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1496 Turku (1938 SA1)
Classification: Main-belt Asteroid          SPK-ID: 2001496
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1621596760084524 3.3533e-08  
a 2.205656961012146 5.5895e-09 au
q 1.847988342828628 7.5238e-08 au
i 2.501491758961523 3.5629e-06 deg
node 294.3627368110779 8.0189e-05 deg
peri .7601690474745975 8.0974e-05 deg
M 31.57457435240365 1.3367e-05 deg
tp 2458895.560163287592
(2020-Feb-16.06016329)
4.423e-05 TDB
period 1196.479825660457
3.28
4.5481e-06
1.245e-08
d
yr
n .3008826327692405 1.1437e-09 deg/d
Q 2.563325579195663 6.4959e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2781  
   data-arc span      33529 days (91.80 yr)  
   first obs. used      1928-08-17  
   last obs. used      2020-06-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43975  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:31:58  

Additional Information
 Earth MOID = .831973 au 
 Jupiter MOID = 2.61841 au 
 T_jup = 3.643 
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Orbital Elements at Epoch 2456096.5 (2012-Jun-18.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1628337915842231 3.3615e-08  
q 1.846161751271083 7.5434e-08 au
tp 2456501.945000886954
(2013-Jul-28.44500089)
4.0445e-05 TDB
node 294.4503363826529 8.0104e-05 deg
peri .6579510076152078 8.0885e-05 deg
i 2.503682437944894 3.5645e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2781  
   data-arc span      33529 days (91.80 yr)  
   first obs. used      1928-08-17  
   last obs. used      2020-06-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43975  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:31:58  

Additional Information
 Jupiter MOID = 2.61841 au 
 T_jup = 3.643 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.129995349632821E-15 -2.531272504793863E-15 -3.307871430639521E-13 1.071164419688639E-15 -7.119588356460921E-14 -1.872729447732278E-16
q -2.531272504793863E-15 5.690348997769132E-15 7.866090782351111E-13 -2.076642372028973E-15 1.692766726461226E-13 4.756056659380542E-16
tp -3.307871430639521E-13 7.866090782351111E-13 1.635780661561488E-9 -9.624753927936899E-13 4.629595358089769E-10 8.229402013157573E-13
node 1.071164419688639E-15 -2.076642372028973E-15 -9.624753927936899E-13 6.416728846918498E-9 -6.410454889281821E-9 -2.538856823299502E-11
peri -7.119588356460921E-14 1.692766726461226E-13 4.629595358089769E-10 -6.410454889281821E-9 6.542355963880107E-9 2.55939235475762E-11
i -1.872729447732278E-16 4.756056659380542E-16 8.229402013157573E-13 -2.538856823299502E-11 2.55939235475762E-11 1.270566508405188E-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 12.6   n/a MPO473784  
diameter diameter 7.758 km 0.072 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 6.47 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.]
geometric albedo albedo 0.203   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1496 Turku (1938 SA1)          Discovered 1938-Sep-22 by Vaisala, Y. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1938 SA1 = 1928 QN = 1928 RE = 1950 EC = 1954 MH = 1957 HB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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