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JPL Small-Body Database Browser
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74038 (1998 HE74)
Classification: Main-belt Asteroid          SPK-ID: 2074038
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1679500258724653 3.503e-08  
a 2.34699011613238 1.0259e-08 au
q 1.952813065405526 8.4252e-08 au
i 1.852785881097446 4.2507e-06 deg
node 126.4126752783566 0.00013734 deg
peri 135.0750332120261 0.00013815 deg
M 266.0593851683713 1.7095e-05 deg
tp 2458943.201665732071
(2020-Apr-03.70166573)
6.3265e-05 TDB
period 1313.304153742961
3.60
8.6107e-06
2.357e-08
d
yr
n .2741177654650584 1.7973e-09 deg/d
Q 2.741167166859233 1.1982e-08 au
  Orbit Determination Parameters
   # obs. used (total)      826  
   data-arc span      7653 days (20.95 yr)  
   first obs. used      1998-04-21  
   last obs. used      2019-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55968  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:43:38  

Additional Information
 Earth MOID = .937472 au 
 Jupiter MOID = 2.32371 au 
 T_jup = 3.540 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456455.5 (2013-Jun-12.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1688841888360594 3.5042e-08  
q 1.950559771568455 8.4376e-08 au
tp 2456315.739414244924
(2013-Jan-23.23941424)
5.7749e-05 TDB
node 126.4208704233889 0.00013737 deg
peri 134.9823267737758 0.00013817 deg
i 1.852209199295412 4.2509e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      826  
   data-arc span      7653 days (20.95 yr)  
   first obs. used      1998-04-21  
   last obs. used      2019-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55968  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 07:43:38  

Additional Information
 Jupiter MOID = 2.32371 au 
 T_jup = 3.540 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.227941876679244E-15 -2.942195730717781E-15 -3.904977526080873E-13 2.157528148502764E-15 -8.614855547304137E-14 -9.228487637938028E-17
q -2.942195730717781E-15 7.119248268474091E-15 9.93894449200219E-13 -4.258454867102956E-15 2.209452745628444E-13 2.823115940996032E-16
tp -3.904977526080873E-13 9.93894449200219E-13 3.334911719130111E-9 -5.500873718927112E-13 8.775141596334852E-10 2.052627532801495E-13
node 2.157528148502764E-15 -4.258454867102956E-15 -5.500873718927112E-13 1.887039273010475E-8 -1.88604060076035E-8 1.341697392996899E-10
peri -8.614855547304137E-14 2.209452745628444E-13 8.775141596334852E-10 -1.88604060076035E-8 1.909073024407502E-8 -1.340400614655631E-10
i -9.228487637938028E-17 2.823115940996032E-16 2.052627532801495E-13 1.341697392996899E-10 -1.340400614655631E-10 1.807014247485375E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.0   n/a MPO426448  

74038 (1998 HE74)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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