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31669 (1999 JT6)
Classification: Apollo [NEO, PHA]          SPK-ID: 2031669
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 67 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5773730913600217 4.3491e-08  
a 2.137003191455553 2.8258e-08 au
q .9031550525586279 9.7286e-08 au
i 9.541984750551078 6.8704e-06 deg
node 78.84800795026213 5.7441e-05 deg
peri 39.09941891956177 5.7272e-05 deg
M 167.3738342546608 3.2118e-05 deg
tp 2456869.992842818148
(2014-Jul-31.49284282)
9.1338e-05 JED
period 1141.05396124752
3.12
2.2633e-05
6.197e-08
d
yr
n .3154977873319945 6.2578e-09 deg/d
Q 3.370851330352477 4.4573e-08 au
  Orbit Determination Parameters
   # obs. used (total)      524  
   data-arc span      5209 days (14.26 yr)  
   first obs. used      1996-06-12  
   last obs. used      2010-09-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60038  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 02:54:54  

Additional Information
 Earth MOID = .000613623 au 
 Jupiter MOID = 1.81072 au 
 T_jup = 3.467 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.0 mag n/a PDS3 (MPO 18845)  
rotation period rot_per 5.807 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Published Reference List:
[Gaftonyuk, N.M.; Krugly, Yu.N. (2004) Astronomical School Report 5, No. 1-2, 122-125 (in Russian).]
[Galad, A.; Pravec, P.; Kusnirak, P.; Gajdos, S.; et al. (2005) Earth, Moon, and Planets, 97, 147-163.]

31669 (1999 JT6)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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