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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07606003686664028 3.4736e-08  
a 2.349115890790488 1.1546e-08 au
q 2.170442049532953 8.1207e-08 au
i 5.494645001654875 4.4964e-06 deg
node 220.7000230381006 4.4757e-05 deg
peri 246.0969359508885 5.5736e-05 deg
M 75.75310466938747 3.2198e-05 deg
tp 2458323.772049368333
(2018-Jul-24.27204937)
0.0001177 TDB
period 1315.088835793397
3.60
9.6956e-06
2.655e-08
d
yr
n .2737457654583548 2.0182e-09 deg/d
Q 2.527789732048023 1.2424e-08 au
  Orbit Determination Parameters
   # obs. used (total)      768  
   data-arc span      7149 days (19.57 yr)  
   first obs. used      1999-09-30  
   last obs. used      2019-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53608  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 09:01:23  

Additional Information
 Earth MOID = 1.19422 au 
 Jupiter MOID = 2.56958 au 
 T_jup = 3.549 
[ 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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