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35027 (1981 ET18)
Classification: Main-belt Asteroid          SPK-ID: 2035027
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1731984171028051 4.9809e-08  
a 2.616381848889502 1.1419e-08 au
q 2.16322865412533 1.2847e-07 au
i 4.040837867429312 7.3481e-06 deg
node 341.4714089910698 6.8069e-05 deg
peri 139.0202533530186 7.1896e-05 deg
M 136.1244917382449 2.1482e-05 deg
tp 2458416.000843664880
(2018-Oct-24.50084367)
9.0846e-05 TDB
period 1545.788664432712
4.23
1.0119e-05
2.77e-08
d
yr
n .2328908267237917 1.5246e-09 deg/d
Q 3.069535043653675 1.3396e-08 au
  Orbit Determination Parameters
   # obs. used (total)      740  
   data-arc span      14423 days (39.49 yr)  
   first obs. used      1979-10-18  
   last obs. used      2019-04-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56305  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 03:40:48  

Additional Information
 Earth MOID = 1.18099 au 
 Jupiter MOID = 2.01227 au 
 T_jup = 3.382 
[ 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 15.6   n/a MPO468167  
diameter diameter 1.994 km 0.447 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.307   0.121 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

35027 (1981 ET18)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20020227/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1981 ET18 = 1998 FR53 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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