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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .22576424803013 2.9552e-08  
a 2.28851448634096 5.9102e-09 au
q 1.771849734226134 6.7703e-08 au
i 5.168078831798103 3.689e-06 deg
node 344.0891014066887 3.6914e-05 deg
peri 70.11036794215039 3.7689e-05 deg
M 170.6196771623023 9.2423e-06 deg
tp 2458401.184457440205
(2018-Oct-09.68445744)
3.1362e-05 TDB
period 1264.529384358699
3.46
4.8986e-06
1.341e-08
d
yr
n .2846908932706 1.1028e-09 deg/d
Q 2.805179238455787 7.2445e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1943  
   data-arc span      25708 days (70.38 yr)  
   first obs. used      1950-03-21  
   last obs. used      2020-08-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49158  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:36:46  

Additional Information
 Earth MOID = .790962 au 
 Jupiter MOID = 2.5871 au 
 T_jup = 3.561 
[ 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 13.8   n/a MPO328741  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1920-May-05 02:00 00:06 Amphi 0.0380722886171719 0.0380711555140409 0.0380734218547636 1.86607201550294 1.86607193458671 2422449.583428490 5.78730784852026 216.675435761665 47.530004004527 81.7918286122781 118384.601161628 T 28 CATAB v2.0f-lin.ifort 2020-Nov-13 03:36:51 2020-Nov-13 03:36
2034-Sep-20 05:13 00:02 Amphi 0.0424093062241271 0.0424082156883763 0.0424103967769667 2.00159193875569 2.00159187103266 2464225.717073451 1.87368882560183 109.419352745276 48.5656904866629 -75.6668297242002 127120.168596226 T 28 CATAB v2.0f-lin.ifort 2020-Nov-13 03:36:51 2020-Nov-13 03:36

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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