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74789 (1999 SY5)
Classification: Mars-crossing Asteroid          SPK-ID: 2074789
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3196120232147813 3.9966e-08  
a 2.329656330891734 9.6477e-09 au
q 1.585070157580303 9.1609e-08 au
i 23.23259221433593 4.453e-06 deg
node 130.3337771327298 1.113e-05 deg
peri 272.4192379196123 1.349e-05 deg
M 287.6386770527653 1.0734e-05 deg
tp 2459261.559927342788
(2021-Feb-16.05992734)
3.9755e-05 TDB
period 1298.781863232853
3.56
8.0678e-06
2.209e-08
d
yr
n .2771828050508102 1.7218e-09 deg/d
Q 3.074242504203165 1.2731e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1148  
   data-arc span      9996 days (27.37 yr)  
   first obs. used      1993-01-24  
   last obs. used      2020-06-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48974  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:50:47  

Additional Information
 Earth MOID = .777966 au 
 Jupiter MOID = 2.73237 au 
 T_jup = 3.399 
[ 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 14.4   n/a MPO474634  

74789 (1999 SY5)          Discovered 1999-Sep-30 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

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