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

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05398092972329819 8.5905e-08  
a 1.523734580082587 9.3324e-09 au
q 1.441481970798189 1.2568e-07 au
i 18.62132418387619 9.3596e-06 deg
node 282.4709814073357 1.3881e-05 deg
peri 177.0493839036226 6.884e-05 deg
M 252.5979051967414 6.429e-05 deg
tp 2459405.461675981474
(2021-Jul-09.96167598)
0.00012307 TDB
period 687.0089776972559
1.88
6.3116e-06
1.728e-08
d
yr
n .5240106194924299 4.8141e-09 deg/d
Q 1.605987189366984 9.8361e-09 au
  Orbit Determination Parameters
   # obs. used (total)      247  
   data-arc span      7916 days (21.67 yr)  
   first obs. used      1998-12-14  
   last obs. used      2020-08-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50561  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 06:28:15  

Additional Information
 Earth MOID = .458273 au 
 Jupiter MOID = 3.51063 au 
 T_jup = 4.439 
[ show covariance matrix ]

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

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

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

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