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356986 (1997 SA4)
Classification: Main-belt Asteroid          SPK-ID: 2356986
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2301851561010658 5.4641e-08  
a 2.246072153503905 1.1329e-08 au
q 1.729059684235352 1.27e-07 au
i 10.52922902422857 6.6686e-06 deg
node 14.1617179310758 2.8292e-05 deg
peri 324.0452768797597 3.1482e-05 deg
M 287.0005166912847 1.3563e-05 deg
tp 2459249.816641311789
(2021-Feb-04.31664131)
4.7208e-05 TDB
period 1229.515426741776
3.37
9.3021e-06
2.547e-08
d
yr
n .2927982782241313 2.2152e-09 deg/d
Q 2.763084622772458 1.3936e-08 au
  Orbit Determination Parameters
   # obs. used (total)      240  
   data-arc span      8832 days (24.18 yr)  
   first obs. used      1996-03-20  
   last obs. used      2020-05-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58703  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 16:28:24  

Additional Information
 Earth MOID = .733418 au 
 Jupiter MOID = 2.66731 au 
 T_jup = 3.574 
[ 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 16.9   n/a MPO264883  

356986 (1997 SA4)          Discovered 1997-Sep-26 by Pravec, P. at Ondrejov
Reference: 20130327/Numbers.arcLast Updated: 2013-03-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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