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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1339030360945894 3.8461e-08  
a 2.624648238532031 9.2764e-09 au
q 2.273199870712276 1.0257e-07 au
i 5.615764610078018 3.1318e-06 deg
node 99.23232147615531 3.9728e-05 deg
peri 308.0584890732285 4.1301e-05 deg
M 207.0309737684119 1.2005e-05 deg
tp 2460056.442485209284
(2023-Apr-21.94248521)		 5.3389e-05 TDB
period 1553.120265769738
4.25		 8.2339e-06
2.254e-08		 d
yr
n .2317914510127014 1.2288e-09 deg/d
Q 2.976096606351786 1.0519e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1876  
   data-arc span      10989 days (30.09 yr)  
   first obs. used      1991-05-18  
   last obs. used      2021-06-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47858  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 08:19:05  

Additional Information
 Earth MOID = 1.28797 au 
 Jupiter MOID = 2.38946 au 
 T_jup = 3.383 
[ 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 14.49   n/a E2021B10  

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

Alternate Designations
 1997 WE37 = 2001 PE63 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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