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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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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2363487511195249 4.3647e-08  
a 3.138132699547033 1.6314e-08 au
q 2.396438955161749 1.3697e-07 au
i 10.87047461881123 4.7254e-06 deg
node 163.2131932185164 2.4583e-05 deg
peri 234.7620307446983 2.6164e-05 deg
M 36.85229681290621 8.5697e-06 deg
tp 2458392.641665604071
(2018-Oct-01.14166560)
4.798e-05 TDB
period 2030.5111717305
5.56
1.5834e-05
4.335e-08
d
yr
n .1772952569835854 1.3825e-09 deg/d
Q 3.879826443932318 2.017e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1561  
   data-arc span      10408 days (28.50 yr)  
   first obs. used      1990-10-09  
   last obs. used      2019-04-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50107  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 01:05:14  

Additional Information
 Earth MOID = 1.42145 au 
 Jupiter MOID = 1.66745 au 
 T_jup = 3.140 
[ 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 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

[ show close-approach data ]
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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