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18370 (1991 NS2)
Classification: Main-belt Asteroid          SPK-ID: 2018370
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1734655515839674 7.6992e-08  
a 2.551535214560513 1.6994e-08 au
q 2.108931751180857 2.0181e-07 au
i 7.663536885922391 5.5376e-06 deg
node 185.0071961010235 5.3505e-05 deg
peri 99.52611792617652 5.633e-05 deg
M 24.24527887552425 1.7811e-05 deg
tp 2457300.240517235088
(2015-Oct-04.74051723)
7.3549e-05 JED
period 1488.678021839744
4.08
1.4873e-05
4.072e-08
d
yr
n .2418252937966421 2.416e-09 deg/d
Q 2.994138677940169 1.9942e-08 au
  Orbit Determination Parameters
   # obs. used (total)      877  
   data-arc span      13106 days (35.88 yr)  
   first obs. used      1979-09-24  
   last obs. used      2015-08-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55087  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:50:10  

Additional Information
 Earth MOID = 1.10772 au 
 Jupiter MOID = 2.19887 au 
 T_jup = 3.406 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.8 mag n/a MPO296285  

18370 (1991 NS2)          Discovered 1991-Jul-12 by Holt, H. E. at Palomar
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 NS2 = 1979 SK8 = 1987 QB12 = 1987 RY3 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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