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74937 (1999 TO172)
Classification: Main-belt Asteroid          SPK-ID: 2074937
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1172635038697011 6.1329e-08  
a 2.289536013527728 1.2011e-08 au
q 2.021056998345599 1.4065e-07 au
i 5.309226446069499 3.9377e-06 deg
node 273.9800662795448 6.5159e-05 deg
peri 284.5436689931631 6.7327e-05 deg
M 171.3129496104162 1.7329e-05 deg
tp 2458398.346330044970
(2018-Oct-06.84633004)
5.9461e-05 TDB
period 1265.376153272598
3.46
9.9569e-06
2.726e-08
d
yr
n .2845003828062863 2.2387e-09 deg/d
Q 2.558015028709857 1.3419e-08 au
  Orbit Determination Parameters
   # obs. used (total)      573  
   data-arc span      7688 days (21.05 yr)  
   first obs. used      1999-10-10  
   last obs. used      2020-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54711  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:41:45  

Additional Information
 Earth MOID = 1.02629 au 
 Jupiter MOID = 2.43081 au 
 T_jup = 3.585 
[ 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 16.0   n/a MPO436307  

74937 (1999 TO172)          Discovered 1999-Oct-10 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TO172 = 2001 FS118 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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