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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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456885.5 (2014-Aug-16.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2430803235114605 6.3307e-08  
q 1.87562302983607 1.512e-07 au
tp 2456952.408024175833
(2014-Oct-21.90802418)
2.9418e-05 TDB
node 147.8322269888183 3.2246e-05 deg
peri 222.394665193743 3.3535e-05 deg
i 6.75826664770381 5.4285e-06 deg
  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
 Jupiter MOID = 2.39121 au 
 T_jup = 3.429 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.007776823614806E-15 -9.555618490224985E-15 -9.565380942870056E-13 2.233814454541011E-14 -3.120067767335924E-13 -1.739970415915863E-14
q -9.555618490224985E-15 2.286115954635145E-14 2.243939934258169E-12 -5.201564828843554E-14 7.318090741552473E-13 4.181301602280308E-14
tp -9.565380942870056E-13 2.243939934258169E-12 8.654172603436205E-10 -4.22641746411266E-12 2.823000349746081E-10 4.677443112052938E-12
node 2.233814454541011E-14 -5.201564828843554E-14 -4.22641746411266E-12 1.039781224508169E-9 -1.033478919976613E-9 8.291945534130041E-11
peri -3.120067767335924E-13 7.318090741552473E-13 2.823000349746081E-10 -1.033478919976613E-9 1.124581710635605E-9 -8.097536943581257E-11
i -1.739970415915863E-14 4.181301602280308E-14 4.677443112052938E-12 8.291945534130041E-11 -8.097536943581257E-11 2.94689430078354E-11

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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