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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2697218709584961 7.2186e-08  
a 2.533199994471025 7.5634e-09 au
q 1.849940552450248 1.8605e-07 au
i 9.69018122375738 4.2183e-06 deg
node 256.9221322998723 3.6511e-05 deg
peri 166.2841555176707 4.0085e-05 deg
M 343.9304411558341 1.5253e-05 deg
tp 2459266.236124728522
(2021-Feb-20.73612473)
6.2544e-05 TDB
period 1472.660521160454
4.03
6.5954e-06
1.806e-08
d
yr
n .2444555244248149 1.0948e-09 deg/d
Q 3.216459436491802 9.6035e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1715  
   data-arc span      11795 days (32.29 yr)  
   first obs. used      1988-12-03  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43668  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:51:21  

Additional Information
 Earth MOID = .864435 au 
 Jupiter MOID = 2.1238 au 
 T_jup = 3.379 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457794.5 (2017-Feb-10.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2710341079891851 7.3507e-08  
q 1.846621401018343 1.9022e-07 au
tp 2457788.463088113104
(2017-Feb-03.96308811)
5.8061e-05 TDB
node 256.9928268267026 3.6558e-05 deg
peri 165.4497975881092 4.003e-05 deg
i 9.684297142605283 4.2403e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1715  
   data-arc span      11795 days (32.29 yr)  
   first obs. used      1988-12-03  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43668  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:51:21  

Additional Information
 Jupiter MOID = 2.1238 au 
 T_jup = 3.379 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.403283775342988E-15 -1.397871508047715E-14 -3.339043018593717E-12 1.272924189978004E-13 -8.433345248644916E-13 -5.237286662523482E-14
q -1.397871508047715E-14 3.618474182037743E-14 8.661458215527813E-12 -3.29883125263423E-13 2.18952608651183E-12 1.359017938983339E-13
tp -3.339043018593717E-12 8.661458215527813E-12 3.371021762662512E-9 -9.540340171518382E-11 9.868526210330957E-10 4.246035077815257E-11
node 1.272924189978004E-13 -3.29883125263423E-13 -9.540340171518382E-11 1.336473048418472E-9 -1.340775053898533E-9 -9.717075896907197E-11
peri -8.433345248644916E-13 2.18952608651183E-12 9.868526210330957E-10 -1.340775053898533E-9 1.602369081635689E-9 1.062370245551718E-10
i -5.237286662523482E-14 1.359017938983339E-13 4.246035077815257E-11 -9.717075896907197E-11 1.062370245551718E-10 1.798028810647126E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.38   n/a E2021B10  
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

Alternate Designations
 1988 XQ = 1992 WY2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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