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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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05969267127840212 6.3439e-08  
a 2.557274428772114 2.146e-08 AU
q 2.404623886926757 1.7137e-07 AU
i 15.28317333395226 8.5729e-06 deg
node 135.5772200937484 1.9972e-05 deg
peri 306.0991575419377 7.6105e-05 deg
M 110.475840034366 7.1612e-05 deg
tp 2456542.116219000903
(2013-Sep-06.61621900)
0.00029739 JED
period 1493.70361074731
4.09
1.8802e-05
5.148e-08
d
yr
n .241011668854365 3.0337e-09 deg/d
Q 2.709924970617472 2.2741e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      945  
   data-arc span      8795 days (24.08 yr)  
   first obs. used      1990-04-27  
   last obs. used      2014-05-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5042  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 13:58:41  

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 (413)
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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