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JPL Small-Body Database Browser
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58544 (1997 EK42)
Classification: Main-belt Asteroid          SPK-ID: 2058544
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08645032423663365 3.9575e-08  
a 3.189379251427019 2.8662e-08 au
q 2.913656381027562 1.2558e-07 au
i 5.023400547898069 5.4174e-06 deg
node 319.0101370429446 5.2393e-05 deg
peri 271.8874461208998 6.1815e-05 deg
M 254.8955003416074 3.3119e-05 deg
tp 2459207.902369963113
(2020-Dec-24.40236996)
0.00019109 TDB
period 2080.451873111223
5.70
2.8045e-05
7.678e-08
d
yr
n .1730393308553858 2.3326e-09 deg/d
Q 3.465102121826477 3.114e-08 au
  Orbit Determination Parameters
   # obs. used (total)      807  
   data-arc span      21312 days (58.35 yr)  
   first obs. used      1960-09-26  
   last obs. used      2019-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58455  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 03:35:14  

Additional Information
 Earth MOID = 1.90891 au 
 Jupiter MOID = 1.58126 au 
 T_jup = 3.185 
[ 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 14.2   n/a MPO302381  
diameter diameter 8.640 km 0.274 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 9.996 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.059   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

58544 (1997 EK42)          Discovered 1997-Mar-10 by LINEAR at Socorro
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 EK42 = 2001 YN67 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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