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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1326559294918075 7.2206e-08  
a 2.22110775153199 2.2191e-08 au
q 1.926464638251055 1.6914e-07 au
i 5.458004428143954 6.531e-06 deg
node 312.2172437300684 6.2415e-05 deg
peri 274.3249362250605 6.736e-05 deg
M 61.00894671452553 2.7294e-05 deg
tp 2458795.599086322711
(2019-Nov-08.09908632)
9.0473e-05 TDB
period 1209.073962036812
3.31
1.812e-05
4.961e-08
d
yr
n .2977485342530594 4.4622e-09 deg/d
Q 2.515750864812925 2.5135e-08 au
  Orbit Determination Parameters
   # obs. used (total)      233  
   data-arc span      4813 days (13.18 yr)  
   first obs. used      2006-01-06  
   last obs. used      2019-03-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55845  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:22:18  

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

[ hide close-approach data ]
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 12 CATAB v2.0f-lin.ifort 2020-Feb-25 10:22:21 2020-Feb-25 10:22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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