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27682 (1981 EC17)
Classification: Main-belt Asteroid          SPK-ID: 2027682
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06434144408113554 3.5604e-08  
a 2.182058253135612 1.1046e-08 au
q 2.041661474059707 7.6732e-08 au
i 3.757787808537992 6.3857e-06 deg
node 318.8273291426092 5.599e-05 deg
peri 245.2071662530209 7.6353e-05 deg
M 277.244569739475 5.3375e-05 deg
tp 2458871.139970765789
(2020-Jan-22.63997077)
0.00017486 TDB
period 1177.329260073451
3.22
8.94e-06
2.448e-08
d
yr
n .3057768223458069 2.3219e-09 deg/d
Q 2.322455032211517 1.1757e-08 au
  Orbit Determination Parameters
   # obs. used (total)      479  
   data-arc span      13836 days (37.88 yr)  
   first obs. used      1981-02-12  
   last obs. used      2018-12-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55489  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 01:04:54  

Additional Information
 Earth MOID = 1.04148 au 
 Jupiter MOID = 2.64847 au 
 T_jup = 3.674 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.3   n/a MPO302228  
diameter diameter 1.782 km 0.233 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.243   0.074 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

27682 (1981 EC17)          Discovered 1981-Mar-06 by Bus, S. J. at Siding Spring
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 EC17 = 2000 AO56 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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