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18585 (1997 YE2)
Classification: Main-belt Asteroid          SPK-ID: 2018585
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1063434011571447 1.7777e-08  
a 2.196092799345717 5.3747e-09 au
q 1.962552821806579 3.9214e-08 au
i 5.606610446011445 1.4587e-06 deg
node 75.32701501378416 6.194e-06 deg
peri 15.74051605938591 1.0285e-05 deg
M 29.35562685282486 1.1532e-05 deg
tp 2459103.568860848039
(2020-Sep-11.06886085)
3.8008e-05 TDB
period 1188.706010934593
3.25
4.3638e-06
1.195e-08
d
yr
n .3028503235353865 1.1118e-09 deg/d
Q 2.429632776884855 5.9462e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2086  
   data-arc span      10598 days (29.02 yr)  
   first obs. used      1992-03-05  
   last obs. used      2021-03-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46641  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:32:19  

Additional Information
 Earth MOID = .979411 au 
 Jupiter MOID = 2.71978 au 
 T_jup = 3.655 
[ 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 14.3   n/a MPO395181  
diameter diameter 3.891 km 0.659 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
geometric albedo albedo 0.263   0.109 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

18585 (1997 YE2)          Discovered 1997-Dec-21 by Kobayashi, T. at Oizumi
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 YE2 = 1999 LR25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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