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732 Tjilaki (A912 HK)
Classification: Main-belt Asteroid          SPK-ID: 2000732
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04362437127884023 3.4722e-08  
a 2.45613229504751 6.8643e-09 au
q 2.348985067898407 8.4763e-08 au
i 10.99405119548044 3.836e-06 deg
node 173.3457974295588 1.8276e-05 deg
peri 64.90028486855508 4.8828e-05 deg
M 359.8028033315001 4.3551e-05 deg
tp 2459001.270146122207
(2020-May-31.77014612)
0.00017009 TDB
period 1405.970020201046
3.85
5.8941e-06
1.614e-08
d
yr
n .2560509789166927 1.0734e-09 deg/d
Q 2.563279522196612 7.1638e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3051  
   data-arc span      39009 days (106.80 yr)  
   first obs. used      1913-08-28  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40534  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:19:38  

Additional Information
 Earth MOID = 1.36243 au 
 Jupiter MOID = 2.42802 au 
 T_jup = 3.466 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456416.5 (2013-May-04.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04453807449247053 3.4697e-08  
q 2.346980737281797 8.4829e-08 au
tp 2456187.789302019682
(2012-Sep-17.28930202)
0.0001702 TDB
node 173.3860356882124 1.8292e-05 deg
peri 64.57571378585558 4.7919e-05 deg
i 10.98809056687258 3.834e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      3051  
   data-arc span      39009 days (106.80 yr)  
   first obs. used      1913-08-28  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40534  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:19:38  

Additional Information
 Jupiter MOID = 2.42802 au 
 T_jup = 3.466 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.203857086127688E-15 -2.934483058640593E-15 -1.144800059176643E-12 3.133776232555147E-15 -2.915029093040198E-13 -2.148148029298341E-15
q -2.934483058640593E-15 7.195985048392922E-15 2.396349293187979E-12 -7.843809272342947E-15 6.09290331144422E-13 5.346066751979133E-15
tp -1.144800059176643E-12 2.396349293187979E-12 2.8968423893321E-8 8.244109664284433E-12 7.549909965892598E-9 3.046835509020336E-12
node 3.133776232555147E-15 -7.843809272342947E-15 8.244109664284433E-12 3.346102969413018E-10 -3.258972120831046E-10 1.438620718998988E-11
peri -2.915029093040198E-13 6.09290331144422E-13 7.549909965892598E-9 -3.258972120831046E-10 2.296248972792421E-9 -1.333123175173619E-11
i -2.148148029298341E-15 5.346066751979133E-15 3.046835509020336E-12 1.438620718998988E-11 -1.333123175173619E-11 1.469988603898913E-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 10.5   n/a MPO365251  
diameter diameter 29.791 km 0.431 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 12.34 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Florczak, M.; Dotto, E.; Barucci, M.A.; Birlan, M.; et al. (1997) Planet. Space Sci. 45, 1423-1435.]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.138   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

732 Tjilaki (A912 HK)          Discovered 1912-Apr-15 by Massinger, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A912 HK = 1958 FC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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