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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08631699201331516 3.7028e-08  
a 3.187974831623622 2.3846e-08 au
q 2.912798433543716 1.2124e-07 au
i 5.024394544096508 5.1753e-06 deg
node 319.0127521458502 4.8694e-05 deg
peri 272.400852823656 5.8479e-05 deg
M 32.2210543533655 3.1133e-05 deg
tp 2459210.416442700197
(2020-Dec-26.91644270)
0.00018031 TDB
period 2079.077856771998
5.69
2.3327e-05
6.387e-08
d
yr
n .1731536887026157 1.9428e-09 deg/d
Q 3.463151229703528 2.5904e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1009  
   data-arc span      22182 days (60.73 yr)  
   first obs. used      1960-09-26  
   last obs. used      2021-06-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54557  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 08:24:40  

Additional Information
 Earth MOID = 1.90835 au 
 Jupiter MOID = 1.58104 au 
 T_jup = 3.186 
[ 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 14.23   n/a MPO636873  
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. 2020-October); 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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