Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456762.5 (2014-Apr-15.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .22470481067203 2.9505e-08  
q 1.775078376150986 6.7563e-08 au
tp 2457136.168257950694
(2015-Apr-23.66825795)
2.9831e-05 TDB
node 344.1333291633414 3.6876e-05 deg
peri 70.10212318715512 3.7665e-05 deg
i 5.17043273197361 3.6893e-06 deg
  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
 Jupiter MOID = 2.5871 au 
 T_jup = 3.561 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.705443134298841E-16 -1.988811959781169E-15 -1.195749748544739E-14 -2.830116664113383E-15 -1.149582111684785E-15 -6.33751002401834E-16
q -1.988811959781169E-15 4.564706159488758E-15 6.694925887766302E-14 6.959462326154364E-15 1.005283529460059E-14 1.4866220884054E-15
tp -1.195749748544739E-14 6.694925887766302E-14 8.898883077421321E-10 6.517539248926084E-12 2.378278400588925E-10 -2.4619474537771E-13
node -2.830116664113383E-15 6.959462326154364E-15 6.517539248926084E-12 1.35984225752486E-9 -1.352223925340541E-9 2.068952240443319E-12
peri -1.149582111684785E-15 1.005283529460059E-14 2.378278400588925E-10 -1.352223925340541E-9 1.418678898678859E-9 -2.111862234986393E-12
i -6.33751002401834E-16 1.4866220884054E-15 -2.4619474537771E-13 2.068952240443319E-12 -2.111862234986393E-12 1.361066403090641E-11

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

[ 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Dec-04 01:43 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin