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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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .005996856814347448 7.9903e-08  
a 3.013377574488582 4.164e-08 au
q 2.995306780646808 2.3538e-07 au
i 10.45268270183474 9.9597e-06 deg
node 185.120522257638 3.0108e-05 deg
peri 158.0195553650684 0.00066253 deg
M 221.7006237319227 0.00066371 deg
tp 2459734.500702280929
(2022-Jun-04.00070228)
0.0035286 TDB
period 1910.639512277591
5.23
3.9603e-05
1.084e-07
d
yr
n .1884185884813297 3.9054e-09 deg/d
Q 3.031448368330356 4.1889e-08 au
  Orbit Determination Parameters
   # obs. used (total)      165  
   data-arc span      6878 days (18.83 yr)  
   first obs. used      2001-09-12  
   last obs. used      2020-07-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57356  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 04:20:48  

Additional Information
 Earth MOID = 1.99128 au 
 Jupiter MOID = 1.95702 au 
 T_jup = 3.223 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457785.5 (2017-Feb-01.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .005089234160163608 8.3096e-08  
q 2.999531472374033 2.4414e-07 au
tp 2457847.033903585670
(2017-Apr-03.53390359)
0.0039112 TDB
node 185.1383978176644 3.0105e-05 deg
peri 162.5454642473013 0.00073685 deg
i 10.4516980773457 9.9592e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      165  
   data-arc span      6878 days (18.83 yr)  
   first obs. used      2001-09-12  
   last obs. used      2020-07-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57356  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 04:20:48  

Additional Information
 Jupiter MOID = 1.95702 au 
 T_jup = 3.223 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.904992465136294E-15 -2.000852408928625E-14 1.91904122919893E-10 -2.006946128939863E-14 3.620138856690387E-11 4.422713510128428E-16
q -2.000852408928625E-14 5.96023997745673E-14 -5.147171204771061E-10 6.360826486902115E-14 -9.714806277196445E-11 5.686433343058029E-15
tp 1.91904122919893E-10 -5.147171204771061E-10 1.529768968625873E-5 -4.213136418865284E-10 2.879587511977258E-6 2.298719927978363E-10
node -2.006946128939863E-14 6.360826486902115E-14 -4.213136418865284E-10 9.063166594220471E-10 -9.698542174188126E-10 1.043567564576381E-10
peri 3.620138856690387E-11 -9.714806277196445E-11 2.879587511977258E-6 -9.698542174188126E-10 5.429411217761731E-7 -5.924899338750454E-11
i 4.422713510128428E-16 5.686433343058029E-15 2.298719927978363E-10 1.043567564576381E-10 -5.924899338750454E-11 9.91862273045628E-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 16.1   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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