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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 67 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5775272422631021 4.3499e-08  
a 2.136612271737538 2.8356e-08 AU
q .9026604786554558 9.7307e-08 AU
i 9.544246511962861 6.8724e-06 deg
node 78.85175527040481 5.7426e-05 deg
peri 39.07784503934716 5.7257e-05 deg
M 41.17865624681853 2.964e-05 deg
tp 2456870.016176452139
(2014-Jul-31.51617645)
9.1339e-05 JED
period 1140.740877887662
3.12
2.2709e-05
6.217e-08
d
yr
n .315584377642906 6.2823e-09 deg/d
Q 3.37056406481962 4.4732e-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 = .000830729 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 Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) 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 (704)
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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