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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0918059254415301 4.5886e-08  
a 2.810246647374625 2.2689e-08 au
q 2.55224935319344 1.2863e-07 au
i 4.803704887343735 4.4711e-06 deg
node 97.2755649619226 6.1336e-05 deg
peri 227.3695728831318 6.7208e-05 deg
M 197.2613574015648 2.9032e-05 deg
tp 2460174.363284165484
(2023-Aug-17.86328417)
0.00014154 TDB
period 1720.73932674099
4.71
2.0839e-05
5.705e-08
d
yr
n .2092123974883664 2.5337e-09 deg/d
Q 3.068243941555809 2.4772e-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 = 1.5422 au 
 Jupiter MOID = 2.19221 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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