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48439 (1989 WR2)
Classification: Main-belt Asteroid          SPK-ID: 2048439
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2407640529883569 5.3739e-08  
a 2.685078841737593 2.2586e-08 au
q 2.038608377207567 1.483e-07 au
i 13.28355703984968 8.4642e-06 deg
node 54.66758527556286 2.6548e-05 deg
peri 34.3067374988315 3.2603e-05 deg
M .2816616852513419 1.9014e-05 deg
tp 2457599.242641091621
(2016-Jul-29.74264109)
8.4871e-05 JED
period 1607.067026573447
4.40
2.0277e-05
5.552e-08
d
yr
n .2240105695949621 2.8265e-09 deg/d
Q 3.331549306267619 2.8024e-08 au
  Orbit Determination Parameters
   # obs. used (total)      826  
   data-arc span      10463 days (28.65 yr)  
   first obs. used      1987-05-30  
   last obs. used      2016-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48164  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 22:59:54  

Additional Information
 Earth MOID = 1.06636 au 
 Jupiter MOID = 2.00967 au 
 T_jup = 3.295 
[ 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 13.5 mag n/a MPO267868  

48439 (1989 WR2)          Discovered 1989-Nov-20 by Ueda, S., Kaneda, H. at Kushiro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1989 WR2 = 1987 KR3 = 1998 XW38 = 2000 HL57 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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