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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09677665547629803 3.2668e-08  
a 2.746740237798709 1.1276e-08 au
q 2.480919904122378 9.2501e-08 au
i 7.927929464669623 3.8441e-06 deg
node 233.6922286705637 2.3699e-05 deg
peri 237.75005605 3.16e-05 deg
M 319.9507088836749 1.9971e-05 deg
tp 2459385.476749672181
(2021-Jun-19.97674967)		 9.2353e-05 TDB
period 1662.741787078492
4.55		 1.0238e-05
2.803e-08		 d
yr
n .2165098650900783 1.3332e-09 deg/d
Q 3.012560571475039 1.2367e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1394  
   data-arc span      16005 days (43.82 yr)  
   first obs. used      1977-05-18  
   last obs. used      2021-03-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48754  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 05:42:28  

Additional Information
 Earth MOID = 1.50818 au 
 Jupiter MOID = 2.1532 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 14.56   n/a MPCxxxxx  
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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