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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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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2354245070298862 4.0778e-08  
a 3.102778221274424 1.0936e-08 au
q 2.372308188107826 1.2394e-07 au
i 12.66317249581568 3.9308e-06 deg
node 265.1052121967992 2.0793e-05 deg
peri 96.58847493894206 2.2408e-05 deg
M 348.074851237358 7.5035e-06 deg
tp 2459066.628067794722
(2020-Aug-05.12806779)
4.165e-05 TDB
period 1996.294124286091
5.47
1.0555e-05
2.89e-08
d
yr
n .1803341479696746 9.5344e-10 deg/d
Q 3.833248254441023 1.3511e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2328  
   data-arc span      25954 days (71.06 yr)  
   first obs. used      1949-10-26  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43942  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:00:57  

Additional Information
 Earth MOID = 1.41093 au 
 Jupiter MOID = 1.96335 au 
 T_jup = 3.141 
[ show covariance matrix ]

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. 2020-October); 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

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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