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74808 (1999 TW1)
Classification: Main-belt Asteroid          SPK-ID: 2074808
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1096784847385787 3.0534e-08  
a 2.355577864176641 8.3167e-09 au
q 2.097221653350009 7.3697e-08 au
i 4.578693188917922 4.4132e-06 deg
node 183.4161330229577 4.2178e-05 deg
peri 118.0462709380773 4.6989e-05 deg
M 324.2171898100724 2.0254e-05 deg
tp 2459131.755214971248
(2020-Oct-09.25521497)
7.4335e-05 TDB
period 1320.518906671843
3.62
6.9934e-06
1.915e-08
d
yr
n .2726201027347064 1.4438e-09 deg/d
Q 2.613934075003272 9.2289e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1414  
   data-arc span      8197 days (22.44 yr)  
   first obs. used      1998-03-03  
   last obs. used      2020-08-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47986  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:42:15  

Additional Information
 Earth MOID = 1.08667 au 
 Jupiter MOID = 2.56912 au 
 T_jup = 3.542 
[ 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 15.1   n/a MPO385287  

74808 (1999 TW1)          Discovered 1999-Oct-01 by Korlevic, K. at Visnjan
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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