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

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2246922802643104 5.5478e-08  
a 2.289554764173918 1.0726e-08 AU
q 1.775109483421665 1.2848e-07 AU
i 5.170481139936961 6.1229e-06 deg
node 344.1325716105988 6.1789e-05 deg
peri 70.10308013418535 6.3019e-05 deg
M 264.5015478531589 1.3479e-05 deg
tp 2457136.174856971455
(2015-Apr-23.67485697)
4.825e-05 JED
period 1265.391697908488
3.46
8.8922e-06
2.435e-08
d
yr
n .2844968878767172 1.9992e-09 deg/d
Q 2.804000044926171 1.3136e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      998  
   data-arc span      23482 days (64.29 yr)  
   first obs. used      1950-03-21  
   last obs. used      2014-07-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52587  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:14:13  

Additional Information
 Earth MOID = .793074 AU 
 T_jup = 3.560 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.7 mag n/a MPO265991  

6311 Porubcan (1990 RQ2)          Discovered 1990-Sep-15 by Holt, H. E. at Palomar (675)
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 | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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