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173238 (1999 DW3)
Classification: Main-belt Asteroid          SPK-ID: 2173238
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1597167025811423 1.8701e-07  
a 2.09424384039703 1.2102e-08 au
q 1.759758119807948 3.9961e-07 au
i 2.322135215791084 8.4921e-06 deg
node 288.225175192288 0.00015728 deg
peri 7.314610865421162 0.00016213 deg
M 231.6279536859725 3.153e-05 deg
tp 2459395.236476668628
(2021-Jun-29.73647667)
9.4482e-05 TDB
period 1106.978783006109
3.03
9.5952e-06
2.627e-08
d
yr
n .325209485065635 2.8189e-09 deg/d
Q 2.428729560986111 1.4035e-08 au
  Orbit Determination Parameters
   # obs. used (total)      375  
   data-arc span      7651 days (20.95 yr)  
   first obs. used      1999-02-21  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62508  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 17:01:01  

Additional Information
 Earth MOID = .743792 au 
 Jupiter MOID = 2.7489 au 
 T_jup = 3.736 
[ 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 17.7   n/a MPO454189  

173238 (1999 DW3)          Discovered 1999-Feb-21 by Spacewatch at Kitt Peak
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

Alternate Designations
 1999 DW3 = 2000 SD312 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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