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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1554906890262054 4.7205e-08  
a 2.281591752290704 6.5127e-09 au
q 1.926825478650515 1.0604e-07 au
i 4.460464215812124 2.9438e-06 deg
node 289.6205398385029 6.7426e-05 deg
peri 48.97345748777009 6.8573e-05 deg
M 357.9162030444488 1.3884e-05 deg
tp 2459007.786319866198
(2020-Jun-07.28631987)
4.8556e-05 TDB
period 1258.795942111083
3.45
5.3897e-06
1.476e-08
d
yr
n .285987575870523 1.2245e-09 deg/d
Q 2.636358025930893 7.5253e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1230  
   data-arc span      7798 days (21.35 yr)  
   first obs. used      1999-07-13  
   last obs. used      2020-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4951  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:00:55  

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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