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74968 (1999 TW212)
Classification: Main-belt Asteroid          SPK-ID: 2074968
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07568527919097841 3.3931e-08  
a 2.35072275454512 1.1486e-08 au
q 2.172807646566787 7.91e-08 au
i 5.49062104787126 4.4896e-06 deg
node 220.6589742838164 4.3629e-05 deg
peri 246.7619677163527 5.4883e-05 deg
M 184.5276824012649 3.2344e-05 deg
tp 2459642.162494252669
(2022-Mar-03.66249425)
0.00011827 TDB
period 1316.43840516885
3.60
9.6481e-06
2.642e-08
d
yr
n .2734651302989185 2.0042e-09 deg/d
Q 2.528637862523453 1.2355e-08 au
  Orbit Determination Parameters
   # obs. used (total)      782  
   data-arc span      7185 days (19.67 yr)  
   first obs. used      1999-09-30  
   last obs. used      2019-06-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53683  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:25:01  

Additional Information
 Earth MOID = 1.19646 au 
 Jupiter MOID = 2.56523 au 
 T_jup = 3.548 
[ 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 15.7   n/a MPO267936  

74968 (1999 TW212)          Discovered 1999-Oct-15 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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