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1498 Lahti (1938 SK1)
Classification: Main-belt Asteroid          SPK-ID: 2001498
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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .235424494513788 4.1593e-08  
a 3.102778240033901 1.695e-08 au
q 2.372308241285539 1.286e-07 au
i 12.66316750876298 5.2467e-06 deg
node 265.1052032820755 2.2608e-05 deg
peri 96.5884958444941 2.5657e-05 deg
M 348.0748327968711 1.5253e-05 deg
tp 2459066.628170651762
(2020-Aug-05.12817065)
8.4962e-05 TDB
period 1996.294142390559
5.47
1.6358e-05
4.479e-08
d
yr
n .1803341463342173 1.4777e-09 deg/d
Q 3.833248238782263 2.0941e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1821  
   data-arc span      25566 days (70.00 yr)  
   first obs. used      1949-10-26  
   last obs. used      2019-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48212  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:56:27  

Additional Information
 Earth MOID = 1.41093 au 
 Jupiter MOID = 1.96335 au 
 T_jup = 3.141 
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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 11.8   n/a MPO265964  
diameter diameter 31.605 km 0.579 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 58. h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Ruthroff, J.C. (2011) Minor Planet Bull. 38, 86-88.]
geometric albedo albedo 0.034   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1498 Lahti (1938 SK1)          Discovered 1938-Sep-16 by Vaisala, Y. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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