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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1817151509668032 8.7939e-08  
a 3.224857215418805 2.9122e-08 au
q 2.638851799672592 2.6731e-07 au
i 10.98002237526038 4.8533e-06 deg
node 128.7015814240538 3.5649e-05 deg
peri 235.7738280995318 3.8107e-05 deg
M 353.9694558643653 1.1053e-05 deg
tp 2459035.933835290055
(2020-Jul-05.43383529)
6.4904e-05 TDB
period 2115.26197595393
5.79
2.8653e-05
7.845e-08
d
yr
n .1701916850453708 2.3054e-09 deg/d
Q 3.810862631165018 3.4414e-08 au
  Orbit Determination Parameters
   # obs. used (total)      676  
   data-arc span      7956 days (21.78 yr)  
   first obs. used      1999-01-14  
   last obs. used      2020-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49421  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:27:21  

Additional Information
 Earth MOID = 1.65468 au 
 Jupiter MOID = 1.71727 au 
 T_jup = 3.133 
[ 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 14.5   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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