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186871 (2004 HE41)
Classification: Main-belt Asteroid          SPK-ID: 2186871
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09243540236169409 1.1766e-07  
a 2.566747791750173 1.8183e-08 au
q 2.329489426858756 3.055e-07 au
i 2.092560110877966 5.8179e-06 deg
node 71.54087875004809 0.00015254 deg
peri 331.5906931809133 0.000158 deg
M 177.0129864032243 3.7546e-05 deg
tp 2458461.956890050619
(2018-Dec-09.45689005)
0.00015446 TDB
period 1502.011377719653
4.11
1.596e-05
4.37e-08
d
yr
n .2396786105219458 2.5468e-09 deg/d
Q 2.80400615664159 1.9863e-08 au
  Orbit Determination Parameters
   # obs. used (total)      344  
   data-arc span      6294 days (17.23 yr)  
   first obs. used      2002-12-31  
   last obs. used      2020-03-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53848  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:53:03  

Additional Information
 Earth MOID = 1.33742 au 
 Jupiter MOID = 2.5187 au 
 T_jup = 3.425 
[ 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 16.83   n/a E2021B55  

186871 (2004 HE41)          Discovered 2004-Apr-19 by Spacewatch at Kitt Peak
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

Alternate Designations
 2004 HE41 = 2005 NL66 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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