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187997 (2001 SC161)
Classification: Main-belt Asteroid          SPK-ID: 2187997
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1508601141534747 3.8588e-08  
a 2.547669243287432 1.3783e-08 au
q 2.163327570419794 9.8056e-08 au
i 13.2218498776379 4.8554e-06 deg
node 193.2858785699616 1.883e-05 deg
peri 206.9628900465234 2.705e-05 deg
M 240.6981598607275 2.2269e-05 deg
tp 2459692.718162280827
(2022-Apr-23.21816228)
9.4544e-05 TDB
period 1485.295936879405
4.07
1.2053e-05
3.3e-08
d
yr
n .242375940754512 1.9669e-09 deg/d
Q 2.932010916155071 1.5862e-08 au
  Orbit Determination Parameters
   # obs. used (total)      331  
   data-arc span      6848 days (18.75 yr)  
   first obs. used      2001-09-17  
   last obs. used      2020-06-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60333  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:57:40  

Additional Information
 Earth MOID = 1.17618 au 
 Jupiter MOID = 2.52322 au 
 T_jup = 3.389 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457646.5 (2016-Sep-15.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1510603131794546 3.8474e-08  
q 2.162210174292099 9.752e-08 au
tp 2458209.425094215855
(2018-Mar-31.92509422)
8.6826e-05 TDB
node 193.3100928583749 1.8828e-05 deg
peri 207.3470145773964 2.7046e-05 deg
i 13.22381235701637 4.8557e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      331  
   data-arc span      6848 days (18.75 yr)  
   first obs. used      2001-09-17  
   last obs. used      2020-06-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60333  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:57:40  

Additional Information
 Jupiter MOID = 2.52322 au 
 T_jup = 3.389 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.480285920205464E-15 -3.725249463804134E-15 -4.396277565877833E-13 -1.253157009816355E-14 -1.077518876445334E-13 2.535874566304367E-15
q -3.725249463804134E-15 9.510104491379911E-15 1.709132708426379E-12 3.188942184350634E-14 3.93409678323091E-13 -7.247756519326206E-15
tp -4.396277565877833E-13 1.709132708426379E-12 7.53867486348224E-9 -7.384649839355433E-12 1.701544493795335E-9 -1.244635250558512E-11
node -1.253157009816355E-14 3.188942184350634E-14 -7.384649839355433E-12 3.545022718343066E-10 -3.461827019943176E-10 -1.423018643436508E-11
peri -1.077518876445334E-13 3.93409678323091E-13 1.701544493795335E-9 -3.461827019943176E-10 7.314806350588271E-10 1.111488308045657E-11
i 2.535874566304367E-15 -7.247756519326206E-15 -1.244635250558512E-11 -1.423018643436508E-11 1.111488308045657E-11 2.357803043450529E-11

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 16.53   n/a E2021B55  

187997 (2001 SC161)          Discovered 2001-Sep-17 by LINEAR at Socorro
Reference: 20080618/Numbers.arcLast Updated: 2008-06-20

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