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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 ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .224749542013647 4.2759e-08  
a 2.289910626212538 9.823e-09 au
q 1.775254261719087 1.0163e-07 au
i 5.170574245355453 5.674e-06 deg
node 344.1292322797089 4.8715e-05 deg
peri 70.20902863908923 5.0246e-05 deg
M 75.11005873854593 1.3846e-05 deg
tp 2457136.428321240586
(2015-Apr-23.92832124)
4.7971e-05 JED
period 1265.686726252044
3.47
8.1441e-06
2.23e-08
d
yr
n .2844305723787065 1.8302e-09 deg/d
Q 2.80456699070599 1.2031e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1170  
   data-arc span      24013 days (65.74 yr)  
   first obs. used      1950-03-21  
   last obs. used      2015-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56168  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 12:59:34  

Additional Information
 Earth MOID = .79329 au 
 Jupiter MOID = 2.59171 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 13.8 mag n/a MPO328741  

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 | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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