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351621 (2005 WA174)
Classification: Mars-crossing Asteroid          SPK-ID: 2351621
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2854494308476855 6.8528e-08  
a 2.255796823636226 1.2759e-08 au
q 1.611880904221248 1.5476e-07 au
i 4.62862208315874 3.9645e-06 deg
node 121.1844481340873 7.0929e-05 deg
peri 258.2465754643866 7.1347e-05 deg
M 132.8748933572472 7.4467e-06 deg
tp 2458543.739198594653
(2019-Mar-01.23919859)
2.355e-05 TDB
period 1237.509091080347
3.39
1.05e-05
2.875e-08
d
yr
n .2909069538113208 2.4682e-09 deg/d
Q 2.899712743051203 1.6402e-08 au
  Orbit Determination Parameters
   # obs. used (total)      387  
   data-arc span      7797 days (21.35 yr)  
   first obs. used      1998-09-27  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47627  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 23:56:12  

Additional Information
 Earth MOID = .62217 au 
 Jupiter MOID = 2.57086 au 
 T_jup = 3.565 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457295.5 (2015-Sep-30.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2856281793347432 6.8872e-08  
q 1.61159370370274 1.5564e-07 au
tp 2457303.988972444172
(2015-Oct-08.48897244)
2.0602e-05 TDB
node 121.3287782393144 7.0907e-05 deg
peri 257.7470567447115 7.1321e-05 deg
i 4.629475927462702 3.9689e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      387  
   data-arc span      7797 days (21.35 yr)  
   first obs. used      1998-09-27  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47627  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 23:56:12  

Additional Information
 Jupiter MOID = 2.57086 au 
 T_jup = 3.565 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.743307281580532E-15 -1.070075390329095E-14 -3.321839349148904E-13 -1.78953040529318E-14 -2.230308360114198E-13 -2.190307898148219E-14
q -1.070075390329095E-14 2.422284955668613E-14 7.587196259746858E-13 4.370727186616614E-14 4.983953883671593E-13 4.969341182650735E-14
tp -3.321839349148904E-13 7.587196259746858E-13 4.244220332398372E-10 2.145427168971522E-12 1.791712989107587E-10 1.069032414304105E-12
node -1.78953040529318E-14 4.370727186616614E-14 2.145427168971522E-12 5.027757088915109E-9 -5.011725849365046E-9 8.347179728931072E-11
peri -2.230308360114198E-13 4.983953883671593E-13 1.791712989107587E-10 -5.011725849365046E-9 5.086683686263143E-9 -8.228701958718606E-11
i -2.190307898148219E-14 4.969341182650735E-14 1.069032414304105E-12 8.347179728931072E-11 -8.228701958718606E-11 1.575212259340135E-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 17.1   n/a MPO368394  

351621 (2005 WA174)          Discovered 2005-Nov-30 by LINEAR at Socorro
Reference: 20130127/Numbers.arcLast Updated: 2013-01-31

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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