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175889 (1999 WJ16)
Classification: Main-belt Asteroid          SPK-ID: 2175889
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1634751547266495 6.494e-08  
a 2.403981604356104 1.2103e-08 au
q 2.010990339623971 1.5329e-07 au
i .9815099410528099 4.614e-06 deg
node 180.3291389844476 0.00033481 deg
peri 214.0505369219602 0.00033522 deg
M 247.915311534443 1.7818e-05 deg
tp 2459624.376095521984
(2022-Feb-13.87609552)
6.9389e-05 TDB
period 1361.429437659597
3.73
1.0281e-05
2.815e-08
d
yr
n .2644279534743042 1.9969e-09 deg/d
Q 2.796972869088238 1.4082e-08 au
  Orbit Determination Parameters
   # obs. used (total)      245  
   data-arc span      9005 days (24.65 yr)  
   first obs. used      1995-09-17  
   last obs. used      2020-05-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59419  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 09:54:47  

Additional Information
 Earth MOID = 1.01641 au 
 Jupiter MOID = 2.62694 au 
 T_jup = 3.505 
[ 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 17.52   n/a E2021B55  

175889 (1999 WJ16)          Discovered 1999-Nov-29 by Spacewatch at Kitt Peak
Reference: 20080221/Numbers.arcLast Updated: 2008-02-22

Alternate Designations
 1999 WJ16 = 1995 SX7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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