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1540 Kevola (1938 WK)
Classification: Main-belt Asteroid          SPK-ID: 2001540
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08572959088890499 3.9851e-08  
a 2.847357117031661 1.1249e-08 au
q 2.603254356273924 1.1575e-07 au
i 11.97236709626755 3.8189e-06 deg
node 52.46300196322155 1.9356e-05 deg
peri 112.8662134159656 2.8111e-05 deg
M 161.0581689310646 2.0698e-05 deg
tp 2457815.369961608696
(2017-Mar-02.86996161)
9.9879e-05 TDB
period 1754.936217745321
4.80
1.04e-05
2.847e-08
d
yr
n .2051356604073709 1.2157e-09 deg/d
Q 3.091459877789397 1.2214e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2548  
   data-arc span      34205 days (93.65 yr)  
   first obs. used      1926-04-14  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44168  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 21:02:00  

Additional Information
 Earth MOID = 1.63573 au 
 Jupiter MOID = 1.94449 au 
 T_jup = 3.269 
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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 10.8   n/a MPO502168  
diameter diameter 43.875 km 0.318 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 20.082 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.048   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1540 Kevola (1938 WK)          Discovered 1938-Nov-16 by Oterma, L. at Turku
Nov. 16 observation seems to be a prediscovery.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1938 WK = 1926 GT = 1933 UM = 1933 WR = 1936 KL = 1937 QG = 1940 EJ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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