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19135 Takashionaka (1988 XQ)
Classification: Main-belt Asteroid          SPK-ID: 2019135
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2697076262453995 8.1225e-08  
a 2.533622136224139 9.4071e-09 au
q 1.850284924060328 2.0977e-07 au
i 9.690202212785529 4.9272e-06 deg
node 256.9258158700154 4.0562e-05 deg
peri 166.235895207201 4.4254e-05 deg
M 295.0770724862745 1.8275e-05 deg
tp 2459266.148145343874
(2021-Feb-20.64814534)
7.5699e-05 TDB
period 1473.02865083489
4.03
8.2038e-06
2.246e-08
d
yr
n .2443944317009431 1.3611e-09 deg/d
Q 3.216959348387949 1.1944e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1179  
   data-arc span      11615 days (31.80 yr)  
   first obs. used      1988-12-03  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47546  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 16:49:25  

Additional Information
 Earth MOID = .86538 au 
 Jupiter MOID = 2.12278 au 
 T_jup = 3.378 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457056.5 (2015-Feb-03.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2714226876683723 8.2757e-08  
q 1.845207542456765 2.1467e-07 au
tp 2457788.365799659485
(2017-Feb-03.86579966)
6.9099e-05 TDB
node 257.0059350378302 4.0608e-05 deg
peri 165.4833086787558 4.4183e-05 deg
i 9.686516999718039 4.9485e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1179  
   data-arc span      11615 days (31.80 yr)  
   first obs. used      1988-12-03  
   last obs. used      2020-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47546  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Oct-22 16:49:25  

Additional Information
 Jupiter MOID = 2.12278 au 
 T_jup = 3.378 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.848687832784623E-15 -1.775961021224263E-14 -4.656916918681153E-12 5.439295193665184E-14 -1.083236240545527E-12 -5.307795179783235E-14
q -1.775961021224263E-14 4.608496269497355E-14 1.21560673195206E-11 -1.406802979151302E-13 2.826159510186713E-12 1.38143006349876E-13
tp -4.656916918681153E-12 1.21560673195206E-11 4.774604523977773E-9 -4.038113916821621E-11 1.247980563684747E-9 4.52240421426138E-11
node 5.439295193665184E-14 -1.406802979151302E-13 -4.038113916821621E-11 1.648994484371092E-9 -1.635559367615615E-9 -1.058277060805244E-10
peri -1.083236240545527E-12 2.826159510186713E-12 1.247980563684747E-9 -1.635559367615615E-9 1.952127061154872E-9 1.153084719767677E-10
i -5.307795179783235E-14 1.38143006349876E-13 4.52240421426138E-11 -1.058277060805244E-10 1.153084719767677E-10 2.448721068724179E-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 14.2   n/a MPO431719  
diameter diameter 5.041 km 0.325 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.277   0.072 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19135 Takashionaka           Discovered 1988 Dec. 3 by K. Endate and K. Watanabe at Kitami.
Takashi Onaka (b. 1952) is a professor of infrared astronomy at the University of Tokyo. He is known for his comprehensive study of the interplanetary, circumstellar and interstellar dust based on ground-based/space-borne observations, theoretical approaches and laboratory experiments.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2018-09-25Last Updated: 2018-10-01

[ show close-approach data ]
Alternate Designations
 1988 XQ = 1992 WY2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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