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308325 (2005 NS4)
Classification: Main-belt Asteroid          SPK-ID: 2308325
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1153868299764896 4.4066e-08  
a 2.9377095028479 3.1181e-08 au
q 2.598736515922471 1.3705e-07 au
i 11.34232222850583 5.8984e-06 deg
node 123.5116743661482 2.3772e-05 deg
peri 260.6386256422068 3.6243e-05 deg
M 315.7891744286964 3.0878e-05 deg
tp 2459426.359219516373
(2021-Jul-30.85921952)
0.00015951 TDB
period 1839.126910099379
5.04
2.9281e-05
8.017e-08
d
yr
n .1957450559953729 3.1165e-09 deg/d
Q 3.276682489773328 3.4779e-08 au
  Orbit Determination Parameters
   # obs. used (total)      234  
   data-arc span      6765 days (18.52 yr)  
   first obs. used      2001-12-19  
   last obs. used      2020-06-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61957  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:01:42  

Additional Information
 Earth MOID = 1.63024 au 
 Jupiter MOID = 2.24182 au 
 T_jup = 3.235 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457442.5 (2016-Feb-24.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1190103895731631 4.4001e-08  
q 2.586268628566958 1.3696e-07 au
tp 2457590.141325779411
(2016-Jul-20.64132578)
0.00014313 TDB
node 123.6028118036541 2.3846e-05 deg
peri 261.0092310953345 3.5668e-05 deg
i 11.32864792218393 5.8927e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      234  
   data-arc span      6765 days (18.52 yr)  
   first obs. used      2001-12-19  
   last obs. used      2020-06-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61957  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 19:01:42  

Additional Information
 Jupiter MOID = 2.24182 au 
 T_jup = 3.235 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.936110349615726E-15 -5.915711989202354E-15 -1.171012451729905E-12 -1.320866691643938E-14 -1.486627257540795E-13 6.949839579787938E-16
q -5.915711989202354E-15 1.875776921185742E-14 4.701691337027525E-12 4.421617948171924E-14 6.482599071307596E-13 -4.743598622730256E-16
tp -1.171012451729905E-12 4.701691337027525E-12 2.04858306291519E-8 6.077239994760625E-11 3.814673497688751E-9 -1.383248836455067E-12
node -1.320866691643938E-14 4.421617948171924E-14 6.077239994760625E-11 5.686176122308442E-10 -5.456506681281008E-10 -9.83382085528446E-12
peri -1.486627257540795E-13 6.482599071307596E-13 3.814673497688751E-9 -5.456506681281008E-10 1.272180493961058E-9 9.405232811751248E-12
i 6.949839579787938E-16 -4.743598622730256E-16 -1.383248836455067E-12 -9.83382085528446E-12 9.405232811751248E-12 3.472404529717927E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.21   n/a E2021B25  

308325 (2005 NS4)          Discovered 2005-Jul-03 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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