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308722 (2006 HT18)
Classification: Main-belt Asteroid          SPK-ID: 2308722
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09826632735448891 3.8212e-08  
a 2.230859223487102 1.5037e-08 au
q 2.011640880750138 8.5569e-08 au
i 4.862785718042671 6.3477e-06 deg
node 172.2771235599893 4.8408e-05 deg
peri 290.8734654546357 5.8091e-05 deg
M 167.0433942621407 3.2809e-05 deg
tp 2458435.779595118977
(2018-Nov-13.27959512)
0.0001102 TDB
period 1217.04510768101
3.33
1.2305e-05
3.369e-08
d
yr
n .2957984036318536 2.9906e-09 deg/d
Q 2.450077566224067 1.6514e-08 au
  Orbit Determination Parameters
   # obs. used (total)      237  
   data-arc span      6333 days (17.34 yr)  
   first obs. used      2001-10-25  
   last obs. used      2019-02-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52547  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 07:16:22  

Additional Information
 Earth MOID = 1.03445 au 
 Jupiter MOID = 2.65073 au 
 T_jup = 3.631 
[ 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 17.8   n/a MPO423170  

308722 (2006 HT18)          Discovered 2006-Apr-23 by Sarneczky, K. at Piszkesteto
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12

[ show close-approach data ]
Alternate Designations
 2006 HT18 = 2006 ER19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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