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JPL Small-Body Database Browser
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74868 (1999 TC93)
Classification: Main-belt Asteroid          SPK-ID: 2074868
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1551811526801631 5.0198e-08  
a 2.275351138103245 1.0083e-08 au
q 1.922259525740262 1.1858e-07 au
i 7.25403914816856 3.7257e-06 deg
node 75.72802342024784 4.021e-05 deg
peri 309.36885696 4.2599e-05 deg
M 355.5568285428083 1.6217e-05 deg
tp 2459015.972540923979
(2020-Jun-15.47254092)
5.6534e-05 TDB
period 1253.63488361829
3.43
8.3327e-06
2.281e-08
d
yr
n .2871649510589191 1.9087e-09 deg/d
Q 2.628442750466227 1.1647e-08 au
  Orbit Determination Parameters
   # obs. used (total)      799  
   data-arc span      6873 days (18.82 yr)  
   first obs. used      1999-09-08  
   last obs. used      2018-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57741  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:23:17  

Additional Information
 Earth MOID = .936474 au 
 Jupiter MOID = 2.82238 au 
 T_jup = 3.583 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456675.5 (2014-Jan-18.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1557929769757388 5.0307e-08  
q 1.921428970530018 1.1885e-07 au
tp 2456508.297715267783
(2013-Aug-03.79771527)
4.7628e-05 TDB
node 75.77799853331091 4.0185e-05 deg
peri 309.38322737407 4.2533e-05 deg
i 7.256570952482895 3.7275e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      799  
   data-arc span      6873 days (18.82 yr)  
   first obs. used      1999-09-08  
   last obs. used      2018-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57741  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:23:17  

Additional Information
 Jupiter MOID = 2.82238 au 
 T_jup = 3.583 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.530815065667432E-15 -5.967264118887622E-15 -1.044908309754062E-12 3.505023179828068E-14 -3.19265362931252E-13 -5.662913334253651E-15
q -5.967264118887622E-15 1.412529114435752E-14 2.524892680318878E-12 -8.214315425329789E-14 7.705232655617262E-13 1.371324268295754E-14
tp -1.044908309754062E-12 2.524892680318878E-12 2.268433997286458E-9 -2.648663500739648E-11 6.929988736639754E-10 5.511230019201723E-12
node 3.505023179828068E-14 -8.214315425329789E-14 -2.648663500739648E-11 1.614812903446303E-9 -1.609230602329727E-9 -2.340364924465788E-11
peri -3.19265362931252E-13 7.705232655617262E-13 6.929988736639754E-10 -1.609230602329727E-9 1.809087909569819E-9 2.481913633985225E-11
i -5.662913334253651E-15 1.371324268295754E-14 5.511230019201723E-12 -2.340364924465788E-11 2.481913633985225E-11 1.389440054301611E-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 15.6   n/a MPO436307  

74868 (1999 TC93)          Discovered 1999-Oct-02 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 TC93 = 2002 LN21 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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