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JPL Small-Body Database Browser
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226251 (2002 YS1)
Classification: Main-belt Asteroid          SPK-ID: 2226251
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1871636533041542 4.1795e-08  
a 2.350435537988385 1.3061e-08 au
q 1.910519435842563 9.9081e-08 au
i 6.340711121728135 4.643e-06 deg
node 79.3848594526294 4.7828e-05 deg
peri 38.91893951948328 5.0459e-05 deg
M 294.1689768605465 1.9332e-05 deg
tp 2459241.185012980919
(2021-Jan-26.68501298)
7.2152e-05 TDB
period 1316.197144461549
3.60
1.0971e-05
3.004e-08
d
yr
n .2735152568252036 2.2798e-09 deg/d
Q 2.790351640134206 1.5505e-08 au
  Orbit Determination Parameters
   # obs. used (total)      392  
   data-arc span      7591 days (20.78 yr)  
   first obs. used      1998-11-11  
   last obs. used      2019-08-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59248  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:09:18  

Additional Information
 Earth MOID = .931506 au 
 Jupiter MOID = 2.31679 au 
 T_jup = 3.526 
[ 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 16.4   n/a MPO450049  
diameter diameter 2.996 km 0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.058   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

226251 (2002 YS1)          Discovered 2002-Dec-27 by LONEOS at Anderson Mesa
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

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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
1928-Nov-16 07:50 < 00:01 Eunom 0.0475728460853583 0.0475685999606054 0.0475770941723512 6.68537057909162 6.68537053495397 2425566.826478462 0.50604113276146 539.94971625027 51.8204585384929 67.5484144860992 126976.56263401 T 15 CATAB v2.0f-lin.ifort 2019-Sep-24 04:09:20 2019-Sep-24 04:09
2040-Aug-23 00:11 < 00:01 Eunom 0.0317942997671878 0.0317910652794766 0.0317975345343468 6.87993301121824 6.87993294704405 2466389.507304533 0.435101113419093 224.453261163598 49.534275450549 -45.4981556500684 70050.6350215335 T 15 CATAB v2.0f-lin.ifort 2019-Sep-24 04:09:20 2019-Sep-24 04:09
2152-May-31 13:51 < 00:01 Eunom 0.0463821228088536 0.0463660038310902 0.0463982418255287 7.05436604754924 7.05436600464647 2507213.077335185 0.432334667019856 806.355371470244 53.8739113984792 -4.79925664306497 13764.5972919185 T 15 CATAB v2.0f-lin.ifort 2019-Sep-24 04:09:20 2019-Sep-24 04:09
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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