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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1162291209106191 4.6731e-08  
a 2.94000135179661 3.768e-08 au
q 2.598287579201259 1.3981e-07 au
i 11.33898752455766 5.9573e-06 deg
node 123.5125371274085 2.6671e-05 deg
peri 260.4228370625827 3.8755e-05 deg
M 276.9518368196917 3.266e-05 deg
tp 2459425.263560588222
(2021-Jul-29.76356059)
0.00017186 TDB
period 1841.279517281579
5.04
3.5398e-05
9.691e-08
d
yr
n .1955162139268759 3.7587e-09 deg/d
Q 3.281715124391962 4.206e-08 au
  Orbit Determination Parameters
   # obs. used (total)      216  
   data-arc span      6367 days (17.43 yr)  
   first obs. used      2001-12-19  
   last obs. used      2019-05-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63123  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 18:16:35  

Additional Information
 Earth MOID = 1.63097 au 
 Jupiter MOID = 2.24046 au 
 T_jup = 3.234 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457162.5 (2015-May-20.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1190861652137787 4.6711e-08  
q 2.585844161181394 1.397e-07 au
tp 2457590.391177886950
(2016-Jul-20.89117789)
0.00015034 TDB
node 123.6039003997904 2.6743e-05 deg
peri 261.0783561492983 3.836e-05 deg
i 11.32941129180194 5.9529e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      216  
   data-arc span      6367 days (17.43 yr)  
   first obs. used      2001-12-19  
   last obs. used      2019-05-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63123  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 18:16:35  

Additional Information
 Jupiter MOID = 2.24046 au 
 T_jup = 3.234 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.18192499890934E-15 -6.34834422150252E-15 -4.438339367657289E-13 -1.24990811932438E-14 -4.01898509555759E-14 1.43752091253028E-15
q -6.34834422150252E-15 1.95159953385696E-14 3.408679651886442E-12 4.093250055241009E-14 4.572992029933372E-13 -1.885628209392502E-15
tp -4.438339367657289E-13 3.408679651886442E-12 2.260257619162397E-8 3.223709928769646E-11 4.160342616425088E-9 -1.435110476215083E-12
node -1.24990811932438E-14 4.093250055241009E-14 3.223709928769646E-11 7.152087176110038E-10 -6.948382786619324E-10 -8.286805389585591E-14
peri -4.01898509555759E-14 4.572992029933372E-13 4.160342616425088E-9 -6.948382786619324E-10 1.471500760072996E-9 -2.522153512298265E-13
i 1.43752091253028E-15 -1.885628209392502E-15 -1.435110476215083E-12 -8.286805389585591E-14 -2.522153512298265E-13 3.543673535886937E-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 16.0   n/a MPO437365  

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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