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91189 (1998 SM1)
Classification: Outer Main-belt Asteroid          SPK-ID: 2091189
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1600013445028236 4.1197e-08  
a 3.218196291027046 2.7893e-08 au
q 2.703280557588719 1.4089e-07 au
i 33.85568540379025 5.6697e-06 deg
node 200.7775818013655 8.906e-06 deg
peri 124.5787248889058 2.0758e-05 deg
M 318.4109256675364 1.8053e-05 deg
tp 2459244.109362483735
(2021-Jan-29.60936248)
0.0001065 TDB
period 2108.711768698542
5.77
2.7416e-05
7.506e-08
d
yr
n .1707203446880677 2.2196e-09 deg/d
Q 3.733112024465373 3.2356e-08 au
  Orbit Determination Parameters
   # obs. used (total)      849  
   data-arc span      7991 days (21.88 yr)  
   first obs. used      1998-09-14  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53516  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 08:16:16  

Additional Information
 Earth MOID = 1.79609 au 
 Jupiter MOID = 1.99412 au 
 T_jup = 2.906 
[ 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 14.0   n/a MPO474790  

91189 (1998 SM1)          Discovered 1998-Sep-16 by ODAS at Caussols
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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