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146808 (2001 YW81)
Classification: Main-belt Asteroid          SPK-ID: 2146808
[ 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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09404550685209123 4.488e-08  
a 2.995992324604511 2.3095e-08 au
q 2.714232707912105 1.4438e-07 au
i 11.0219447434484 4.6521e-06 deg
node 96.43020900163825 2.2446e-05 deg
peri 259.9611547842741 3.3514e-05 deg
M 304.3013092947075 2.5462e-05 deg
tp 2459293.556903985432
(2021-Mar-20.05690399)		 0.00013503 TDB
period 1894.128642861096
5.19		 2.1902e-05
5.996e-08		 d
yr
n .1900610084520011 2.1977e-09 deg/d
Q 3.277751941296918 2.5267e-08 au
   Orbit Determination Parameters
   # obs. used (total)      594  
   data-arc span      7280 days (19.93 yr)  
   first obs. used      2000-10-05  
   last obs. used      2020-09-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53963  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 14:23:40  

Additional Information
 Earth MOID = 1.73669 au 
 Jupiter MOID = 2.14264 au 
 T_jup = 3.220 
[ 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 15.0   n/a MPO401251  
diameter diameter 3.592 km 0.932 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.180   0.134 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

146808 (2001 YW81)          Discovered 2001-Dec-18 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

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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
2138-May-21 04:48 00:09 Juno 0.0437883011646034 0.0437629160408929 0.0438137027585665 4.92967210919128 4.92967205283143 2502088.700235927 9.43185975248092 1842.84825855423 59.9608419751251 46.6670133209686 79449.6287314803 T 19 CATAB v2.0f-lin.ifort 2020-Nov-12 14:23:41 2020-Nov-12 14:23
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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