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181790 (1998 DD26)
Classification: Main-belt Asteroid          SPK-ID: 2181790
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06821210572486801 3.8569e-08  
a 2.871591280662515 1.7421e-08 au
q 2.675713992627355 1.1225e-07 au
i 3.21038222870708 3.9434e-06 deg
node 110.8404507234802 8.8777e-05 deg
peri 216.7144479208324 9.5911e-05 deg
M 77.39017228952032 3.5361e-05 deg
tp 2458818.409993834106
(2019-Nov-30.90999383)
0.00017492 TDB
period 1777.38849973265
4.87
1.6174e-05
4.428e-08
d
yr
n .2025443509137986 1.8431e-09 deg/d
Q 3.067468568697676 1.8609e-08 au
  Orbit Determination Parameters
   # obs. used (total)      429  
   data-arc span      9302 days (25.47 yr)  
   first obs. used      1995-07-24  
   last obs. used      2021-01-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56255  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:03  

Additional Information
 Earth MOID = 1.66283 au 
 Jupiter MOID = 2.16006 au 
 T_jup = 3.292 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.97   n/a MPCxxxxx  

181790 (1998 DD26)          Discovered 1998-Feb-23 by Spacewatch at Kitt Peak
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

Alternate Designations
 1998 DD26 = 2005 QB25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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