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18588 (1997 YO9)
Classification: Main-belt Asteroid          SPK-ID: 2018588
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08838988867609211 3.8662e-08  
a 2.439203700825774 8.3262e-09 au
q 2.223602757251472 9.6432e-08 au
i 6.433528773105248 4.3847e-06 deg
node 177.6591943071246 2.9039e-05 deg
peri 28.161981731595 3.5337e-05 deg
M 286.83548682406 2.1435e-05 deg
tp 2459483.292911194150
(2021-Sep-25.79291119)
8.341e-05 TDB
period 1391.45937847055
3.81
7.1246e-06
1.951e-08
d
yr
n .2587211711460101 1.3247e-09 deg/d
Q 2.654804644400076 9.0621e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1752  
   data-arc span      9392 days (25.71 yr)  
   first obs. used      1995-07-03  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50015  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:45:14  

Additional Information
 Earth MOID = 1.2215 au 
 Jupiter MOID = 2.3028 au 
 T_jup = 3.489 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457082.5 (2015-Mar-01.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08831343702921138 3.8674e-08  
q 2.223678407783471 9.6422e-08 au
tp 2456702.706202205858
(2014-Feb-14.20620221)
7.9218e-05 TDB
node 177.694756164195 2.9022e-05 deg
peri 28.61335129505807 3.5357e-05 deg
i 6.435028716922979 4.3864e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1752  
   data-arc span      9392 days (25.71 yr)  
   first obs. used      1995-07-03  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50015  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:45:14  

Additional Information
 Jupiter MOID = 2.3028 au 
 T_jup = 3.489 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.495645053601884E-15 -3.71814128202894E-15 -8.187651342831617E-13 -6.654726709096485E-15 -1.921615076186618E-13 -2.563185165887268E-15
q -3.71814128202894E-15 9.297231509545332E-15 2.135268515656697E-12 1.728553619003992E-14 5.058132285836952E-13 6.613584318726107E-15
tp -8.187651342831617E-13 2.135268515656697E-12 6.275494491016127E-9 2.296726955489461E-11 1.607554000879109E-9 2.693086541203407E-12
node -6.654726709096485E-15 1.728553619003992E-14 2.296726955489461E-11 8.422479821213366E-10 -8.306300262496002E-10 8.13092340026723E-12
peri -1.921615076186618E-13 5.058132285836952E-13 1.607554000879109E-9 -8.306300262496002E-10 1.250119790842383E-9 -7.382775372874018E-12
i -2.563185165887268E-15 6.613584318726107E-15 2.693086541203407E-12 8.13092340026723E-12 -7.382775372874018E-12 1.924059411142541E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.44   n/a MPCxxxxx  
diameter diameter 2.513 km 0.382 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.369   0.107 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18588 (1997 YO9)          Discovered 1997-Dec-25 by JPL/GEODSS NEAT at Haleakala
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 YO9 = 1996 RC3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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