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JPL Small-Body Database Browser
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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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1180608879110192 4.3088e-08  
a 2.401526052083487 8.672e-09 au
q 2.117999754033066 1.0334e-07 au
i .8658534577549682 3.7792e-06 deg
node 263.873178544805 0.00028358 deg
peri 138.994966286913 0.00028403 deg
M 276.802315674021 1.7796e-05 deg
tp 2459314.650762455130
(2021-Apr-10.15076246)
6.7997e-05 TDB
period 1359.344017806182
3.72
7.363e-06
2.016e-08
d
yr
n .2648336221621049 1.4345e-09 deg/d
Q 2.685052350133908 9.6958e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2038  
   data-arc span      24065 days (65.89 yr)  
   first obs. used      1953-09-07  
   last obs. used      2019-07-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4892  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:28:12  

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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