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32748 (1981 EY7)
Classification: Main-belt Asteroid          SPK-ID: 2032748
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1542905872593857 5.0054e-08  
a 2.345749576210047 1.0789e-08 au
q 1.983822496533143 1.1617e-07 au
i 5.674921679977998 5.3356e-06 deg
node 223.6612312874634 4.5288e-05 deg
peri 317.2095604603892 4.7387e-05 deg
M 326.5801101219652 1.3681e-05 deg
tp 2459122.321350691601
(2020-Sep-29.82135069)
5.0138e-05 TDB
period 1312.263038837854
3.59
9.0535e-06
2.479e-08
d
yr
n .2743352432747154 1.8927e-09 deg/d
Q 2.70767665588695 1.2454e-08 au
  Orbit Determination Parameters
   # obs. used (total)      627  
   data-arc span      14232 days (38.97 yr)  
   first obs. used      1981-02-02  
   last obs. used      2020-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59701  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 02:51:54  

Additional Information
 Earth MOID = .990496 au 
 Jupiter MOID = 2.27072 au 
 T_jup = 3.538 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.0   n/a MPO351057  
diameter diameter 1.625 km 0.230 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.320   0.169 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

32748 (1981 EY7)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20020128/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1981 EY7 = 1999 GL50 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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