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186915 (2004 NP8)
Classification: Main-belt Asteroid          SPK-ID: 2186915
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09174531012847555 4.5876e-08  
a 2.810384053680107 2.264e-08 au
q 2.552544497095103 1.2861e-07 au
i 4.803939167712617 4.4714e-06 deg
node 97.27850411558761 6.1326e-05 deg
peri 227.2911734831514 6.7211e-05 deg
M 156.3480553591058 2.8932e-05 deg
tp 2458453.127835277122
(2018-Nov-30.62783528)
0.00013634 TDB
period 1720.8655309608
4.71
2.0794e-05
5.693e-08
d
yr
n .2091970543445097 2.5279e-09 deg/d
Q 3.068223610265111 2.4717e-08 au
  Orbit Determination Parameters
   # obs. used (total)      265  
   data-arc span      7437 days (20.36 yr)  
   first obs. used      2000-10-01  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59571  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:53:14  

Additional Information
 Earth MOID = 1.5412 au 
 Jupiter MOID = 2.19289 au 
 T_jup = 3.310 
[ 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 16.45   n/a MPCxxxxx  

186915 (2004 NP8)          Discovered 2004-Jul-10 by Dellinger, J., Eastman, M. at Needville
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

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