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173169 (1997 ED27)
Classification: Main-belt Asteroid          SPK-ID: 2173169
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08794695241552504 5.8066e-08  
a 3.192540160653252 3.0829e-08 au
q 2.911765983059627 1.8702e-07 au
i 22.11750873582394 7.069e-06 deg
node 145.4933859346699 1.468e-05 deg
peri 345.3567265593818 3.8465e-05 deg
M 52.98607506156845 3.5041e-05 deg
tp 2458693.836399567834
(2019-Jul-29.33639957)		 0.00020198 TDB
period 2083.545460336497
5.70		 3.018e-05
8.263e-08		 d
yr
n .1727824071291726 2.5027e-09 deg/d
Q 3.473314338246876 3.354e-08 au
   Orbit Determination Parameters
   # obs. used (total)      450  
   data-arc span      8484 days (23.23 yr)  
   first obs. used      1997-02-04  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54404  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 03:25:01  

Additional Information
 Earth MOID = 1.92891 au 
 Jupiter MOID = 1.56253 au 
 T_jup = 3.076 
[ 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 14.6   n/a MPO280922  
diameter diameter 7.589 km 0.142 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.028   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

173169 (1997 ED27)          Discovered 1997-Mar-05 by Spacewatch at Kitt Peak
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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