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469377 (2001 SM99)
Classification: Main-belt Asteroid          SPK-ID: 2469377
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .005996881854274169 8.1344e-08  
a 3.013377609731265 4.8292e-08 au
q 2.995306740223392 2.3655e-07 au
i 10.45268155944823 1.006e-05 deg
node 185.1205368579058 3.5201e-05 deg
peri 158.0192498638168 0.0007039 deg
M 221.7009060075534 0.00070304 deg
tp 2459734.499217027078
(2022-Jun-03.99921703)
0.0037342 TDB
period 1910.639545796157
5.23
4.5929e-05
1.257e-07
d
yr
n .1884185851758811 4.5294e-09 deg/d
Q 3.031448479239139 4.8582e-08 au
  Orbit Determination Parameters
   # obs. used (total)      133  
   data-arc span      6707 days (18.36 yr)  
   first obs. used      2001-09-12  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59099  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 13:57:18  

Additional Information
 Earth MOID = 1.99128 au 
 Jupiter MOID = 1.95702 au 
 T_jup = 3.223 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457319.5 (2015-Oct-24.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .004898469483397065 8.6421e-08  
q 2.998919233658421 2.5145e-07 au
tp 2457867.493331391528
(2017-Apr-23.99333139)
0.0041891 TDB
node 185.1438723041763 3.5205e-05 deg
peri 166.4294200580738 0.00079085 deg
i 10.45164346107822 1.006e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      133  
   data-arc span      6707 days (18.36 yr)  
   first obs. used      2001-09-12  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59099  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 13:57:18  

Additional Information
 Jupiter MOID = 1.95702 au 
 T_jup = 3.223 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.468620489257871E-15 -2.136125263147876E-14 1.699190154718826E-10 1.813217186782143E-14 3.200080971114381E-11 -2.267979754695758E-15
q -2.136125263147876E-14 6.322903131269451E-14 -4.886100150299066E-10 -4.036029627383153E-14 -9.214946720087807E-11 1.371035160504203E-14
tp 1.699190154718826E-10 -4.886100150299066E-10 1.754871612584561E-5 8.977919076062957E-10 3.309694149274062E-6 9.021125572210412E-11
node 1.813217186782143E-14 -4.036029627383153E-14 8.977919076062957E-10 1.239358965668189E-9 -1.048994774730579E-9 9.200786911278993E-11
peri 3.200080971114381E-11 -9.214946720087807E-11 3.309694149274062E-6 -1.048994774730579E-9 6.254416510387949E-7 -7.348954517882366E-11
i -2.267979754695758E-15 1.371035160504203E-14 9.021125572210412E-11 9.200786911278993E-11 -7.348954517882366E-11 1.012009716302104E-10

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 16.1   n/a MPO437768  

469377 (2001 SM99)          Discovered 2001-Sep-12 by Spacewatch at Kitt Peak
Reference: Last Updated: 2016-08-22

[ show close-approach data ]
Alternate Designations
 2001 SM99 = 2015 HW34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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