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78155 (2002 NA26)
Classification: Main-belt Asteroid          SPK-ID: 2078155
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1364509138444067 4.3031e-08  
a 2.432289584948513 1.0431e-08 au
q 2.100401448348056 1.0769e-07 au
i 6.785674835408122 4.4032e-06 deg
node 308.9487205328368 3.48e-05 deg
peri 42.27021946770106 3.7843e-05 deg
M 230.8710656124547 1.7321e-05 deg
tp 2459497.484007161890
(2021-Oct-09.98400716)
6.8343e-05 TDB
period 1385.547270461615
3.79
8.9129e-06
2.44e-08
d
yr
n .2598251302390144 1.6714e-09 deg/d
Q 2.76417772154897 1.1854e-08 au
  Orbit Determination Parameters
   # obs. used (total)      997  
   data-arc span      11986 days (32.82 yr)  
   first obs. used      1987-08-31  
   last obs. used      2020-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53946  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:27:59  

Additional Information
 Earth MOID = 1.09945 au 
 Jupiter MOID = 2.64949 au 
 T_jup = 3.484 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457013.5 (2014-Dec-22.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1354376659196508 4.3024e-08  
q 2.103277995790617 1.0759e-07 au
tp 2456722.592290772192
(2014-Mar-06.09229077)
6.1012e-05 TDB
node 309.031122965844 3.4723e-05 deg
peri 41.58493181218952 3.7833e-05 deg
i 6.793284579754375 4.4059e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      997  
   data-arc span      11986 days (32.82 yr)  
   first obs. used      1987-08-31  
   last obs. used      2020-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53946  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:27:59  

Additional Information
 Jupiter MOID = 2.64949 au 
 T_jup = 3.484 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.85105283223835E-15 -4.613867551737362E-15 -2.987708311109091E-13 -2.473028181286892E-15 -7.740961661327299E-14 1.280455910565977E-15
q -4.613867551737362E-15 1.157511385793152E-14 9.071764316562071E-13 5.152690013824266E-15 2.347367214043894E-13 -3.0254978004263E-15
tp -2.987708311109091E-13 9.071764316562071E-13 3.722465924503476E-9 -1.730189237374172E-11 9.337955889918397E-10 -1.073323914332958E-12
node -2.473028181286892E-15 5.152690013824266E-15 -1.730189237374172E-11 1.20571870150509E-9 -1.201283687994667E-9 3.963550964300729E-11
peri -7.740961661327299E-14 2.347367214043894E-13 9.337955889918397E-10 -1.201283687994667E-9 1.431330305817362E-9 -3.963065447259329E-11
i 1.280455910565977E-15 -3.0254978004263E-15 -1.073323914332958E-12 3.963550964300729E-11 -3.963065447259329E-11 1.941233250668663E-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 15.2   n/a MPO459355  
diameter diameter 2.566 km 0.301 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.268   0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

78155 (2002 NA26)          Discovered 2002-Jul-09 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2002 NA26 = 1987 QG4 = 2000 AE160 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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