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16506 (1990 UH1)
Classification: Main-belt Asteroid          SPK-ID: 2016506
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .24340490791273 3.4558e-08  
a 2.363849240607174 6.7517e-09 au
q 1.788476733877608 8.2926e-08 au
i 9.559224078219735 3.3695e-06 deg
node 91.06008932309491 2.28e-05 deg
peri 307.2643024988114 2.3779e-05 deg
M 52.67400659330012 6.2669e-06 deg
tp 2458806.267481045378
(2019-Nov-18.76748105)
2.3116e-05 TDB
period 1327.480314219308
3.63
5.6874e-06
1.557e-08
d
yr
n .2711904622191826 1.1619e-09 deg/d
Q 2.939221747336739 8.395e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1864  
   data-arc span      23979 days (65.65 yr)  
   first obs. used      1955-03-22  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47533  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 03:02:54  

Additional Information
 Earth MOID = .815443 au 
 Jupiter MOID = 2.50843 au 
 T_jup = 3.491 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1   n/a MPO395162  
diameter diameter 8.105 km 0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.062   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

16506 (1990 UH1)          Discovered 1990-Oct-20 by McNaught, R. H. at Siding Spring
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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