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311999 (2007 NS2)
Classification: Mars-crossing Asteroid          SPK-ID: 2311999
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0540140720450454 2.0477e-07  
a 1.523759976441559 1.4826e-08 AU
q 1.441455495294688 3.1308e-07 AU
i 18.62132719198994 1.5847e-05 deg
node 282.4977510566663 1.6254e-05 deg
peri 176.83705786474 0.0001322 deg
M 179.9841829062808 0.0001144 deg
tp 2456657.017108674987
(2013-Dec-30.51710868)
0.00022164 JED
period 687.0261535225701
1.88
1.0027e-05
2.745e-08
d
yr
n .5239975190961538 7.6474e-09 deg/d
Q 1.60606445758843 1.5626e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      161  
   data-arc span      5516 days (15.10 yr)  
   first obs. used      1998-12-14  
   last obs. used      2014-01-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60886  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-12 13:59:51  

Additional Information
 Earth MOID = .458264 AU 
 T_jup = 4.439 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 18.1 mag n/a MPO288202  

311999 (2007 NS2)          Discovered 2007-Jul-14 by La Sagra at La Sagra (J75)
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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