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6311 Porubcan (1990 RQ2)
Classification: Main-belt Asteroid          SPK-ID: 2006311
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2254806263655121 2.9488e-08  
a 2.289116756992146 5.8097e-09 au
q 1.772965276801767 6.7545e-08 au
i 5.168013892902788 3.6608e-06 deg
node 344.0783736936379 3.6872e-05 deg
peri 70.07756772277871 3.7633e-05 deg
M 227.6016358226276 9.1763e-06 deg
tp 2459665.743658515275
(2022-Mar-27.24365852)
3.3196e-05 TDB
period 1265.028598398073
3.46
4.8159e-06
1.319e-08
d
yr
n .2845785466477785 1.0834e-09 deg/d
Q 2.805268237182525 7.1196e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1960  
   data-arc span      25708 days (70.38 yr)  
   first obs. used      1950-03-21  
   last obs. used      2020-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48952  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 18:33:18  

Additional Information
 Earth MOID = .791274 au 
 Jupiter MOID = 2.5879 au 
 T_jup = 3.560 
[ 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 13.89   n/a E2021B10  

6311 Porubcan (1990 RQ2)          Discovered 1990-Sep-15 by Holt, H. E. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1990 RQ2 = 1976 SR = 1978 GZ = 1981 BX = 1983 RW1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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