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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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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 
[ 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 16.1   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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