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4449 Sobinov (1987 RX3)
Classification: Main-belt Asteroid          SPK-ID: 2004449
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09658610365489853 3.4252e-08  
a 3.140222338885218 1.9189e-08 au
q 2.836920498562223 1.1017e-07 au
i 4.906128435649727 4.6199e-06 deg
node 299.049041911286 4.3527e-05 deg
peri 310.2635272080952 5.0504e-05 deg
M 63.33526091572418 2.3777e-05 deg
tp 2458642.912698223827
(2019-Jun-08.41269822)
0.00013461 TDB
period 2032.539643449425
5.56
1.8631e-05
5.101e-08
d
yr
n .1771183165653013 1.6235e-09 deg/d
Q 3.443524179208214 2.1043e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2347  
   data-arc span      24149 days (66.12 yr)  
   first obs. used      1953-08-11  
   last obs. used      2019-09-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46007  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 19:34:24  

Additional Information
 Earth MOID = 1.826 au 
 Jupiter MOID = 1.6286 au 
 T_jup = 3.198 
[ 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 11.7   n/a MPO439107  
diameter diameter 30.02 km 2.0 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5
geometric albedo albedo 0.0649   0.010 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 5

4449 Sobinov (1987 RX3)          Discovered 1987-Sep-03 by Chernykh, L. I. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1987 RX3 = 1953 PT = 1973 EJ = 1981 SP3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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