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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1180608825857 4.166e-08  
a 2.401526051327926 8.4803e-09 au
q 2.1179997661556 1.0032e-07 au
i .865853572972498 3.7448e-06 deg
node 263.8731697253206 0.00027969 deg
peri 138.9949753389953 0.00028015 deg
M 276.802316130008 1.7735e-05 deg
tp 2459314.650760585087
(2021-Apr-10.15076058)		 6.7738e-05 TDB
period 1359.344017164672
3.72		 7.2002e-06
1.971e-08		 d
yr
n .2648336222870868 1.4028e-09 deg/d
Q 2.685052336500252 9.4815e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2117  
   data-arc span      24380 days (66.75 yr)  
   first obs. used      1953-09-07  
   last obs. used      2020-06-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48612  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:16:01  

Additional Information
 Earth MOID = 1.1267 au 
 Jupiter MOID = 2.67156 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 13.6   n/a MPO272661  

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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