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74593 (1999 PS4)
Classification: Main-belt Asteroid          SPK-ID: 2074593
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1567418285383275 3.4302e-08  
a 2.285250309186035 6.7515e-09 au
q 1.927055997056438 7.7764e-08 au
i 1.439815776034141 3.4623e-06 deg
node 258.6933436002367 0.00016702 deg
peri 163.0637451662877 0.00016747 deg
M 304.5288181536102 1.2009e-05 deg
tp 2459194.930328322838
(2020-Dec-11.43032832)
4.2112e-05 TDB
period 1261.824894772404
3.45
5.5918e-06
1.531e-08
d
yr
n .2853010758397926 1.2643e-09 deg/d
Q 2.643444621315633 7.8097e-09 au
  Orbit Determination Parameters
   # obs. used (total)      954  
   data-arc span      8744 days (23.94 yr)  
   first obs. used      1996-12-08  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52331  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:00:58  

Additional Information
 Earth MOID = .940036 au 
 Jupiter MOID = 2.65939 au 
 T_jup = 3.586 
[ 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 16.1   n/a MPO280227  

74593 (1999 PS4)          Discovered 1999-Aug-15 by Hug, G. at Farpoint
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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