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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08831044534776436 6.9363e-08  
a 3.193892625842926 3.8649e-08 au
q 2.911838545661797 2.3512e-07 au
i 22.11371651307992 7.4663e-06 deg
node 145.4927987477908 1.6385e-05 deg
peri 345.4679236629136 4.0415e-05 deg
M 343.7875457218431 3.7953e-05 deg
tp 2458694.391257989372
(2019-Jul-29.89125799)
0.00022043 TDB
period 2084.869588296311
5.71
3.7843e-05
1.036e-07
d
yr
n .1726726707612348 3.1342e-09 deg/d
Q 3.475946706024056 4.2062e-08 au
  Orbit Determination Parameters
   # obs. used (total)      320  
   data-arc span      8043 days (22.02 yr)  
   first obs. used      1997-02-04  
   last obs. used      2019-02-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58542  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:18:59  

Additional Information
 Earth MOID = 1.92936 au 
 Jupiter MOID = 1.5613 au 
 T_jup = 3.075 
[ 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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