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22607 (1998 HD149)
Classification: Main-belt Asteroid          SPK-ID: 2022607
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0924350031081347 2.6435e-08  
a 2.631260606232254 9.2541e-09 au
q 2.388040023916863 6.9301e-08 au
i 1.507822444117884 3.2144e-06 deg
node 230.0902234000103 0.00014135 deg
peri 53.00580944810491 0.00014352 deg
M 66.19682424720219 2.3365e-05 deg
tp 2458913.832224310887
(2020-Mar-05.33222431)
0.0001016 TDB
period 1558.993205817457
4.27
8.2245e-06
2.252e-08
d
yr
n .2309182610011659 1.2182e-09 deg/d
Q 2.874481188547644 1.011e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1670  
   data-arc span      8855 days (24.24 yr)  
   first obs. used      1996-11-12  
   last obs. used      2021-02-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48748  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:08:10  

Additional Information
 Earth MOID = 1.37006 au 
 Jupiter MOID = 2.22839 au 
 T_jup = 3.393 
[ 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 14.6   n/a MPO474063  

22607 (1998 HD149)          Discovered 1998-Apr-25 by Elst, E. W. at La Silla
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HD149 = 1999 TL30 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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