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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09555537830696691 3.9532e-08  
a 2.767545976933601 1.4844e-08 au
q 2.503092074125786 1.0761e-07 au
i 9.984093455040904 4.1112e-06 deg
node 80.20546693788647 2.4267e-05 deg
peri 60.1110767900197 3.1668e-05 deg
M 255.597282772189 2.1263e-05 deg
tp 2459488.196899706715
(2021-Sep-30.69689971)
0.00010035 TDB
period 1681.669678302669
4.60
1.3529e-05
3.704e-08
d
yr
n .214072956565021 1.7222e-09 deg/d
Q 3.031999879741416 1.6262e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1430  
   data-arc span      8019 days (21.95 yr)  
   first obs. used      1997-11-29  
   last obs. used      2019-11-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52789  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 04:13:58  

Additional Information
 Earth MOID = 1.53448 au 
 Jupiter MOID = 2.06309 au 
 T_jup = 3.310 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456816.5 (2014-Jun-08.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09348940485485423 3.9621e-08  
q 2.510667244430272 1.0766e-07 au
tp 2456123.073001126215
(2012-Jul-14.57300113)
9.8679e-05 TDB
node 80.26387375208778 2.4297e-05 deg
peri 60.20862977705424 3.1958e-05 deg
i 9.975916875679633 4.1067e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1430  
   data-arc span      8019 days (21.95 yr)  
   first obs. used      1997-11-29  
   last obs. used      2019-11-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52789  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 04:13:58  

Additional Information
 Jupiter MOID = 2.06309 au 
 T_jup = 3.310 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.569801256685219E-15 -4.232846431038589E-15 -1.517460313397198E-13 4.872280782008757E-15 -2.410490771253881E-14 6.278343259260483E-18
q -4.232846431038589E-15 1.159125906097439E-14 4.143573118048804E-13 -1.154358053736776E-14 7.935966226906513E-14 5.073058803463564E-16
tp -1.517460313397198E-13 4.143573118048804E-13 9.7374466562091E-9 3.098405841009227E-13 2.069459381078441E-9 1.994123901689969E-12
node 4.872280782008757E-15 -1.154358053736776E-14 3.098405841009227E-13 5.903562668443667E-10 -5.807268823611089E-10 1.248208400207212E-11
peri -2.410490771253881E-14 7.935966226906513E-14 2.069459381078441E-9 -5.807268823611089E-10 1.021299249101532E-9 -1.1865282390235E-11
i 6.278343259260483E-18 5.073058803463564E-16 1.994123901689969E-12 1.248208400207212E-11 -1.1865282390235E-11 1.686526162154583E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.9   n/a MPO432083  
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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