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27678 (1981 EX3)
Classification: Main-belt Asteroid          SPK-ID: 2027678
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09665631823751783 3.6281e-08  
a 2.746151586573439 1.3882e-08 au
q 2.480718684893132 9.9263e-08 au
i 7.928642693614568 3.946e-06 deg
node 233.690750215941 3.0891e-05 deg
peri 237.8498194771757 3.8298e-05 deg
M 276.5376031426969 2.3106e-05 deg
tp 2459385.866127047595
(2021-Jun-20.36612705)
0.0001077 TDB
period 1662.207304857612
4.55
1.2604e-05
3.451e-08
d
yr
n .2165794837671215 1.6423e-09 deg/d
Q 3.011584488253746 1.5224e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1057  
   data-arc span      15506 days (42.45 yr)  
   first obs. used      1977-05-18  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52124  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 05:01:22  

Additional Information
 Earth MOID = 1.50813 au 
 Jupiter MOID = 2.1543 au 
 T_jup = 3.327 
[ 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 14.5   n/a MPO395272  
diameter diameter 4.337 km 0.316 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.196   0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27678 (1981 EX3)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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