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58631 (1997 WE2)
Classification: Main-belt Asteroid          SPK-ID: 2058631
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2143093689735219 5.3259e-08  
a 2.357457948644268 9.7994e-09 au
q 1.852232623288701 1.2356e-07 au
i 9.728330457033564 5.4072e-06 deg
node 74.86259444762541 2.3946e-05 deg
peri 294.7541460584993 2.6293e-05 deg
M 11.79563273349742 1.2871e-05 deg
tp 2458557.180533428720
(2019-Mar-14.68053343)
4.7127e-05 TDB
period 1322.100163509983
3.62
8.2435e-06
2.257e-08
d
yr
n .2722940439279974 1.6978e-09 deg/d
Q 2.862683273999834 1.1899e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1009  
   data-arc span      8049 days (22.04 yr)  
   first obs. used      1997-11-23  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55707  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 06:02:45  

Additional Information
 Earth MOID = .876723 au 
 Jupiter MOID = 2.64597 au 
 T_jup = 3.503 
[ 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 14.7   n/a MPO449377  
diameter diameter 7.348 km 0.128 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.98306 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.052   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58631 (1997 WE2)          Discovered 1997-Nov-23 by Kobayashi, T. at Oizumi
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 WE2 = 2001 XC27 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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