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JPL Small-Body Database Browser
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74911 (1999 TZ139)
Classification: Main-belt Asteroid          SPK-ID: 2074911
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09619240169066642 3.4244e-08  
a 2.357630334336401 1.0611e-08 au
q 2.130844210177814 8.2219e-08 au
i 6.704310606878494 5.4115e-06 deg
node 24.88971015647421 3.3391e-05 deg
peri 242.8690866505885 4.4461e-05 deg
M 4.359221228353286 3.0528e-05 deg
tp 2458984.489002047954
(2020-May-14.98900205)
0.00011211 TDB
period 1322.245181145348
3.62
8.9267e-06
2.444e-08
d
yr
n .2722641799973609 1.8381e-09 deg/d
Q 2.584416458494988 1.1632e-08 au
  Orbit Determination Parameters
   # obs. used (total)      916  
   data-arc span      7645 days (20.93 yr)  
   first obs. used      1998-05-22  
   last obs. used      2019-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53455  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:24:02  

Additional Information
 Earth MOID = 1.12522 au 
 Jupiter MOID = 2.48327 au 
 T_jup = 3.538 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456531.5 (2013-Aug-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09660431174394482 3.4349e-08  
q 2.129201903686709 8.2493e-08 au
tp 2456339.870028038252
(2013-Feb-16.37002804)
0.00010866 TDB
node 24.96280909236866 3.3409e-05 deg
peri 242.5520846929344 4.4315e-05 deg
i 6.70368754823641 5.4098e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      916  
   data-arc span      7645 days (20.93 yr)  
   first obs. used      1998-05-22  
   last obs. used      2019-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53455  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:24:02  

Additional Information
 Jupiter MOID = 2.48327 au 
 T_jup = 3.538 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.179830033955439E-15 -2.814206221847012E-15 -6.67369758601848E-13 -2.659458879454174E-15 -1.721238281824707E-13 7.272031055558395E-16
q -2.814206221847012E-15 6.805136208766953E-15 1.635489376005091E-12 5.983914848227896E-15 4.243280455938991E-13 -1.467921922049993E-15
tp -6.67369758601848E-13 1.635489376005091E-12 1.180761618798048E-8 -6.082246616003343E-12 3.174857654595568E-9 3.409094291313516E-12
node -2.659458879454174E-15 5.983914848227896E-15 -6.082246616003343E-12 1.116138489809662E-9 -1.109669494226624E-9 -3.543404371904868E-11
peri -1.721238281824707E-13 4.243280455938991E-13 3.174857654595568E-9 -1.109669494226624E-9 1.963786046115305E-9 3.611052720648608E-11
i 7.272031055558395E-16 -1.467921922049993E-15 3.409094291313516E-12 -3.543404371904868E-11 3.611052720648608E-11 2.926540482451701E-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 15.5   n/a MPO436307  

74911 (1999 TZ139)          Discovered 1999-Oct-06 by LINEAR at Socorro
Reference: 20040415/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
1954-Jun-03 06:16 < 00:01 Pallas 0.0413529038129344 0.041342325860132 0.0413634828439821 14.9575047517817 14.9575045972401 2434896.761413983 0.557693860543702 624.154041995096 39.4137134705152 -32.4062198849783 84504.9877322371 T 21 CATAB v2.0f-lin.ifort 2020-Feb-23 17:24:19 2020-Feb-23 17:24
2022-Jul-21 16:04 00:01 Ceres 0.0392638784365757 0.0392631236224794 0.0392646333259479 3.07836609242775 3.0783625971761 2459782.169396857 1.18080504299776 140.173070353433 28.9580492420696 -80.244946682485 197258.663348849 T 21 CATAB v2.0f-lin.ifort 2020-Feb-23 17:24:19 2020-Feb-23 17:24
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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