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226257 (2002 YZ31)
Classification: Main-belt Asteroid          SPK-ID: 2226257
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2352431289958537 5.2557e-08  
a 2.34136813203938 1.0926e-08 au
q 1.790577366527259 1.21e-07 au
i 2.876962484817313 6.3436e-06 deg
node 326.1691120585659 0.00011473 deg
peri 87.9161603252454 0.00011601 deg
M 350.5296064543916 1.2903e-05 deg
tp 2459034.924568653587
(2020-Jul-04.42456865)
4.6896e-05 TDB
period 1308.588144263329
3.58
9.1594e-06
2.508e-08
d
yr
n .2751056561059266 1.9256e-09 deg/d
Q 2.8921588975515 1.3496e-08 au
  Orbit Determination Parameters
   # obs. used (total)      440  
   data-arc span      7122 days (19.50 yr)  
   first obs. used      1998-09-26  
   last obs. used      2018-03-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6048  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Apr-05 16:05:42  

Additional Information
 Earth MOID = .804746 au 
 Jupiter MOID = 2.48573 au 
 T_jup = 3.525 
[ 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 16.5   n/a MPO433482  

226257 (2002 YZ31)          Discovered 2002-Dec-31 by LINEAR at Socorro
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ 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
1993-Jan-16 21:44 00:02 Amphi 0.0471368888195217 0.0471339560782953 0.0471398216363537 2.53765903074564 2.53765898268618 2449004.405611795 2.33457606952139 179.186463292014 62.2750359155204 -38.17965918793 76426.2069618961 T 14 CATAB v2.0e-lin.ifort 2018-Apr-05 16:05:53 2018-Dec-17 22:36

Alternate Designations
 2002 YZ31 = 1998 SF108 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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