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74814 (1999 TD8)
Classification: Main-belt Asteroid          SPK-ID: 2074814
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .204780628116644 4.0055e-08  
a 2.329483379521677 8.1267e-09 au
q 1.852450309875945 9.5881e-08 au
i .8439353113786188 4.1104e-06 deg
node 37.44731192455692 0.00028296 deg
peri 358.257800826633 0.00028325 deg
M 281.4460225054787 1.5431e-05 deg
tp 2459283.869778254042
(2021-Mar-10.36977825)
5.6781e-05 TDB
period 1298.637235505611
3.56
6.7957e-06
1.861e-08
d
yr
n .2772136745792891 1.4506e-09 deg/d
Q 2.806516449167408 9.7909e-09 au
  Orbit Determination Parameters
   # obs. used (total)      872  
   data-arc span      14183 days (38.83 yr)  
   first obs. used      1981-09-29  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53561  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:14:16  

Additional Information
 Earth MOID = .859323 au 
 Jupiter MOID = 2.62101 au 
 T_jup = 3.543 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456756.5 (2014-Apr-09.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2050914469656915 3.989e-08  
q 1.850753869338677 9.5294e-08 au
tp 2456689.158284002053
(2014-Jan-31.65828400)
4.7369e-05 TDB
node 37.50963356230042 0.00028224 deg
peri 358.456030167966 0.00028253 deg
i .8455192525153442 4.1132e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      872  
   data-arc span      14183 days (38.83 yr)  
   first obs. used      1981-09-29  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53561  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:14:16  

Additional Information
 Jupiter MOID = 2.62101 au 
 T_jup = 3.543 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.591229529455235E-15 -3.794194799820336E-15 -1.047009802480017E-12 6.456744218747674E-15 -2.7734973294258E-13 -5.521046235189696E-16
q -3.794194799820336E-15 9.080997437282524E-15 2.615418770159668E-12 -1.594145150217324E-14 6.937079744057388E-13 1.358117774790952E-15
tp -1.047009802480017E-12 2.615418770159668E-12 2.243797679851329E-9 -2.842117071282349E-12 6.23998056503512E-10 7.770532982380911E-13
node 6.456744218747674E-15 -1.594145150217324E-14 -2.842117071282349E-12 7.966186683554127E-8 -7.965366165568844E-8 -4.069786053141214E-10
peri -2.7734973294258E-13 6.937079744057388E-13 6.23998056503512E-10 -7.965366165568844E-8 7.982585564748691E-8 4.071506904117535E-10
i -5.521046235189696E-16 1.358117774790952E-15 7.770532982380911E-13 -4.069786053141214E-10 4.071506904117535E-10 1.691866488821575E-11

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 15.9   n/a MPO267935  

74814 (1999 TD8)          Discovered 1999-Oct-05 by Juels, C. W. at Fountain Hills
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

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