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78306 (2002 PY61)
Classification: Outer Main-belt Asteroid          SPK-ID: 2078306
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1817151509808911 8.7933e-08  
a 3.224857214815002 2.9002e-08 au
q 2.638851799133078 2.6729e-07 au
i 10.98002239500377 4.7247e-06 deg
node 128.7015814880099 3.5436e-05 deg
peri 235.7738279073601 3.7911e-05 deg
M 353.9694561380283 1.0991e-05 deg
tp 2459035.933833672135
(2020-Jul-05.43383367)
6.4534e-05 TDB
period 2115.261975359856
5.79
2.8535e-05
7.812e-08
d
yr
n .1701916850931693 2.2959e-09 deg/d
Q 3.810862630496927 3.4272e-08 au
  Orbit Determination Parameters
   # obs. used (total)      686  
   data-arc span      7969 days (21.82 yr)  
   first obs. used      1999-01-14  
   last obs. used      2020-11-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49094  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 04:12:36  

Additional Information
 Earth MOID = 1.65468 au 
 Jupiter MOID = 1.71727 au 
 T_jup = 3.133 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457696.5 (2016-Nov-04.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1877189390413693 8.9921e-08  
q 2.616847912050441 2.7734e-07 au
tp 2456913.921853818039
(2014-Sep-13.42185382)
6.4755e-05 TDB
node 129.2650118864504 3.5477e-05 deg
peri 234.4736731154833 3.7451e-05 deg
i 10.97610072739148 4.7521e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      686  
   data-arc span      7969 days (21.82 yr)  
   first obs. used      1999-01-14  
   last obs. used      2020-11-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49094  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 04:12:36  

Additional Information
 Jupiter MOID = 1.71727 au 
 T_jup = 3.133 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.085703911622612E-15 -2.489596756828672E-14 -1.147198109010085E-12 -3.841130902357315E-14 -3.506850354584459E-13 -3.110189413684389E-14
q -2.489596756828672E-14 7.69161422203931E-14 3.167758076477402E-12 1.291718568445849E-13 1.021219648295642E-12 9.830640222668418E-14
tp -1.147198109010085E-12 3.167758076477402E-12 4.193228724381016E-9 1.157595816823154E-11 8.513113260024039E-10 4.100514097930724E-12
node -3.841130902357315E-14 1.291718568445849E-13 1.157595816823154E-11 1.258620789051584E-9 -1.232898788447072E-9 9.011247922601789E-11
peri -3.506850354584459E-13 1.021219648295642E-12 8.513113260024039E-10 -1.232898788447072E-9 1.40255799165334E-9 -8.733527993611977E-11
i -3.110189413684389E-14 9.830640222668418E-14 4.100514097930724E-12 9.011247922601789E-11 -8.733527993611977E-11 2.258252831995136E-11

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 14.5   n/a MPO432333  
diameter diameter 6.592 km 0.160 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.077   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78306 (2002 PY61)          Discovered 2002-Aug-08 by NEAT at Palomar
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2002 PY61 = 1999 AB31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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