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55887 (1997 WE37)
Classification: Main-belt Asteroid          SPK-ID: 2055887
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .133814080917613 4.5123e-08  
a 2.62483207753138 9.8331e-09 au
q 2.273592585513449 1.1841e-07 au
i 5.615717504147576 3.2361e-06 deg
node 99.23286074885982 4.4314e-05 deg
peri 308.1047213169001 4.7117e-05 deg
M 161.5409830418021 1.4572e-05 deg
tp 2458503.502958365457
(2019-Jan-20.00295837)
6.2485e-05 TDB
period 1553.28344710831
4.25
8.7283e-06
2.39e-08
d
yr
n .2317670999907959 1.3024e-09 deg/d
Q 2.97607156954931 1.1149e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1724  
   data-arc span      10862 days (29.74 yr)  
   first obs. used      1991-05-18  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48732  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 11:12:46  

Additional Information
 Earth MOID = 1.28801 au 
 Jupiter MOID = 2.3884 au 
 T_jup = 3.383 
[ 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 14.49   n/a E2021B10  

55887 (1997 WE37)          Discovered 1997-Nov-29 by LINEAR at Socorro
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 WE37 = 2001 PE63 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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