-06 deg
node 242.0573434511246 1.1342e-05 deg
peri 227.7866863768011 6.9675e-05 deg
M 239.0877994103472 7.4076e-05 deg
tp 2460461.237094463201
(2024-May-30.73709446)
0.00092382 TDB
period 4349.150469863782
11.91
0.00014267
3.906e-07
d
yr
n .08277478613226169 2.7153e-09 deg/d
Q 5.492134158498091 1.2011e-07 au
  Orbit Determination Parameters
   # obs. used (total)      2021  
   data-arc span      16346 days (44.75 yr)  
   first obs. used      1975-11-03  
   last obs. used      2020-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37865  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:52:21  

Additional Information
 Earth MOID = 4.00437 au 
 Jupiter MOID = .0241591 au 
 T_jup = 2.642 
[ show covariance matrix ]

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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