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186941 (2004 QH11)
Classification: Main-belt Asteroid          SPK-ID: 2186941
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03675745919223745 4.5428e-08  
a 2.964615367139745 2.5512e-08 au
q 2.855643638761425 1.3158e-07 au
i 11.63093196604489 5.4012e-06 deg
node 19.57989436407068 1.9791e-05 deg
peri 236.2097478795293 6.9118e-05 deg
M 145.0580983237908 6.7945e-05 deg
tp 2458449.239700703873
(2018-Nov-26.73970070)
0.00035007 TDB
period 1864.450939808364
5.10
2.4067e-05
6.589e-08
d
yr
n .1930863356678092 2.4925e-09 deg/d
Q 3.073587095518064 2.645e-08 au
  Orbit Determination Parameters
   # obs. used (total)      554  
   data-arc span      8704 days (23.83 yr)  
   first obs. used      1997-03-12  
   last obs. used      2021-01-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54678  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:53:19  

Additional Information
 Earth MOID = 1.85916 au 
 Jupiter MOID = 1.93373 au 
 T_jup = 3.233 
[ 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 15.21   n/a MPCxxxxx  

186941 (2004 QH11)          Discovered 2004-Aug-21 by Siding Spring Survey at Siding Spring
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

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