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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1789150694997429 3.8451e-08  
a 2.310643121576423 9.3396e-09 au
q 1.897234246890475 9.0723e-08 au
i 5.514921274671639 3.8886e-06 deg
node 98.92536733734089 4.3033e-05 deg
peri 222.7885783153976 4.4139e-05 deg
M 30.05894087485206 1.0974e-05 deg
tp 2458893.380407665918
(2020-Feb-13.88040767)
3.8926e-05 TDB
period 1282.914571102943
3.51
7.7783e-06
2.13e-08
d
yr
n .2806110462137023 1.7013e-09 deg/d
Q 2.724051996262372 1.1011e-08 au
  Orbit Determination Parameters
   # obs. used (total)      653  
   data-arc span      7732 days (21.17 yr)  
   first obs. used      1998-04-21  
   last obs. used      2019-06-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59878  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:09:36  

Additional Information
 Earth MOID = .888686 au 
 Jupiter MOID = 2.58347 au 
 T_jup = 3.557 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456832.5 (2014-Jun-24.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1782267264117181 3.8289e-08  
q 1.900220107247996 9.0239e-08 au
tp 2456326.204130966929
(2013-Feb-02.70413097)
3.8221e-05 TDB
node 98.97471858374587 4.2982e-05 deg
peri 222.7400348261439 4.4116e-05 deg
i 5.516715201043692 3.8898e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      653  
   data-arc span      7732 days (21.17 yr)  
   first obs. used      1998-04-21  
   last obs. used      2019-06-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59878  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:09:36  

Additional Information
 Jupiter MOID = 2.58347 au 
 T_jup = 3.557 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.466022989669596E-15 -3.443075170461706E-15 1.238755597383594E-13 2.465384923748922E-14 3.018872302354031E-14 -7.743986451700267E-16
q -3.443075170461706E-15 8.143144491021648E-15 -3.240024622721287E-13 -5.740767544157966E-14 -7.441720174813983E-14 1.962508959972267E-15
tp 1.238755597383594E-13 -3.240024622721287E-13 1.46087788223308E-9 1.203120438116584E-11 3.971851084062882E-10 1.470771096006135E-12
node 2.465384923748922E-14 -5.740767544157966E-14 1.203120438116584E-11 1.847470421226111E-9 -1.834959012181266E-9 1.346673989108001E-11
peri 3.018872302354031E-14 -7.441720174813983E-14 3.971851084062882E-10 -1.834959012181266E-9 1.946220086662143E-9 -1.298524207689173E-11
i -7.743986451700267E-16 1.962508959972267E-15 1.470771096006135E-12 1.346673989108001E-11 -1.298524207689173E-11 1.51302768741798E-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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