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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1652498295880953 8.7837e-08  
a 2.596615730176682 2.561e-08 AU
q 2.167525423259217 2.2232e-07 AU
i 9.932892884264533 1.014e-05 deg
node 21.77882357530862 3.8638e-05 deg
peri 38.32938964639342 4.6313e-05 deg
M 295.4627251200527 2.4573e-05 deg
tp 2457074.479503804854
(2015-Feb-20.97950380)
0.00010532 JED
period 1528.30471310145
4.18
2.261e-05
6.19e-08
d
yr
n .2355551199403406 3.4848e-09 deg/d
Q 3.025706037094146 2.9842e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      848  
   data-arc span      8329 days (22.80 yr)  
   first obs. used      1989-09-30  
   last obs. used      2012-07-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55329  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 16:30:00  

Additional Information
 Earth MOID = 1.18732 AU 
 T_jup = 3.376 
[ 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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