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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 
[ 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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1908-Dec-26 19:41 00:03 Jupiter 1.97213605744249 1.97213566269587 1.97213645220055 1.21320009175105 0.782856646138063 2418302.320064891 2.62732308289725 628.732426297874 277.399635812693 22.4986037194275 1290776.01413135 T 25 CATAB v2.0g-lin.ifort 2021-Aug-25 03:13:28 2021-Aug-25 03:13
2027-Sep-29 14:52 < 00:01 Jupiter 1.97891106905183 1.97891053867401 1.97891159945136 1.23653787061882 0.820351640614056 2461678.119405908 0.421241800140839 652.205198461138 292.772333411456 35.6638802626618 1361251.61880121 T 25 CATAB v2.0g-lin.ifort 2021-Aug-25 03:13:28 2021-Aug-25 03:13
2133-Dec-18 06:11 00:03 Jupiter 1.99925174882991 1.99925096977735 1.99925252788213 1.24237791149844 0.834364040724865 2500473.757735557 3.05818240214614 450.041598593392 238.609971718684 14.5126619086523 1220128.82479912 T 25 CATAB v2.0g-lin.ifort 2021-Aug-25 03:13:28 2021-Aug-25 03:13
2146-Jul-04 07:37 00:03 Jupiter 1.9883209953811 1.98831993505069 1.98832205579741 1.25218844296047 0.846154916490975 2505054.817659045 3.37891648527711 924.45724497358 403.307957622297 63.7600809911475 1224860.14714541 T 25 CATAB v2.0g-lin.ifort 2021-Aug-25 03:13:28 2021-Aug-25 03:13

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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