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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1336727707514909 5.008e-08  
a 2.625312879782375 1.1229e-08 au
q 2.274380033052289 1.3279e-07 au
i 5.615685419671036 3.6948e-06 deg
node 99.2350927099283 4.9683e-05 deg
peri 308.1653084127671 5.2459e-05 deg
M 115.1270270205515 1.488e-05 deg
tp 2458503.627661460074
(2019-Jan-20.12766146)
6.412e-05 TDB
period 1553.710249483314
4.25
9.9687e-06
2.729e-08
d
yr
n .2317034338414887 1.4866e-09 deg/d
Q 2.976245726512461 1.2731e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1495  
   data-arc span      10430 days (28.56 yr)  
   first obs. used      1991-05-18  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50506  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 05:39:23  

Additional Information
 Earth MOID = 1.28967 au 
 Jupiter MOID = 2.38727 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 14.5   n/a MPO459234  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2015-Dec-02 21:20 < 00:01 Hebe 0.0493633390426401 0.0493624438781962 0.0493642342317609 3.48938547455601 3.48938543846458 2457359.388789764 0.88967124169818 88.7178029427499 31.0896075736418 67.362199596903 221371.198043998 T 23 CATAB v2.0f-lin.ifort 2019-Dec-14 05:39:39 2019-Dec-14 05:39
2141-Aug-05 12:08 00:04 Amphi 0.0428516909729263 0.0428214561316077 0.0428819258132908 3.28924045585569 3.28924041506984 2503261.005613000 4.30196611519873 1506.70811224877 32.7515751230312 0.479707175837431 4554.61981358481 T 23 CATAB v2.0f-lin.ifort 2019-Dec-14 05:39:39 2019-Dec-14 05:39

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