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3226 Plinius (6565 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2003226
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 68 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07462234314481579 3.5208e-08  
a 2.874219181004741 1.2095e-08 au
q 2.659738211006394 1.0234e-07 au
i 3.060741131035401 3.4638e-06 deg
node 98.8259668260206 6.7397e-05 deg
peri 305.2012098874696 7.1228e-05 deg
M 51.59450042859065 2.1868e-05 deg
tp 2458745.418382193506
0.00010824 TDB
period 1779.828889659163
n .2022666347824817 1.2767e-09 deg/d
Q 3.088700151003088 1.2997e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2381  
   data-arc span      25136 days (68.82 yr)  
   first obs. used      1951-12-27  
   last obs. used      2020-10-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48371  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:02:05  

Additional Information
 Earth MOID = 1.67018 au 
 Jupiter MOID = 2.20718 au 
 T_jup = 3.291 
[ 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 13.2   n/a MPO267720  
diameter diameter 7.020 km 0.131 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
geometric albedo albedo 0.206   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

3226 Plinius (6565 P-L)          Discovered 1960-Sep-24 by PLS at Palomar
These planets have all been discovered as a result of the Palomar survey of faint minor planets and subsequently identified with planets observed at other oppositions. In Sept. and Oct. 1960, T. Gehrels exposed 130 plates with the 122 cm Schmidt camera at Palomar. In the following years C. J. van Houten and I. van Houten-Groeneveld measured these plates astrometrically and photometrically at Leiden. P. Herget, Cincinnati, computed the orbits of the planets found on the NORC computer, Dahlgren, Virginia, USA.
Note: "planet" implies "minor planet"
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
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
1979-Mar-03 07:28 < 00:01 Inter 0.0480319512317255 0.0480300296890468 0.0480338728860298 6.25188973972847 6.25188969097818 2443935.811164082 0.494475981749705 154.004274593 27.729965266464 52.7529679736466 208115.52600223 T 68 CATAB v2.0f-lin.ifort 2020-Nov-13 04:02:12 2020-Nov-13 04:02

Alternate Designations
 6565 P-L = 1977 DR = 1982 DT3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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