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74853 (1999 TW73)
Classification: Main-belt Asteroid          SPK-ID: 2074853
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1486996398854977 4.1869e-08  
a 2.401108525212971 9.7079e-09 au
q 2.044064552187804 9.9497e-08 au
i 2.159768996794153 5.3313e-06 deg
node 221.6738692420927 0.00010644 deg
peri 209.4218512395291 0.00010814 deg
M 142.7632956315267 1.7156e-05 deg
tp 2458461.572710243154
(2018-Dec-09.07271024)
6.4491e-05 TDB
period 1358.989531967768
3.72
8.2418e-06
2.256e-08
d
yr
n .2649027027299709 1.6065e-09 deg/d
Q 2.758152498238138 1.1151e-08 au
  Orbit Determination Parameters
   # obs. used (total)      473  
   data-arc span      9492 days (25.99 yr)  
   first obs. used      1994-05-02  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55166  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:08:58  

Additional Information
 Earth MOID = 1.05887 au 
 Jupiter MOID = 2.50608 au 
 T_jup = 3.510 
[ 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 16.9   n/a MPO412637  

74853 (1999 TW73)          Discovered 1999-Oct-10 by Spacewatch at Kitt Peak
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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