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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .053056019396186 4.2311e-08  
a 2.359102589320706 9.2431e-09 au
q 2.233937996584114 9.803e-08 au
i 6.590004396560698 4.5289e-06 deg
node 359.6357983141191 3.1886e-05 deg
peri 189.3231366550847 5.0384e-05 deg
M 133.4058676351787 3.7095e-05 deg
tp 2458510.054110785985
(2019-Jan-26.55411079)
0.00013695 TDB
period 1323.483916013953
3.62
7.7782e-06
2.13e-08
d
yr
n .2720093502036973 1.5986e-09 deg/d
Q 2.484267182057298 9.7335e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1930  
   data-arc span      16749 days (45.86 yr)  
   first obs. used      1973-09-19  
   last obs. used      2019-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48075  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 23:16:57  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1901-Jan-18 10:08 00:06 Amphi 0.0206343546145596 0.0206284808754815 0.0206402331656503 1.8238770213615 1.8238768686096 2415402.922422622 6.1481327818095 580.978539824478 45.6733955984782 60.0714969631879 58488.1034119963 T 27 CATAB v2.0f-lin.ifort 2020-Jan-28 23:17:29 2020-Jan-28 23:17
1967-May-05 00:43 00:03 Amphi 0.0192523313285849 0.0192512322559743 0.0192534305278218 1.74168904392214 1.7416888724794 2439615.530137151 2.99665738646771 229.508598995048 51.2373212462728 -85.0877642112934 55863.8356942055 T 27 CATAB v2.0f-lin.ifort 2020-Jan-28 23:17:29 2020-Jan-28 23:17

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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