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16468 (1990 HW1)
Classification: Main-belt Asteroid          SPK-ID: 2016468
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05969268542690208 5.7413e-08  
a 2.557274423621708 1.853e-08 AU
q 2.404623845902195 1.5201e-07 AU
i 15.28318154102702 6.4671e-06 deg
node 135.5772258889019 1.9662e-05 deg
peri 306.0991895709385 6.0387e-05 deg
M 110.4758052504367 5.8406e-05 deg
tp 2456542.116364710364
(2013-Sep-06.61636471)
0.00024068 JED
period 1493.703606234783
4.09
1.6235e-05
4.445e-08
d
yr
n .2410116695824691 2.6195e-09 deg/d
Q 2.709925001341221 1.9636e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1038  
   data-arc span      9245 days (25.31 yr)  
   first obs. used      1990-04-27  
   last obs. used      2015-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50685  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:45:45  

Additional Information
 Earth MOID = 1.44732 AU 
 T_jup = 3.385 
[ 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 13.6 mag n/a MPO279688  

16468 (1990 HW1)          Discovered 1990-Apr-27 by McNaught, R. H. at Siding Spring
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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