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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1793288985825458 3.9839e-08  
a 2.310980812900068 9.948e-09 au
q 1.896555169077303 9.36e-08 au
i 5.514480227010595 4.0568e-06 deg
node 98.9287165940883 4.4424e-05 deg
peri 222.8847732683783 4.5515e-05 deg
M 277.7762202501204 1.0823e-05 deg
tp 2458893.581140378649
(2020-Feb-14.08114038)
3.9007e-05 TDB
period 1283.195820689187
3.51
8.2856e-06
2.268e-08
d
yr
n .2805495421631353 1.8115e-09 deg/d
Q 2.725406456722834 1.1732e-08 au
  Orbit Determination Parameters
   # obs. used (total)      629  
   data-arc span      7690 days (21.05 yr)  
   first obs. used      1998-04-21  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59463  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:40:55  

Additional Information
 Earth MOID = .887187 au 
 Jupiter MOID = 2.58036 au 
 T_jup = 3.557 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456748.5 (2014-Apr-01.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1782281689601011 3.9692e-08  
q 1.899875860254752 9.3006e-08 au
tp 2456325.940989477242
(2013-Feb-02.44098948)
3.8871e-05 TDB
node 98.9756365830835 4.4356e-05 deg
peri 222.6552974184207 4.548e-05 deg
i 5.517357008002199 4.0588e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      629  
   data-arc span      7690 days (21.05 yr)  
   first obs. used      1998-04-21  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59463  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:40:55  

Additional Information
 Jupiter MOID = 2.58036 au 
 T_jup = 3.557 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.575481356562491E-15 -3.677340010988378E-15 1.074687720758539E-13 2.552310262492951E-14 2.127873774670652E-14 -7.253560169243457E-16
q -3.677340010988378E-15 8.650027655979737E-15 -3.034776803065646E-13 -5.946954471864426E-14 -5.774384518656229E-14 1.829153477441027E-15
tp 1.074687720758539E-13 -3.034776803065646E-13 1.510917256198511E-9 1.107244904687595E-11 4.093733311784169E-10 1.463343071286748E-12
node 2.552310262492951E-14 -5.946954471864426E-14 1.107244904687595E-11 1.967424064019934E-9 -1.954637187837112E-9 2.401762110249116E-11
peri 2.127873774670652E-14 -5.774384518656229E-14 4.093733311784169E-10 -1.954637187837112E-9 2.06842435039741E-9 -2.348393883171218E-11
i -7.253560169243457E-16 1.829153477441027E-15 1.463343071286748E-12 2.401762110249116E-11 -2.348393883171218E-11 1.647423324344725E-11

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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