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101178 (1998 SY8)
Classification: Main-belt Asteroid          SPK-ID: 2101178
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02959243025120029 5.6584e-08  
a 2.764938498950845 2.3585e-08 au
q 2.683117249271784 1.617e-07 au
i 1.310993104499243 5.6262e-06 deg
node 150.8303903004292 0.00027358 deg
peri 97.28046049915508 0.00029079 deg
M 63.69169466461484 9.9151e-05 deg
tp 2458903.397063681528
(2020-Feb-23.89706368)
0.0004623 TDB
period 1679.29362906514
4.60
2.1486e-05
5.883e-08
d
yr
n .2143758505178225 2.7429e-09 deg/d
Q 2.846759748629907 2.4283e-08 au
  Orbit Determination Parameters
   # obs. used (total)      341  
   data-arc span      8456 days (23.15 yr)  
   first obs. used      1996-02-15  
   last obs. used      2019-04-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54339  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:35:34  

Additional Information
 Earth MOID = 1.66777 au 
 Jupiter MOID = 2.13489 au 
 T_jup = 3.339 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.2   n/a MPO469019  

101178 (1998 SY8)          Discovered 1998-Sep-20 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 SY8 = 2002 PQ156 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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