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186771 (2004 DQ18)
Classification: Main-belt Asteroid          SPK-ID: 2186771
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08388193107291966 3.8561e-08  
a 2.353059704799104 1.1654e-08 au
q 2.155680512830681 9.1048e-08 au
i 7.293323785354907 3.6298e-06 deg
node 149.2506275298414 3.4648e-05 deg
peri 106.06547686 4.5031e-05 deg
M 162.5962320725152 3.173e-05 deg
tp 2458605.035570744538
(2019-May-01.53557074)
0.00011374 TDB
period 1318.401981396236
3.61
9.7945e-06
2.682e-08
d
yr
n .2730578420541714 2.0286e-09 deg/d
Q 2.550438896767528 1.2632e-08 au
  Orbit Determination Parameters
   # obs. used (total)      691  
   data-arc span      8680 days (23.76 yr)  
   first obs. used      1997-04-07  
   last obs. used      2021-01-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5818  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:52:38  

Additional Information
 Earth MOID = 1.15273 au 
 Jupiter MOID = 2.49483 au 
 T_jup = 3.541 
[ 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 16.16   n/a E2021B55  

186771 (2004 DQ18)          Discovered 2004-Feb-18 by NEAT at Haleakala
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

[ show close-approach data ]
Alternate Designations
 2004 DQ18 = 1997 GM39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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