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181789 (1998 DD23)
Classification: Main-belt Asteroid          SPK-ID: 2181789
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03777396058500315 4.6989e-08  
a 2.807020870277213 2.2463e-08 au
q 2.70098857456208 1.3319e-07 au
i 2.787390820913943 5.506e-06 deg
node 326.7376038078464 9.767e-05 deg
peri 249.4551159640401 0.00012074 deg
M 236.6967646084626 7.3626e-05 deg
tp 2459788.854203867001
(2022-Jul-28.35420387)
0.00035343 TDB
period 1717.77741856932
4.70
2.062e-05
5.645e-08
d
yr
n .2095731356742552 2.5157e-09 deg/d
Q 2.913053165992345 2.3312e-08 au
  Orbit Determination Parameters
   # obs. used (total)      379  
   data-arc span      8363 days (22.90 yr)  
   first obs. used      1998-02-24  
   last obs. used      2021-01-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53558  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:03  

Additional Information
 Earth MOID = 1.69396 au 
 Jupiter MOID = 2.05998 au 
 T_jup = 3.320 
[ 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 16.03   n/a MPCxxxxx  

181789 (1998 DD23)          Discovered 1998-Feb-24 by Spacewatch at Kitt Peak
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

[ show close-approach data ]
Alternate Designations
 1998 DD23 = 2001 XX230 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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