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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05945795988909918 5.7336e-08  
a 2.557704842792677 1.8418e-08 au
q 2.405628930841755 1.5174e-07 au
i 15.28314472977928 6.42e-06 deg
node 135.5763845135606 1.964e-05 deg
peri 306.053244414322 6.0409e-05 deg
M 206.9295953313318 5.8858e-05 deg
tp 2458035.776507012788
(2017-Oct-09.27650701)
0.00024687 JED
period 1494.080733761957
4.09
1.6138e-05
4.418e-08
d
yr
n .2409508347608186 2.6026e-09 deg/d
Q 2.709780754743599 1.9513e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1047  
   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      .5084  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-28 16:36:17  

Additional Information
 Earth MOID = 1.44825 au 
 Jupiter MOID = 2.42006 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  
rotation period rot_per 94.13 h n/a LCDB (Rev. 2015-December); 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., in press.arXiv:1510.07422]

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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