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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05932299175024044 5.641e-08  
a 2.558063346398815 1.839e-08 au
q 2.406311375603805 1.4948e-07 au
i 15.28226196345234 6.3959e-06 deg
node 135.576836506366 1.9516e-05 deg
peri 305.9775736119117 6.0327e-05 deg
M 255.1843723870618 5.8961e-05 deg
tp 2458035.599823960204
(2017-Oct-09.09982396)
0.00024653 JED
period 1494.394874055392
4.09
1.6115e-05
4.412e-08
d
yr
n .2409001839139445 2.5977e-09 deg/d
Q 2.709815317193824 1.9481e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1053  
   data-arc span      9288 days (25.43 yr)  
   first obs. used      1990-04-27  
   last obs. used      2015-10-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50738  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 19:10:35  

Additional Information
 Earth MOID = 1.44765 au 
 Jupiter MOID = 2.41921 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  
rotation period rot_per 94.13 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 sidereal period (not synodic); Incomplete or inconclusive result.
Published Reference List:
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2015) Astron. Astrophys. 586, A108.]

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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