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JPL Small-Body Database Browser
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176641 (2002 NQ9)
Classification: Main-belt Asteroid          SPK-ID: 2176641
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2441051512130915 6.3153e-08  
a 2.477175687629486 1.414e-08 au
q 1.872484341819296 1.5082e-07 au
i 6.752473447215407 5.4239e-06 deg
node 147.7423974611091 3.2325e-05 deg
peri 223.0588142643332 3.3584e-05 deg
M 156.6815337689701 6.7899e-06 deg
tp 2458380.703736431677
(2018-Sep-19.20373643)
2.6317e-05 TDB
period 1424.077550923142
3.90
1.2193e-05
3.338e-08
d
yr
n .2527952215570242 2.1644e-09 deg/d
Q 3.081867033439675 1.7591e-08 au
  Orbit Determination Parameters
   # obs. used (total)      582  
   data-arc span      6959 days (19.05 yr)  
   first obs. used      2000-01-07  
   last obs. used      2019-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53949  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 16:47:27  

Additional Information
 Earth MOID = .878242 au 
 Jupiter MOID = 2.39121 au 
 T_jup = 3.429 
[ 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 16.1   n/a MPO412978  

176641 (2002 NQ9)          Discovered 2002-Jul-03 by NEAT at Palomar
Reference: 20080221/Numbers.arcLast Updated: 2008-02-22

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