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58130 (1981 ER38)
Classification: Main-belt Asteroid          SPK-ID: 2058130
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .162884049713579 3.272e-08  
a 2.664369544655097 1.1806e-08 au
q 2.23038624328815 8.2941e-08 au
i 11.52990810485593 5.1252e-06 deg
node 189.1501726198684 1.6602e-05 deg
peri 267.6878436007141 2.5807e-05 deg
M 69.50263536126512 1.6893e-05 deg
tp 2458693.817574412063
(2019-Jul-29.31757441)
7.4675e-05 TDB
period 1588.510603055321
4.35
1.0559e-05
2.891e-08
d
yr
n .226627382472349 1.5064e-09 deg/d
Q 3.098352846022044 1.373e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1010  
   data-arc span      14344 days (39.27 yr)  
   first obs. used      1981-02-12  
   last obs. used      2020-05-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52076  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 22:52:14  

Additional Information
 Earth MOID = 1.2821 au 
 Jupiter MOID = 2.19429 au 
 T_jup = 3.336 
[ 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 15.2   n/a MPO468480  
diameter diameter 4.744 km 1.264 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.050   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

58130 (1981 ER38)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 ER38 = 2001 QN144 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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