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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1643253847144076 3.1285e-08  
a 2.381070109635042 7.4478e-09 au
q 1.989799847837287 7.7225e-08 au
i 1.978926030884065 4.1894e-06 deg
node 185.8138027846672 8.4013e-05 deg
peri 275.0757679332664 8.512e-05 deg
M 303.3285887986551 1.3411e-05 deg
tp 2459411.760463494129
(2021-Jul-16.26046349)
5.036e-05 TDB
period 1342.012934664339
3.67
6.2966e-06
1.724e-08
d
yr
n .2682537483068613 1.2586e-09 deg/d
Q 2.772340371432797 8.6716e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1135  
   data-arc span      8174 days (22.38 yr)  
   first obs. used      1998-09-20  
   last obs. used      2021-02-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51925  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:35:34  

Additional Information
 Earth MOID = 1.00765 au 
 Jupiter MOID = 2.37694 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 15.85   n/a E2021B55  

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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