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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1446650108205989 6.6873e-08  
a 2.310145194198026 7.5988e-09 au
q 1.975948014682214 1.5544e-07 au
i 2.640429486638606 5.9166e-06 deg
node 152.0531274030084 7.2249e-05 deg
peri 45.27675430422506 7.3991e-05 deg
M 355.0485073560061 1.7088e-05 deg
tp 2459018.139691235012
(2020-Jun-17.63969124)
6.0893e-05 TDB
period 1282.499904813009
3.51
6.3278e-06
1.732e-08
d
yr
n .2807017752196158 1.385e-09 deg/d
Q 2.644342373713839 8.698e-09 au
  Orbit Determination Parameters
   # obs. used (total)      660  
   data-arc span      17956 days (49.16 yr)  
   first obs. used      1971-03-24  
   last obs. used      2020-05-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51904  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 18:14:54  

Additional Information
 Earth MOID = .975332 au 
 Jupiter MOID = 2.31107 au 
 T_jup = 3.570 
[ show covariance matrix ]

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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