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187466 (2005 YR171)
Classification: Main-belt Asteroid          SPK-ID: 2187466
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3412959825294981 6.933e-08  
a 2.554446824312633 1.9712e-08 au
q 1.682624385589497 1.8513e-07 au
i 5.73670050728141 5.6676e-06 deg
node 154.0677864675135 5.3536e-05 deg
peri 185.5231806919667 5.4485e-05 deg
M 347.8405816783139 7.6048e-06 deg
tp 2459446.867921045510
(2021-Aug-20.36792105)
3.1429e-05 TDB
period 1491.226890684792
4.08
1.7261e-05
4.726e-08
d
yr
n .2414119556512846 2.7944e-09 deg/d
Q 3.426269263035769 2.644e-08 au
  Orbit Determination Parameters
   # obs. used (total)      642  
   data-arc span      14933 days (40.88 yr)  
   first obs. used      1980-08-04  
   last obs. used      2021-06-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54244  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 09:32:28  

Additional Information
 Earth MOID = .673201 au 
 Jupiter MOID = 1.9846 au 
 T_jup = 3.348 
[ 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 16.02   n/a E2021B55  
diameter diameter 2.181 km 0.301 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.162   0.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

187466 (2005 YR171)          Discovered 2005-Dec-22 by CSS at Catalina
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

[ show close-approach data ]
Alternate Designations
 2005 YR171 = 1980 PS4 = 2005 WD207 = 2005 WP124 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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