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5558 (1989 WL2)
Classification: Inner Main-belt Asteroid          SPK-ID: 2005558
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1126274786412709 7.3363e-08  
a 1.935606787860045 1.2207e-08 AU
q 1.717604275702439 1.4263e-07 AU
i 23.38035299178739 1.0804e-05 deg
node 138.9089221036891 1.9435e-05 deg
peri 264.8556362362632 5.5495e-05 deg
M 53.26937052532289 5.8119e-05 deg
tp 2456654.954361522679
(2013-Dec-28.45436152)
0.00015829 JED
period 983.6127090506484
2.69
9.3048e-06
2.548e-08
d
yr
n .3659977109765697 3.4623e-09 deg/d
Q 2.153609300017651 1.3582e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      657  
   data-arc span      12852 days (35.19 yr)  
   first obs. used      1978-10-24  
   last obs. used      2013-12-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49986  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 18:13:28  

Additional Information
 Earth MOID = .830985 AU 
 T_jup = 3.801 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.0 mag n/a PDS3 (MPC 28113)  
rotation period rot_per 73.9 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D. (2009) Minor Planet Bul. 36, 109-116.]

5558 (1989 WL2)          Discovered 1989-Nov-24 by McNaught, R. H. at Siding Spring (413)
Reference: DISCOVERY.DBLast Updated: 2003-08-29
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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