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186872 (2004 HE44)
Classification: Main-belt Asteroid          SPK-ID: 2186872
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1162744081584801 5.8876e-08  
a 2.484307998973885 2.2178e-08 au
q 2.195446556709819 1.5542e-07 au
i 5.325746812257394 6.5221e-06 deg
node 357.7003487634708 6.3581e-05 deg
peri 259.5514633826137 7.5668e-05 deg
M 57.3646358860116 5.1597e-05 deg
tp 2458972.597901590650
(2020-May-03.09790159)
0.00020302 TDB
period 1430.232305324765
3.92
1.9152e-05
5.244e-08
d
yr
n .2517073615661717 3.3706e-09 deg/d
Q 2.773169441237952 2.4757e-08 au
  Orbit Determination Parameters
   # obs. used (total)      248  
   data-arc span      7835 days (21.45 yr)  
   first obs. used      1997-09-23  
   last obs. used      2019-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61313  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:53:03  

Additional Information
 Earth MOID = 1.18667 au 
 Jupiter MOID = 2.29081 au 
 T_jup = 3.461 
[ 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 16.79   n/a MPCxxxxx  

186872 (2004 HE44)          Discovered 2004-Apr-21 by LINEAR at Socorro
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

[ show close-approach data ]
Alternate Designations
 2004 HE44 = 1997 SY5 = 2001 SM340 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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