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101177 (1998 SM8)
Classification: Main-belt Asteroid          SPK-ID: 2101177
[ 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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .164181412550796 3.1512e-08  
a 2.381393462783008 7.5486e-09 au
q 1.990412920224062 7.7669e-08 au
i 1.978705525367615 4.2241e-06 deg
node 185.8152494793301 8.6586e-05 deg
peri 275.0237603072986 8.765e-05 deg
M 249.7188901897829 1.3368e-05 deg
tp 2459411.691179236200
(2021-Jul-16.19117924)		 5.0547e-05 TDB
period 1342.286315215497
3.67		 6.3823e-06
1.747e-08		 d
yr
n .268199113646036 1.2752e-09 deg/d
Q 2.772374005341953 8.788e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1109  
   data-arc span      8077 days (22.11 yr)  
   first obs. used      1998-09-20  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51695  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:02:00  

Additional Information
 Earth MOID = 1.00845 au 
 Jupiter MOID = 2.37728 au 
 T_jup = 3.519 
[ 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 15.8   n/a MPO280446  

101177 (1998 SM8)          Discovered 1998-Sep-20 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 SM8 = 2000 GQ27 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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