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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1545225310909887 5.3901e-08  
a 2.345607487237055 1.1317e-08 au
q 1.983158281363211 1.249e-07 au
i 5.675648026560991 5.753e-06 deg
node 223.6661114220733 4.6939e-05 deg
peri 317.2300323089854 4.9421e-05 deg
M 216.8410826994728 1.4222e-05 deg
tp 2459122.291908512238
(2020-Sep-29.79190851)
5.2688e-05 TDB
period 1312.143809177258
3.59
9.4964e-06
2.6e-08
d
yr
n .2743601711048178 1.9856e-09 deg/d
Q 2.708056693110899 1.3066e-08 au
  Orbit Determination Parameters
   # obs. used (total)      575  
   data-arc span      13740 days (37.62 yr)  
   first obs. used      1981-02-02  
   last obs. used      2018-09-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61666  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-03 19:01:56  

Additional Information
 Earth MOID = .99024 au 
 Jupiter MOID = 2.27164 au 
 T_jup = 3.539 
[ 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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