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192484 (1998 HE4)
Classification: Main-belt Asteroid          SPK-ID: 2192484
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1092108812430331 4.1652e-08  
a 2.656140958677265 2.1563e-08 au
q 2.366061463874406 1.1759e-07 au
i 6.554849566517453 4.3769e-06 deg
node 155.5430710024523 5.9507e-05 deg
peri 183.1759019295954 6.731e-05 deg
M 324.8886062914344 3.2724e-05 deg
tp 2459354.712888934975
(2021-May-20.21288894)
0.00014435 TDB
period 1581.157400853824
4.33
1.9254e-05
5.271e-08
d
yr
n .2276813173727044 2.7725e-09 deg/d
Q 2.946220453480124 2.3918e-08 au
  Orbit Determination Parameters
   # obs. used (total)      204  
   data-arc span      8102 days (22.18 yr)  
   first obs. used      1998-04-19  
   last obs. used      2020-06-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59872  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:16:18  

Additional Information
 Earth MOID = 1.3551 au 
 Jupiter MOID = 2.41591 au 
 T_jup = 3.370 
[ show covariance matrix ]

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 16.64   n/a E2021B55  

192484 (1998 HE4)          Discovered 1998-Apr-19 by Spacewatch at Kitt Peak
Reference: 20081113/Numbers.arcLast Updated: 2008-11-17

[ show close-approach data ]
Alternate Designations
 1998 HE4 = 2007 LH34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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