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74878 (1999 TK104)
Classification: Main-belt Asteroid          SPK-ID: 2074878
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .205565866368093 5.6032e-08  
a 2.417713175075002 1.3123e-08 au
q 1.920713871611156 1.3519e-07 au
i 5.64696876784398 5.3427e-06 deg
node 357.2075812279647 3.8144e-05 deg
peri 349.2810454023585 3.9368e-05 deg
M 203.2538558534896 1.2574e-05 deg
tp 2459598.360633651365
(2022-Jan-18.86063365)
5.063e-05 TDB
period 1373.110830167001
3.76
1.118e-05
3.061e-08
d
yr
n .2621783996534466 2.1347e-09 deg/d
Q 2.914712478538847 1.5821e-08 au
  Orbit Determination Parameters
   # obs. used (total)      738  
   data-arc span      8500 days (23.27 yr)  
   first obs. used      1997-01-09  
   last obs. used      2020-04-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56816  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:08:59  

Additional Information
 Earth MOID = .914242 au 
 Jupiter MOID = 2.50417 au 
 T_jup = 3.480 
[ 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 15.6   n/a MPO263910  
diameter diameter 2.156 km 0.646 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.219   0.174 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74878 (1999 TK104)          Discovered 1999-Oct-03 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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