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18945 (2000 QH71)
Classification: Main-belt Asteroid          SPK-ID: 2018945
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2028911320683325 3.2632e-08  
a 2.424917693460333 8.3776e-09 au
q 1.932923397461636 8.0493e-08 au
i 2.561515452312927 3.6518e-06 deg
node 216.6059397389155 8.0757e-05 deg
peri 4.072821846250718 8.1395e-05 deg
M 226.4711850657948 1.2624e-05 deg
tp 2459712.083376901307
(2022-May-12.58337690)
4.9948e-05 TDB
period 1379.252978282016
3.78
7.1476e-06
1.957e-08
d
yr
n .2610108556360795 1.3526e-09 deg/d
Q 2.916911989459029 1.0077e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1524  
   data-arc span      9958 days (27.26 yr)  
   first obs. used      1993-10-12  
   last obs. used      2021-01-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55098  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:40:56  

Additional Information
 Earth MOID = .923739 au 
 Jupiter MOID = 2.05862 au 
 T_jup = 3.481 
[ 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 14.8   n/a MPO347672  

18945 (2000 QH71)          Discovered 2000-Aug-24 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2000 QH71 = 1999 CN61 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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