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9942 (1989 TM1)
Classification: Main-belt Asteroid          SPK-ID: 2009942
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1651649110026353 8.0546e-08  
a 2.596185818088657 2.5176e-08 AU
q 2.16738701849774 2.0567e-07 AU
i 9.933532922400387 9.9337e-06 deg
node 21.77730647353715 3.6905e-05 deg
peri 38.37348151284861 4.4874e-05 deg
M 342.5384905941453 2.4095e-05 deg
tp 2457074.610777270423
(2015-Feb-21.11077727)
0.00010242 JED
period 1527.925175151624
4.18
2.2225e-05
6.085e-08
d
yr
n .2356136320381496 3.4272e-09 deg/d
Q 3.024984617679574 2.9334e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      853  
   data-arc span      9103 days (24.92 yr)  
   first obs. used      1989-09-30  
   last obs. used      2014-09-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53074  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:55:55  

Additional Information
 Earth MOID = 1.18794 AU 
 T_jup = 3.377 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.4 mag n/a MPO234897  

9942 (1989 TM1)          Discovered 1989-Oct-08 by Hioki, T., Kawasato, N. at Okutama (877)
Reference: 19990202/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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