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146509 (2001 SY74)
Classification: Main-belt Asteroid          SPK-ID: 2146509
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1290422724438056 3.7209e-08  
a 2.765159696892079 1.3704e-08 au
q 2.4083372059351 1.0445e-07 au
i 12.2506542976837 4.2464e-06 deg
node 359.7484988920937 2.0262e-05 deg
peri 85.40240436086552 2.9468e-05 deg
M 11.7945568649733 1.8867e-05 deg
tp 2459145.475274827272
(2020-Oct-22.97527483)
8.8115e-05 TDB
period 1679.495150937727
4.60
1.2485e-05
3.418e-08
d
yr
n .2143501276553243 1.5934e-09 deg/d
Q 3.121982187849058 1.5472e-08 au
  Orbit Determination Parameters
   # obs. used (total)      864  
   data-arc span      7159 days (19.60 yr)  
   first obs. used      2001-09-11  
   last obs. used      2021-04-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51341  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 09:34:53  

Additional Information
 Earth MOID = 1.46108 au 
 Jupiter MOID = 2.15571 au 
 T_jup = 3.295 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.40   n/a MPCxxxxx  

146509 (2001 SY74)          Discovered 2001-Sep-19 by LONEOS at Anderson Mesa
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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