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13894 (2039 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2013894
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05305601900587126 4.23e-08  
a 2.359102587919367 8.3005e-09 au
q 2.233937996177917 9.7872e-08 au
i 6.590003247543775 4.4768e-06 deg
node 359.6357760780862 2.8495e-05 deg
peri 189.3231687563094 4.2799e-05 deg
M 133.4058586829037 3.1578e-05 deg
tp 2458510.054144134627
(2019-Jan-26.55414413)
0.00011598 TDB
period 1323.483914834702
3.62
6.985e-06
1.912e-08
d
yr
n .2720093504460631 1.4356e-09 deg/d
Q 2.484267179660817 8.7409e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2093  
   data-arc span      17169 days (47.01 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46878  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 16:35:12  

Additional Information
 Earth MOID = 1.2348 au 
 Jupiter MOID = 2.47513 au 
 T_jup = 3.542 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1   n/a MPO473955  
rotation period rot_per 5.478 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

13894 (2039 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20000222/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2039 T-2 = 1998 QY18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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