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129395 (1421 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2129395
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1903463367652997 7.9379e-08  
a 2.282112247344257 9.5102e-09 au
q 1.847720540975052 1.7776e-07 au
i 3.03222975537521 6.8521e-06 deg
node 8.571369132081397 8.5267e-05 deg
peri 3.427695693993219 8.6333e-05 deg
M 185.5498302758197 1.3151e-05 deg
tp 2459610.700873447884
(2022-Jan-31.20087345)
4.7896e-05 TDB
period 1259.226716652428
3.45
7.8713e-06
2.155e-08
d
yr
n .2858897410920858 1.7871e-09 deg/d
Q 2.716503953713462 1.132e-08 au
  Orbit Determination Parameters
   # obs. used (total)      329  
   data-arc span      17016 days (46.59 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58481  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 21:43:55  

Additional Information
 Earth MOID = .847834 au 
 Jupiter MOID = 2.74814 au 
 T_jup = 3.579 
[ 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 17.2   n/a MPO412839  

129395 (1421 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

Alternate Designations
 1421 T-2 = 2001 YB75 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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