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2256 Wisniewski (4519 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2002256
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1730316186302261 3.3217e-08  
a 3.09220315818294 1.4544e-08 au
q 2.557154240589048 1.0541e-07 au
i .4646969170575754 3.7977e-06 deg
node 116.3802807228174 0.00045939 deg
peri 192.2360976112021 0.00045952 deg
M 21.58002678855547 1.0978e-05 deg
tp 2458881.444370780094
(2020-Feb-01.94437078)
6.0457e-05 TDB
period 1986.097002525323
5.44
1.4012e-05
3.836e-08
d
yr
n .1812600288617625 1.2788e-09 deg/d
Q 3.627252075776831 1.7061e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2574  
   data-arc span      24138 days (66.09 yr)  
   first obs. used      1954-07-03  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49419  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:47:58  

Additional Information
 Earth MOID = 1.54249 au 
 Jupiter MOID = 1.63749 au 
 T_jup = 3.201 
[ 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 12.1   n/a MPO302074  
diameter diameter 16.637 km 2.821 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.101   0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

2256 Wisniewski (4519 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

[ show close-approach data ]
Alternate Designations
 4519 P-L = 1949 SU1 = 1965 OH = 1970 LP = 1971 UA2 = 1980 FF 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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