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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09623455612537447 3.6257e-08  
a 2.746863578202769 1.4054e-08 au
q 2.482520381017468 9.921e-08 au
i 7.928708857528891 3.946e-06 deg
node 233.6964575217403 3.0885e-05 deg
peri 237.8532540748671 3.8369e-05 deg
M 189.8767255871088 2.3015e-05 deg
tp 2459386.305918665742
(2021-Jun-20.80591867)		 0.00010824 TDB
period 1662.853784680215
4.55		 1.2762e-05
3.494e-08		 d
yr
n .2164952825778557 1.6615e-09 deg/d
Q 3.011206775388071 1.5407e-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 = 1.51013 au 
 Jupiter MOID = 2.15585 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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