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190339 (1998 SC117)
Classification: Mars-crossing Asteroid          SPK-ID: 2190339
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2904555043583747 5.8918e-08  
a 2.253516501579567 1.3816e-08 au
q 1.598970229533354 1.2818e-07 au
i 5.55880141848561 5.5198e-06 deg
node 339.082143249309 5.1784e-05 deg
peri 351.0719127521206 5.2926e-05 deg
M 228.3840834895766 1.6843e-05 deg
tp 2459652.247182206102
(2022-Mar-13.74718221)
6.1268e-05 TDB
period 1235.633120264123
3.38
1.1364e-05
3.111e-08
d
yr
n .2913486164267337 2.6794e-09 deg/d
Q 2.90806277362578 1.783e-08 au
  Orbit Determination Parameters
   # obs. used (total)      376  
   data-arc span      8218 days (22.50 yr)  
   first obs. used      1998-09-14  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55639  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:07:14  

Additional Information
 Earth MOID = .586604 au 
 Jupiter MOID = 2.46276 au 
 T_jup = 3.563 
[ 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 17.14   n/a E2021B55  

190339 (1998 SC117)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20080917/Numbers.arcLast Updated: 2008-09-19

[ show close-approach data ]
Alternate Designations
 1998 SC117 = 2008 OW10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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