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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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3412959907461223 6.7867e-08  
a 2.554446825878438 1.8612e-08 au
q 1.682624365631969 1.8226e-07 au
i 5.736702946492196 5.2216e-06 deg
node 154.0678206476288 4.4075e-05 deg
peri 185.5231477132511 4.5343e-05 deg
M 347.8405799862264 6.2728e-06 deg
tp 2459446.867928100950
(2021-Aug-20.36792810)
2.5766e-05 TDB
period 1491.226892055913
4.08
1.6298e-05
4.462e-08
d
yr
n .2414119554293164 2.6385e-09 deg/d
Q 3.426269286124906 2.4965e-08 au
  Orbit Determination Parameters
   # obs. used (total)      714  
   data-arc span      14979 days (41.01 yr)  
   first obs. used      1980-08-04  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52203  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 03:13:27  

Additional Information
 Earth MOID = .673201 au 
 Jupiter MOID = 1.9846 au 
 T_jup = 3.348 
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Orbital Elements at Epoch 2457691.5 (2016-Oct-30.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3402694490359065 6.7972e-08  
q 1.685365205710038 1.8229e-07 au
tp 2457956.314156712233
(2017-Jul-21.81415671)
3.5455e-05 TDB
node 154.0813257460223 4.4096e-05 deg
peri 185.5936374015605 4.5366e-05 deg
i 5.734136626296898 5.2191e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      714  
   data-arc span      14979 days (41.01 yr)  
   first obs. used      1980-08-04  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52203  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 03:13:27  

Additional Information
 Jupiter MOID = 1.9846 au 
 T_jup = 3.348 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.620208453773909E-15 -1.237659106830787E-14 1.940188653622251E-12 -1.343010654481411E-13 6.222914250702593E-13 -2.900075088001725E-14
q -1.237659106830787E-14 3.323002255515197E-14 -5.272662357842528E-12 3.573239309096592E-13 -1.688706335202319E-12 7.820111087735579E-14
tp 1.940188653622251E-12 -5.272662357842528E-12 1.257041084571129E-9 -6.109053926809205E-11 4.043952561200141E-10 -1.477931538996873E-11
node -1.343010654481411E-13 3.573239309096592E-13 -6.109053926809205E-11 1.944497308725139E-9 -1.949199791599469E-9 1.134821254961339E-10
peri 6.222914250702593E-13 -1.688706335202319E-12 4.043952561200141E-10 -1.949199791599469E-9 2.058057670620174E-9 -1.167227844577308E-10
i -2.900075088001725E-14 7.820111087735579E-14 -1.477931538996873E-11 1.134821254961339E-10 -1.167227844577308E-10 2.723925053185989E-11

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

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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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