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249367 (2008 YD171)
Classification: Main-belt Asteroid          SPK-ID: 2249367
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1326559660910056 4.1761e-08  
a 2.221107741217442 1.5202e-08 au
q 1.926464548014031 8.733e-08 au
i 5.45800257002553 6.3287e-06 deg
node 312.217162022165 4.2477e-05 deg
peri 274.3250174877661 4.939e-05 deg
M 61.00895266830182 2.4536e-05 deg
tp 2458795.599067754024
(2019-Nov-08.09906775)
8.2139e-05 TDB
period 1209.073953614628
3.31
1.2413e-05
3.398e-08
d
yr
n .2977485363271202 3.0568e-09 deg/d
Q 2.515750934420853 1.7219e-08 au
  Orbit Determination Parameters
   # obs. used (total)      308  
   data-arc span      5398 days (14.78 yr)  
   first obs. used      2006-01-06  
   last obs. used      2020-10-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52208  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:18:25  

Additional Information
 Earth MOID = .926207 au 
 Jupiter MOID = 2.49638 au 
 T_jup = 3.632 
[ 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 17.1   n/a MPO433634  

249367 (2008 YD171)          Discovered 2008-Dec-22 by Spacewatch at Kitt Peak
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

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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
2055-Mar-15 19:24 00:01 Eunom 0.0176212374223371 0.0175965764381797 0.0176459021512571 6.084137376195 6.08413724525918 2471707.308240249 1.38877401285847 1294.54177586416 75.6657652756297 -18.297835654925 11100.8120803897 T 13 CATAB v2.0f-lin.ifort 2020-Nov-12 00:18:26 2020-Nov-12 00:18
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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