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27738 (1990 TT4)
Classification: Main-belt Asteroid          SPK-ID: 2027738
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2365032599643917 4.1344e-08  
a 3.137134634376345 1.557e-08 au
q 2.39519206639914 1.2836e-07 au
i 10.87298643058277 4.6465e-06 deg
node 163.2066319026378 2.1352e-05 deg
peri 234.6814775599407 2.3102e-05 deg
M 107.8560842538914 8.6926e-06 deg
tp 2458392.448574019143
(2018-Sep-30.94857402)
4.7696e-05 TDB
period 2029.542560045339
5.56
1.511e-05
4.137e-08
d
yr
n .1773798722368048 1.3206e-09 deg/d
Q 3.879077202353551 1.9253e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1786  
   data-arc span      10791 days (29.54 yr)  
   first obs. used      1990-10-09  
   last obs. used      2020-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49028  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 06:22:20  

Additional Information
 Earth MOID = 1.42078 au 
 Jupiter MOID = 1.67062 au 
 T_jup = 3.140 
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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 13.2   n/a MPO459052  
diameter diameter 14.529 km 0.150 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.048   0.002 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27738 (1990 TT4)          Discovered 1990-Oct-09 by McNaught, R. H. at Siding Spring
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1990 TT4 = 1990 TY15 = 1998 DR34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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