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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 ]

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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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .162042427503982 1.2795e-08  
a 2.205523867412134 4.0418e-09 au
q 1.848135426018702 2.881e-08 au
i 2.501507080851996 5.4235e-07 deg
node 294.3629504359828 1.7474e-05 deg
peri .7606736374020272 1.7609e-05 deg
M 91.76551666107427 6.4725e-06 deg
tp 2458895.539856640565
(2020-Feb-16.03985664)
2.1292e-05 TDB
period 1196.371530439673
3.28
3.2887e-06
9.004e-09
d
yr
n .3009098685821269 8.2717e-10 deg/d
Q 2.562912308805567 4.6968e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3502  
   data-arc span      33818 days (92.59 yr)  
   first obs. used      1928-08-17  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40386  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 19:31:32  

Additional Information
 Earth MOID = .830149 au 
 Jupiter MOID = 2.618 au 
 T_jup = 3.643 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456944.5 (2014-Oct-14.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1624830968409529 1.2834e-08  
q 1.847139920345239 2.892e-08 au
tp 2456501.673825661990
(2013-Jul-28.17382566)
2.0625e-05 TDB
node 294.4391898011605 1.7448e-05 deg
peri .5680445141279878 1.7581e-05 deg
i 2.503686711548973 5.4239e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3502  
   data-arc span      33818 days (92.59 yr)  
   first obs. used      1928-08-17  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40386  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 19:31:32  

Additional Information
 Jupiter MOID = 2.618 au 
 T_jup = 3.643 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.647113361161865E-16 -3.686278202999737E-16 -1.795513379682048E-13 -2.203557211246798E-15 -3.95833527101032E-14 -2.979077804782463E-16
q -3.686278202999737E-16 8.363747721559067E-16 3.915043928762657E-13 5.126430447155731E-15 8.740120673284886E-14 6.469794442349087E-16
tp -1.795513379682048E-13 3.915043928762657E-13 4.254096478621118E-10 3.112581270932354E-11 7.31737959783114E-11 6.240735673718369E-13
node -2.203557211246798E-15 5.126430447155731E-15 3.112581270932354E-11 3.044409523825171E-10 -2.935902853031493E-10 7.602363495571303E-12
peri -3.95833527101032E-14 8.740120673284886E-14 7.31737959783114E-11 -2.935902853031493E-10 3.090862310571035E-10 -7.368895913820645E-12
i -2.979077804782463E-16 6.469794442349087E-16 6.240735673718369E-13 7.602363495571303E-12 -7.368895913820645E-12 2.94191669412138E-13

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

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

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 ]
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