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78145 (2002 NL21)
Classification: Main-belt Asteroid          SPK-ID: 2078145
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07955463034886499 4.2074e-08  
a 2.929983944660651 2.1762e-08 au
q 2.696890155015064 1.229e-07 au
i 10.02217543301358 4.4912e-06 deg
node 263.5676444703372 2.5636e-05 deg
peri 55.75219288480259 4.0786e-05 deg
M 227.7289453027345 3.5152e-05 deg
tp 2459873.567473541155
(2022-Oct-21.06747354)
0.00018283 TDB
period 1831.87690632231
5.02
2.0409e-05
5.588e-08
d
yr
n .1965197545520341 2.1894e-09 deg/d
Q 3.163077734306239 2.3493e-08 au
  Orbit Determination Parameters
   # obs. used (total)      726  
   data-arc span      9959 days (27.27 yr)  
   first obs. used      1993-12-13  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52795  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:29:46  

Additional Information
 Earth MOID = 1.69602 au 
 Jupiter MOID = 2.06222 au 
 T_jup = 3.249 
[ 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 14.84   n/a MPCxxxxx  
diameter diameter 7.135 km 0.176 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

78145 (2002 NL21)          Discovered 2002-Jul-09 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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