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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2367183682918767 4.0895e-08  
a 3.136434387330753 1.5234e-08 au
q 2.393982756907285 1.2694e-07 au
i 10.87438889312236 4.5366e-06 deg
node 163.2088273209833 2.0446e-05 deg
peri 234.6404943641509 2.2045e-05 deg
M 143.3727626483816 8.596e-06 deg
tp 2458392.489712963814
(2018-Sep-30.98971296)
4.6421e-05 TDB
period 2028.863069664162
5.55
1.4782e-05
4.047e-08
d
yr
n .1774392788664593 1.2928e-09 deg/d
Q 3.878886017754221 1.884e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1866  
   data-arc span      11123 days (30.45 yr)  
   first obs. used      1990-10-09  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48679  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 04:06:33  

Additional Information
 Earth MOID = 1.41846 au 
 Jupiter MOID = 1.67187 au 
 T_jup = 3.141 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456807.5 (2014-May-30.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2349489258021769 4.0795e-08  
q 2.403139907006877 1.2679e-07 au
tp 2456365.045422560005
(2013-Mar-13.54542256)
4.5175e-05 TDB
node 163.2250711523825 2.046e-05 deg
peri 235.2331510165932 2.2092e-05 deg
i 10.86356703561835 4.5321e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1866  
   data-arc span      11123 days (30.45 yr)  
   first obs. used      1990-10-09  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48679  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 04:06:33  

Additional Information
 Jupiter MOID = 1.67187 au 
 T_jup = 3.141 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.664227070097604E-15 -5.150888100789916E-15 -2.219393967295666E-13 2.25396777661351E-15 -9.730654250568663E-14 -2.5236165554738E-15
q -5.150888100789916E-15 1.607542401419394E-14 6.552046546844766E-13 -7.605697967094796E-15 3.004752058251098E-13 8.06693911011414E-15
tp -2.219393967295666E-13 6.552046546844766E-13 2.040752655740666E-9 -8.403373641650754E-12 3.894660938813979E-10 -1.614761510245423E-12
node 2.25396777661351E-15 -7.605697967094796E-15 -8.403373641650754E-12 4.186049093545379E-10 -4.122513034164155E-10 1.238752076618434E-11
peri -9.730654250568663E-14 3.004752058251098E-13 3.894660938813979E-10 -4.122513034164155E-10 4.880547018046997E-10 -1.233085787225232E-11
i -2.5236165554738E-15 8.06693911011414E-15 -1.614761510245423E-12 1.238752076618434E-11 -1.233085787225232E-11 2.05399426079308E-11

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 13.25   n/a E2020-QM5  
diameter diameter 14.529 km 0.150 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 26.4684 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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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