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170502 (2003 WM7)
Classification: Apollo [NEO]          SPK-ID: 2170502
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 81 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8801071489487579 6.9279e-08  
a 2.476814046552529 1.8942e-08 au
q .2969522975649467 1.7176e-07 au
i 10.40672705222726 1.9075e-05 deg
node 48.56283723937376 3.8262e-05 deg
peri 143.7848273015309 4.6063e-05 deg
M 52.21377367395208 9.2409e-06 deg
tp 2458793.999498157121
(2019-Nov-06.49949816)
3.4199e-05 TDB
period 1423.765712236244
3.90
1.6333e-05
4.472e-08
d
yr
n .2528505897466546 2.9006e-09 deg/d
Q 4.656675795540112 3.5613e-08 au
  Orbit Determination Parameters
   # obs. used (total)      543  
   # delay obs. used      2  
   # Doppler obs. used      1  
   data-arc span      5802 days (15.89 yr)  
   first obs. used      2003-11-18  
   last obs. used      2019-10-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36296  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Oct-08 05:58:30  

Additional Information
 Earth MOID = .0730377 au 
 Jupiter MOID = .494448 au 
 T_jup = 2.745 
[ 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 17.2   n/a MPO226968  
rotation period rot_per 7.2 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Vaduvescu, O.; Aznar Macias, A.; Tudor, V.; Predatu, M.; et al. (2017) Earth, Moon, and Planets 120, 41-100.]

170502 (2003 WM7)          Discovered 2003-Nov-18 by NEAT at Palomar
Reference: 20071124/Numbers.arcLast Updated: 2007-11-26

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