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173245 (1999 LY7)
Classification: Mars-crossing Asteroid          SPK-ID: 2173245
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2737017435906712 3.7955e-08  
a 2.269219701916243 9.2298e-09 au
q 1.648130312911464 8.9637e-08 au
i 6.151779789479717 3.874e-06 deg
node 105.2453376400295 4.7344e-05 deg
peri 168.9391352893879 4.8606e-05 deg
M 32.53294567173262 1.3535e-05 deg
tp 2458887.667520373488
(2020-Feb-08.16752037)
4.6403e-05 TDB
period 1248.571004771887
3.42
7.6177e-06
2.086e-08
d
yr
n .2883296173178168 1.7591e-09 deg/d
Q 2.890309090921021 1.1756e-08 au
  Orbit Determination Parameters
   # obs. used (total)      398  
   data-arc span      7329 days (20.07 yr)  
   first obs. used      1999-04-14  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56771  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 17:01:04  

Additional Information
 Earth MOID = .632275 au 
 Jupiter MOID = 2.24221 au 
 T_jup = 3.556 
[ 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 16.7   n/a MPO433112  

173245 (1999 LY7)          Discovered 1999-Jun-08 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

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