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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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05969266007262818 6.2078e-08  
a 2.557274434251555 2.0795e-08 AU
q 2.404623920735354 1.6704e-07 AU
i 15.28317424278739 8.2876e-06 deg
node 135.5772226832371 1.9875e-05 deg
peri 306.0991436650407 7.3235e-05 deg
M 110.4758490238226 6.9115e-05 deg
tp 2456542.116180228800
(2013-Sep-06.61618023)
0.00028674 JED
period 1493.703615548121
4.09
1.8219e-05
4.988e-08
d
yr
n .2410116680797459 2.9397e-09 deg/d
Q 2.709924947767755 2.2036e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      965  
   data-arc span      9070 days (24.83 yr)  
   first obs. used      1990-04-27  
   last obs. used      2015-02-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50617  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 14:46:39  

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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