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52642 (1997 WB55)
Classification: Main-belt Asteroid          SPK-ID: 2052642
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02710307736333873 4.3969e-08  
a 2.601408584882971 1.1033e-08 au
q 2.530902406753234 1.171e-07 au
i 2.158323084133632 4.8744e-06 deg
node 184.2811327479996 8.5751e-05 deg
peri 157.6627676146344 0.00010903 deg
M 296.4088263749646 6.9701e-05 deg
tp 2459667.210823565662
(2022-Mar-28.71082357)
0.00029743 TDB
period 1532.538101251063
4.20
9.75e-06
2.669e-08
d
yr
n .2349044370943338 1.4945e-09 deg/d
Q 2.671914763012707 1.1333e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1104  
   data-arc span      10564 days (28.92 yr)  
   first obs. used      1992-07-26  
   last obs. used      2021-06-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54456  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 14:23:24  

Additional Information
 Earth MOID = 1.52121 au 
 Jupiter MOID = 2.40867 au 
 T_jup = 3.413 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456611.5 (2013-Nov-15.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02625349955152416 4.3657e-08  
q 2.533150965710211 1.1628e-07 au
tp 2456586.950350962662
(2013-Oct-21.45035096)
0.00030149 TDB
node 184.3563259186128 8.5972e-05 deg
peri 154.1738943742992 0.00011093 deg
i 2.154334297319138 4.8713e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1104  
   data-arc span      10564 days (28.92 yr)  
   first obs. used      1992-07-26  
   last obs. used      2021-06-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54456  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 14:23:24  

Additional Information
 Jupiter MOID = 2.40867 au 
 T_jup = 3.413 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.905975881468914E-15 -5.054734905307023E-15 2.08460005325744E-12 9.805599841924385E-15 4.846162753233273E-13 -3.087414938225038E-16
q -5.054734905307023E-15 1.352067628759359E-14 -4.233574787998889E-12 -2.462848481651379E-14 -9.855040287229415E-13 8.552014563946626E-16
tp 2.08460005325744E-12 -4.233574787998889E-12 9.089656122539913E-8 7.128433423982882E-11 2.114168287804262E-8 -1.277040723461414E-12
node 9.805599841924385E-15 -2.462848481651379E-14 7.128433423982882E-11 7.391167423175445E-9 -7.368942895941881E-9 -5.203448521606964E-11
peri 4.846162753233273E-13 -9.855040287229415E-13 2.114168287804262E-8 -7.368942895941881E-9 1.230475293031576E-8 5.169894583385767E-11
i -3.087414938225038E-16 8.552014563946626E-16 -1.277040723461414E-12 -5.203448521606964E-11 5.169894583385767E-11 2.372958136208656E-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 15.23   n/a E2021B10  

52642 (1997 WB55)          Discovered 1997-Nov-29 by LINEAR at Socorro
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 WB55 = 1992 OC4 = 2001 SO59 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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