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136668 (1995 ST9)
Classification: Main-belt Asteroid          SPK-ID: 2136668
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 .1975922610634367 5.0526e-08  
a 2.337119882236317 1.2005e-08 au
q 1.87532308032893 1.2147e-07 au
i 1.420055340699099 6.3572e-06 deg
node 160.3801569676167 0.00025763 deg
peri 153.3489464378064 0.00025825 deg
M 356.7283413589132 2.096e-05 deg
tp 2459012.360019279877
(2020-Jun-11.86001928)
7.6034e-05 TDB
period 1305.028246876463
3.57
1.0055e-05
2.753e-08
d
yr
n .2758560980282587 2.1255e-09 deg/d
Q 2.798916684143704 1.4377e-08 au
  Orbit Determination Parameters
   # obs. used (total)      135  
   data-arc span      8599 days (23.54 yr)  
   first obs. used      1995-09-17  
   last obs. used      2019-04-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59991  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:41:39  

Additional Information
 Earth MOID = .861516 au 
 Jupiter MOID = 2.48234 au 
 T_jup = 3.540 
[ 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 17.7   n/a MPO432828  

136668 (1995 ST9)          Discovered 1995-Sep-17 by Spacewatch at Kitt Peak
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

Alternate Designations
 1995 ST9 = 2002 PW38 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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