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186864 (2004 HN23)
Classification: Main-belt Asteroid          SPK-ID: 2186864
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07868468290146165 5.5109e-08  
a 2.55598871989975 1.58e-08 au
q 2.354871557974725 1.4352e-07 au
i 2.263813635733735 5.8593e-06 deg
node 1.929044667939508 0.00010865 deg
peri 204.4426680615568 0.00011284 deg
M 30.25967323372742 3.12e-05 deg
tp 2459075.041942408884
(2020-Aug-13.54194241)
0.00012896 TDB
period 1492.577278807522
4.09
1.384e-05
3.789e-08
d
yr
n .2411935416085242 2.2365e-09 deg/d
Q 2.757105881824775 1.7043e-08 au
  Orbit Determination Parameters
   # obs. used (total)      399  
   data-arc span      6826 days (18.69 yr)  
   first obs. used      2001-09-12  
   last obs. used      2020-05-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50897  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:53:01  

Additional Information
 Earth MOID = 1.34965 au 
 Jupiter MOID = 2.20334 au 
 T_jup = 3.432 
[ 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 16.73   n/a E2021B55  

186864 (2004 HN23)          Discovered 2004-Apr-16 by Spacewatch at Kitt Peak
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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