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74571 (1999 NQ8)
Classification: Main-belt Asteroid          SPK-ID: 2074571
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1554906904789052 4.7381e-08  
a 2.281591751899952 6.5999e-09 au
q 1.926825475006054 1.0653e-07 au
i 4.46046404141372 3.0456e-06 deg
node 289.6205364835326 6.8619e-05 deg
peri 48.97346060466044 6.9723e-05 deg
M 357.9162035589406 1.395e-05 deg
tp 2459007.786318065326
(2020-Jun-07.28631807)
4.8785e-05 TDB
period 1258.795941787706
3.45
5.4619e-06
1.495e-08
d
yr
n .2859875759439915 1.2409e-09 deg/d
Q 2.63635802879385 7.6261e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1182  
   data-arc span      7777 days (21.29 yr)  
   first obs. used      1999-07-13  
   last obs. used      2020-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4988  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:43:10  

Additional Information
 Earth MOID = .920971 au 
 Jupiter MOID = 2.73207 au 
 T_jup = 3.585 
[ 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 15.6   n/a MPO333435  

74571 (1999 NQ8)          Discovered 1999-Jul-13 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 NQ8 = 2001 BB25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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