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18506 (1996 PY6)
Classification: Main-belt Asteroid          SPK-ID: 2018506
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2330309585381837 1.5904e-08  
a 2.309929145234749 8.9557e-09 au
q 1.771644142365407 3.7684e-08 au
i 23.21295811710642 9.0717e-07 deg
node 30.01655420957848 2.501e-06 deg
peri 283.6790551519816 7.528e-06 deg
M 344.8999637349138 9.3918e-06 deg
tp 2459254.286329027254
(2021-Feb-08.78632903)
3.3621e-05 TDB
period 1282.319996448085
3.51
7.4574e-06
2.042e-08
d
yr
n .280741157431194 1.6327e-09 deg/d
Q 2.848214148104089 1.1043e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1567  
   data-arc span      10343 days (28.32 yr)  
   first obs. used      1992-04-04  
   last obs. used      2020-07-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48442  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:30:35  

Additional Information
 Earth MOID = .897895 au 
 Jupiter MOID = 2.77651 au 
 T_jup = 3.444 
[ 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 14.36   n/a MPCxxxxx  
diameter diameter 3.927 km 0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.307   0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

18506 (1996 PY6)          Discovered 1996-Aug-15 by McNaught, R. H., Child, J. B. at Macquarie
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1935-Oct-19 01:24 < 00:01 Ceres 0.0214212785477531 0.0214142504815875 0.021428308978722 7.54062095372262 7.54061833831585 2428094.557999006 0.318407317340352 499.616861602772 42.8225785808037 -45.7894863731239 53688.9453097675 T 31 CATAB v2.0f-lin.ifort 2021-Apr-13 02:31:12 2021-Apr-13 02:31

Alternate Designations
 1996 PY6 = 1992 GX3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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