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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1620424280024098 1.2801e-08  
a 2.205523867652899 4.0434e-09 au
q 1.848135425121157 2.8826e-08 au
i 2.501507078621026 5.4241e-07 deg
node 294.3629500504378 1.7476e-05 deg
peri .7606743256261641 1.7611e-05 deg
M 91.76551636246548 6.4746e-06 deg
tp 2458895.539857582982
(2020-Feb-16.03985758)
2.1298e-05 TDB
period 1196.371530635574
3.28
3.2899e-06
9.007e-09
d
yr
n .3009098685328541 8.2748e-10 deg/d
Q 2.56291231018464 4.6986e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3477  
   data-arc span      33801 days (92.54 yr)  
   first obs. used      1928-08-17  
   last obs. used      2021-03-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40436  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 12:43:53  

Additional Information
 Earth MOID = .830149 au 
 Jupiter MOID = 2.618 au 
 T_jup = 3.643 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456935.5 (2014-Oct-05.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .162494055201538 1.2841e-08  
q 1.847095601522025 2.8938e-08 au
tp 2456501.674382783172
(2013-Jul-28.17438278)
2.0627e-05 TDB
node 294.4390830381186 1.745e-05 deg
peri .565879940059984 1.7583e-05 deg
i 2.503693266683025 5.4244e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3477  
   data-arc span      33801 days (92.54 yr)  
   first obs. used      1928-08-17  
   last obs. used      2021-03-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40436  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 12:43:53  

Additional Information
 Jupiter MOID = 2.618 au 
 T_jup = 3.643 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.64886169585545E-16 -3.6905529685891E-16 -1.796858922944744E-13 -2.191074593769086E-15 -3.962849282944189E-14 -2.976576152799666E-16
q -3.6905529685891E-16 8.374173797102911E-16 3.918341649309079E-13 5.092162615776344E-15 8.751461102836377E-14 6.462818972560499E-16
tp -1.796858922944744E-13 3.918341649309079E-13 4.254530924667001E-10 3.111590492513979E-11 7.319404095236105E-11 6.238898165068121E-13
node -2.191074593769086E-15 5.092162615776344E-15 3.111590492513979E-11 3.045096525949778E-10 -2.936609667316769E-10 7.604269438125527E-12
peri -3.962849282944189E-14 8.751461102836377E-14 7.319404095236105E-11 -2.936609667316769E-10 3.091612221754561E-10 -7.370833039476211E-12
i -2.976576152799666E-16 6.462818972560499E-16 6.238898165068121E-13 7.604269438125527E-12 -7.370833039476211E-12 2.942460211849953E-13

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. 2020-October); 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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