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52639 (1997 WF45)
Classification: Main-belt Asteroid          SPK-ID: 2052639
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09557842891664997 3.2752e-08  
a 2.768195957186335 1.2236e-08 au
q 2.503616136665044 9.3298e-08 au
i 9.983489092754414 3.9732e-06 deg
node 80.20772944472931 1.9444e-05 deg
peri 59.97209590699644 2.8139e-05 deg
M 298.5439203465152 2.0591e-05 deg
tp 2459487.681211896166
(2021-Sep-30.18121190)
9.6506e-05 TDB
period 1682.262143396538
4.61
1.1154e-05
3.054e-08
d
yr
n .2139975635861062 1.4189e-09 deg/d
Q 3.032775777707627 1.3405e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1777  
   data-arc span      8496 days (23.26 yr)  
   first obs. used      1997-11-29  
   last obs. used      2021-03-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4988  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 10:46:41  

Additional Information
 Earth MOID = 1.53488 au 
 Jupiter MOID = 2.06185 au 
 T_jup = 3.310 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.01   n/a MPCxxxxx  
diameter diameter 4.229 km 0.516 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.327   0.107 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

52639 (1997 WF45)          Discovered 1997-Nov-29 by LINEAR at Socorro
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 WF45 = 1999 GL40 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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