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78207 (2002 NU55)
Classification: Main-belt Asteroid          SPK-ID: 2078207
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 .1426779692892526 4.6671e-08  
a 2.735019334959752 1.718e-08 au
q 2.344792330280853 1.3219e-07 au
i 6.16575636988725 4.3131e-06 deg
node 257.3017414947055 4.3214e-05 deg
peri 135.2042212036295 4.6126e-05 deg
M 272.2667529521985 1.7764e-05 deg
tp 2459403.124993227883
(2021-Jul-07.62499323)
8.3212e-05 TDB
period 1652.110259672305
4.52
1.5567e-05
4.262e-08
d
yr
n .2179031320048856 2.0532e-09 deg/d
Q 3.125246339638652 1.9632e-08 au
  Orbit Determination Parameters
   # obs. used (total)      593  
   data-arc span      8007 days (21.92 yr)  
   first obs. used      1998-09-17  
   last obs. used      2020-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58369  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:27:45  

Additional Information
 Earth MOID = 1.3561 au 
 Jupiter MOID = 2.3113 au 
 T_jup = 3.329 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2   n/a MPO474672  
diameter diameter 4.918 km 0.319 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.055   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78207 (2002 NU55)          Discovered 2002-Jul-12 by NEAT at Palomar
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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