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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05975498123961026 6.3582e-08  
a 2.558068856644534 2.1764e-08 AU
q 2.405211500106109 1.7205e-07 AU
i 15.28251415387428 8.5724e-06 deg
node 135.5759866910204 1.997e-05 deg
peri 306.3993106063672 7.585e-05 deg
M 61.97906985298932 7.1384e-05 deg
tp 2456543.218045677977
(2013-Sep-07.71804568)
0.00029649 JED
period 1494.399702603171
4.09
1.9071e-05
5.221e-08
d
yr
n .2408994055425049 3.0743e-09 deg/d
Q 2.71092621318296 2.3064e-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 = 1.44739 AU 
 T_jup = 3.384 
[ 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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