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JPL Small-Body Database Browser
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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 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 
[ 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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