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JPL Small-Body Database Browser
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117989 (4371 T-1)
Classification: Main-belt Asteroid          SPK-ID: 2117989
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 .1448607189425136 6.7871e-08  
a 2.310589297273151 1.2262e-08 au
q 1.975875670489285 1.5775e-07 au
i 2.640155578114711 6.6429e-06 deg
node 152.0582703642631 9.5343e-05 deg
peri 45.21742371489297 9.7202e-05 deg
M 242.8532126508561 2.29e-05 deg
tp 2459017.955747782651
(2020-Jun-17.45574778)
8.3528e-05 TDB
period 1282.869744894056
3.51
1.0212e-05
2.796e-08
d
yr
n .2806208513629964 2.2339e-09 deg/d
Q 2.645302924057016 1.4039e-08 au
  Orbit Determination Parameters
   # obs. used (total)      455  
   data-arc span      17375 days (47.57 yr)  
   first obs. used      1971-03-24  
   last obs. used      2018-10-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57143  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-31 01:30:15  

Additional Information
 Earth MOID = .975605 au 
 Jupiter MOID = 2.31126 au 
 T_jup = 3.569 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456327.5 (2013-Feb-04.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .144617767512726 6.7845e-08  
q 1.975975340262724 1.5758e-07 au
tp 2456452.946531459934
(2013-Jun-09.44653146)
7.3672e-05 TDB
node 152.0732015640062 9.5335e-05 deg
peri 45.31625382453471 9.7212e-05 deg
i 2.64003545106967 6.6445e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      455  
   data-arc span      17375 days (47.57 yr)  
   first obs. used      1971-03-24  
   last obs. used      2018-10-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57143  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-31 01:30:15  

Additional Information
 Jupiter MOID = 2.31126 au 
 T_jup = 3.569 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.602879573260985E-15 -1.066757460945326E-14 -2.62292322243591E-12 -4.935957919741804E-15 -5.807059722189532E-13 1.656162406645472E-15
q -1.066757460945326E-14 2.483233371239731E-14 6.359713622927996E-12 1.337460335610067E-14 1.41472202516431E-12 -3.469205936420244E-15
tp -2.62292322243591E-12 6.359713622927996E-12 5.427621823848267E-9 1.555276326352711E-11 1.407215047847581E-9 1.802802365382626E-12
node -4.935957919741804E-15 1.337460335610067E-14 1.555276326352711E-11 9.088736645360649E-9 -9.074520854098214E-9 1.246384882682394E-10
peri -5.807059722189532E-13 1.41472202516431E-12 1.407215047847581E-9 -9.074520854098214E-9 9.450260675520186E-9 -1.239634993354758E-10
i 1.656162406645472E-15 -3.469205936420244E-15 1.802802365382626E-12 1.246384882682394E-10 -1.239634993354758E-10 4.414947438992774E-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 16.4   n/a MPO469220  

117989 (4371 T-1)          Discovered 1971-Mar-26 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 4371 T-1 = 1999 CY135 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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