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2413 van de Hulst (6816 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2002413
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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Orbit Diagram
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 2-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 has stopped working because of a recent Java upgrade, here is a possible workaround.
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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1152778113804088 4.7928e-08  
a 3.01368143518184 2.1541e-08 au
q 2.666270835136308 1.4216e-07 au
i 10.65520482097771 6.7749e-06 deg
node 166.5139629304783 2.6561e-05 deg
peri 253.463281267043 3.9517e-05 deg
M 188.3311595129494 2.9525e-05 deg
tp 2458511.741340065920
0.00015927 JED
period 1910.92851500023
n .1883900926560597 2.0198e-09 deg/d
Q 3.361092035227371 2.4024e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1375  
   data-arc span      31075 days (85.08 yr)  
   first obs. used      1931-03-15  
   last obs. used      2016-04-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52293  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:39:17  

Additional Information
 Earth MOID = 1.70063 au 
 Jupiter MOID = 2.04742 au 
 T_jup = 3.212 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.3 mag n/a MPO250223  
diameter diameter 22.82 km 2.0 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2
geometric albedo albedo 0.1624   0.032 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2

2413 van de Hulst (6816 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

Alternate Designations
 6816 P-L = 1931 EM = 1952 DV1 = 1973 FY1 = 1978 ER4 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
FirstGov 2016-May-06 03:35 UT
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