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7620 Willaert (4077 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2007620
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1470896612735461 4.1859e-08  
a 2.403731816280471 6.8081e-09 au
q 2.05016771763133 1.0156e-07 au
i 1.362346459868885 3.6947e-06 deg
node 317.6371576682284 0.00014957 deg
peri 214.188269974788 0.00014996 deg
M 250.6170175168444 1.2497e-05 deg
tp 2459614.094452361488
(2022-Feb-03.59445236)
4.811e-05 TDB
period 1361.217252172334
3.73
5.7831e-06
1.583e-08
d
yr
n .2644691722981651 1.1236e-09 deg/d
Q 2.757295914929611 7.8095e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1737  
   data-arc span      25519 days (69.87 yr)  
   first obs. used      1951-03-06  
   last obs. used      2021-01-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50853  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:38:23  

Additional Information
 Earth MOID = 1.05552 au 
 Jupiter MOID = 2.21098 au 
 T_jup = 3.509 
[ 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 14.76   n/a E2021B10  
diameter diameter 2.105 km 0.413 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.525   0.184 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

7620 Willaert (4077 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 4077 P-L = 1951 ED = 1962 CB1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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