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74023 (1998 HK4)
Classification: Main-belt Asteroid          SPK-ID: 2074023
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1789150648149217 3.7917e-08  
a 2.31064312255479 9.2424e-09 au
q 1.897234258518746 8.9326e-08 au
i 5.514921116695207 3.8625e-06 deg
node 98.92536607102586 4.2985e-05 deg
peri 222.788579344791 4.4095e-05 deg
M 30.0589404655333 1.0953e-05 deg
tp 2458893.380409056553
(2020-Feb-13.88040906)
3.8854e-05 TDB
period 1282.914571917755
3.51
7.6973e-06
2.107e-08
d
yr
n .2806110460354789 1.6836e-09 deg/d
Q 2.724051986590833 1.0896e-08 au
  Orbit Determination Parameters
   # obs. used (total)      656  
   data-arc span      8137 days (22.28 yr)  
   first obs. used      1998-04-21  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59808  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 07:09:55  

Additional Information
 Earth MOID = .888686 au 
 Jupiter MOID = 2.58347 au 
 T_jup = 3.557 
[ 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 16.2   n/a MPO436300  

74023 (1998 HK4)          Discovered 1998-Apr-21 by Spacewatch at Kitt Peak
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 HK4 = 2002 RX119 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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