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74970 (1999 TF217)
Classification: Main-belt Asteroid          SPK-ID: 2074970
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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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 .0992343811575877 4.0628e-08  
a 2.208841350811168 8.5225e-09 au
q 1.989648346288132 9.1007e-08 au
i 6.120567129117342 3.685e-06 deg
node 51.88088356355424 4.2768e-05 deg
peri 112.3691571665732 4.6892e-05 deg
M 335.1092864062988 1.9664e-05 deg
tp 2459083.404873246506
(2020-Aug-21.90487325)
6.5654e-05 TDB
period 1199.07186495027
3.28
6.9397e-06
1.9e-08
d
yr
n .3002322133669032 1.7376e-09 deg/d
Q 2.428034355334205 9.3682e-09 au
  Orbit Determination Parameters
   # obs. used (total)      956  
   data-arc span      7420 days (20.31 yr)  
   first obs. used      1999-10-09  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50742  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:25:02  

Additional Information
 Earth MOID = 1.00562 au 
 Jupiter MOID = 2.55093 au 
 T_jup = 3.645 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.7   n/a MPO319944  
diameter diameter 2.166 km 0.349 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.261   0.127 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74970 (1999 TF217)          Discovered 1999-Oct-15 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 TF217 = 2001 FJ167 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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