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70490 (1999 TT55)
Classification: Main-belt Asteroid          SPK-ID: 2070490
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 .130275606027541 4.6409e-08  
a 2.659965905979134 1.6275e-08 au
q 2.313437235565105 1.1884e-07 au
i 14.23137396126762 5.7019e-06 deg
node 24.02370838748623 1.5689e-05 deg
peri 210.2305595143482 2.6059e-05 deg
M 58.37532409976218 1.845e-05 deg
tp 2458743.555493976364
(2019-Sep-17.05549398)
8.1518e-05 TDB
period 1584.574023271005
4.34
1.4543e-05
3.982e-08
d
yr
n .2271903961020761 2.0851e-09 deg/d
Q 3.006494576393162 1.8396e-08 au
  Orbit Determination Parameters
   # obs. used (total)      755  
   data-arc span      10077 days (27.59 yr)  
   first obs. used      1993-03-17  
   last obs. used      2020-10-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5358  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:00:25  

Additional Information
 Earth MOID = 1.31451 au 
 Jupiter MOID = 2.00489 au 
 T_jup = 3.330 
[ 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 15.0   n/a MPO474583  
diameter diameter 2.572 km 0.470 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.352   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

70490 (1999 TT55)          Discovered 1999-Oct-06 by Spacewatch at Kitt Peak
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TT55 = 1993 FF14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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