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5050 Doctorwatson (1983 RD2)
Classification: Main-belt Asteroid          SPK-ID: 2005050
[ 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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .117854767575474 1.0831e-08  
a 2.400392423591408 5.9979e-09 au
q 2.117494732419114 2.8616e-08 au
i .8657532663476504 3.4626e-07 deg
node 263.8562704704595 5.4173e-05 deg
peri 139.2070138761487 5.4856e-05 deg
M 329.5905187215242 1.052e-05 deg
tp 2459315.243557120160
(2021-Apr-10.74355712)		 3.9853e-05 TDB
period 1358.38162397383
3.72		 5.0913e-06
1.394e-08		 d
yr
n .2650212529722323 9.9332e-10 deg/d
Q 2.683290114763702 6.7048e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2741  
   data-arc span      24625 days (67.42 yr)  
   first obs. used      1953-09-07  
   last obs. used      2021-02-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45638  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 17:14:40  

Additional Information
 Earth MOID = 1.12526 au 
 Jupiter MOID = 2.67246 au 
 T_jup = 3.516 
[ 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 13.71   n/a E2021B10  

5050 Doctorwatson (1983 RD2)          Discovered 1983-Sep-14 by Bowell, E. at Flagstaff
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1983 RD2 = 1972 TA7 = 1985 DB3 = 1987 UQ9 = 1987 WL1 = 1990 HR2 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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