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37541 (1981 EW7)
Classification: Main-belt Asteroid          SPK-ID: 2037541
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1307941046630542 4.1583e-08  
a 2.624930724631492 1.6211e-08 au
q 2.281605260700774 1.1092e-07 au
i 11.60236766346667 5.6535e-06 deg
node 193.2537539124785 2.1896e-05 deg
peri 40.03767719211515 3.1015e-05 deg
M 36.76112744054973 2.295e-05 deg
tp 2458841.878695205647
(2019-Dec-24.37869521)
9.8596e-05 TDB
period 1553.371011765493
4.25
1.439e-05
3.94e-08
d
yr
n .2317540351102856 2.1469e-09 deg/d
Q 2.968256188562211 1.8331e-08 au
  Orbit Determination Parameters
   # obs. used (total)      737  
   data-arc span      13965 days (38.23 yr)  
   first obs. used      1981-02-02  
   last obs. used      2019-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57622  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 04:33:44  

Additional Information
 Earth MOID = 1.28511 au 
 Jupiter MOID = 2.03503 au 
 T_jup = 3.362 
[ 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 15.1   n/a MPO436030  
diameter diameter 5.624 km 0.758 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.056   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

37541 (1981 EW7)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1981 EW7 = 1998 FW129 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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