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129397 (1508 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2129397
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1474255425216433 4.4311e-08  
a 2.340571368179358 1.3833e-08 au
q 1.995511364414891 1.0307e-07 au
i 8.169229575244497 8.1679e-06 deg
node 352.7266941027112 3.1664e-05 deg
peri 288.339371588173 4.3182e-05 deg
M 77.97720342811702 3.2016e-05 deg
tp 2458717.200104825685
(2019-Aug-21.70010483)
0.00011548 TDB
period 1307.920235389956
3.58
1.1595e-05
3.175e-08
d
yr
n .2752461428908669 2.44e-09 deg/d
Q 2.685631371943825 1.5872e-08 au
  Orbit Determination Parameters
   # obs. used (total)      336  
   data-arc span      16727 days (45.80 yr)  
   first obs. used      1973-09-19  
   last obs. used      2019-07-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64088  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 17:54:24  

Additional Information
 Earth MOID = .99748 au 
 Jupiter MOID = 2.49904 au 
 T_jup = 3.536 
[ 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 16.3   n/a MPO436627  

129397 (1508 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
 1508 T-2 = 1998 RA8 = 2005 PH16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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