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JPL Small-Body Database Browser
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85068 (1021 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2085068
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1626829860551856 5.5569e-08  
a 2.361126359450292 1.1096e-08 au
q 1.977011272841309 1.3127e-07 au
i 2.590153009704847 6.2056e-06 deg
node 187.1879109160919 8.3651e-05 deg
peri 167.7516901505459 8.46e-05 deg
M 205.5821350461385 1.5015e-05 deg
tp 2459168.923879056490
(2020-Nov-15.42387906)
5.7521e-05 TDB
period 1325.187318976845
3.63
9.3415e-06
2.558e-08
d
yr
n .271659707910539 1.915e-09 deg/d
Q 2.745241446059274 1.2901e-08 au
  Orbit Determination Parameters
   # obs. used (total)      589  
   data-arc span      16670 days (45.64 yr)  
   first obs. used      1973-09-19  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56947  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:55:07  

Additional Information
 Earth MOID = .971464 au 
 Jupiter MOID = 2.68978 au 
 T_jup = 3.532 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456531.5 (2013-Aug-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1611082896835402 5.5309e-08  
q 1.981180122107098 1.3042e-07 au
tp 2456516.855884397641
(2013-Aug-12.35588440)
4.9748e-05 TDB
node 187.2913396727601 8.3844e-05 deg
peri 167.466976375655 8.4817e-05 deg
i 2.585898442892216 6.1992e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      589  
   data-arc span      16670 days (45.64 yr)  
   first obs. used      1973-09-19  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56947  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:55:07  

Additional Information
 Jupiter MOID = 2.68978 au 
 T_jup = 3.532 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.059133489019338E-15 -7.195065799719325E-15 8.813145644075541E-13 3.444483683873048E-15 1.948236617560265E-13 1.54762052574758E-15
q -7.195065799719325E-15 1.701051589151262E-14 -1.934448755084814E-12 -8.668541091305136E-15 -4.24832754106021E-13 -3.519677129565788E-15
tp 8.813145644075541E-13 -1.934448755084814E-12 2.474862171898251E-9 -4.319286601270144E-12 6.446708310021695E-10 5.836975635853558E-13
node 3.444483683873048E-15 -8.668541091305136E-15 -4.319286601270144E-12 7.029777944999114E-9 -7.023353749797638E-9 1.212431212992247E-11
peri 1.948236617560265E-13 -4.24832754106021E-13 6.446708310021695E-10 -7.023353749797638E-9 7.193856606554893E-9 -1.199591074069649E-11
i 1.54762052574758E-15 -3.519677129565788E-15 5.836975635853558E-13 1.212431212992247E-11 -1.199591074069649E-11 3.842958212108993E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.1   n/a MPO333523  

85068 (1021 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

Alternate Designations
 1021 T-2 = 1994 JJ2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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