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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2301695186947894 5.4648e-08  
a 2.246472766401675 1.145e-08 au
q 1.729403210998049 1.2706e-07 au
i 10.52891899978811 6.6683e-06 deg
node 14.14510917993518 2.8291e-05 deg
peri 323.9952983551124 3.1478e-05 deg
M 345.6020792034046 1.3761e-05 deg
tp 2459249.686672506357
(2021-Feb-04.18667251)
4.7195e-05 TDB
period 1229.8443888145
3.37
9.4023e-06
2.574e-08
d
yr
n .2927199597560628 2.2379e-09 deg/d
Q 2.7635423218053 1.4085e-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58682  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 09:18:56  

Additional Information
 Earth MOID = .732005 au 
 Jupiter MOID = 2.66724 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 16.91   n/a E2021B25  

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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