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30887 (1992 WL2)
Classification: Main-belt Asteroid          SPK-ID: 2030887
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1289449448370196 7.4318e-08  
a 2.68047030954265 2.6575e-08 AU
q 2.334837213341404 1.9424e-07 AU
i 14.05297768353499 9.2115e-06 deg
node 56.4180915532027 2.6777e-05 deg
peri 126.7740870933826 4.2706e-05 deg
M 255.8050466863132 3.4751e-05 deg
tp 2457464.437109277363
(2016-Mar-16.93710928)
0.00015797 JED
period 1602.931370745302
4.39
2.3838e-05
6.526e-08
d
yr
n .2245885298461741 3.3399e-09 deg/d
Q 3.026103405743896 3.0001e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      878  
   data-arc span      22159 days (60.67 yr)  
   first obs. used      1954-02-26  
   last obs. used      2014-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .62388  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 13:57:53  

Additional Information
 Earth MOID = 1.36312 AU 
 T_jup = 3.322 
[ 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 13.2 mag n/a MPO266108  

30887 (1992 WL2)          Discovered 1992-Nov-18 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1992 WL2 = 2000 ST344 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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