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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09312632975512612 4.4868e-08  
a 2.993403725481033 2.3093e-08 au
q 2.714639023051663 1.4414e-07 au
i 11.0184562475684 4.5642e-06 deg
node 96.41719493478456 2.2271e-05 deg
peri 260.0613833630928 3.3238e-05 deg
M 342.1963211061615 2.5504e-05 deg
tp 2459294.052117318478
(2021-Mar-20.55211732)
0.00013437 TDB
period 1891.674323912216
5.18
2.1891e-05
5.993e-08
d
yr
n .1903075997011344 2.2022e-09 deg/d
Q 3.272168427910402 2.5244e-08 au
  Orbit Determination Parameters
   # obs. used (total)      606  
   data-arc span      7280 days (19.93 yr)  
   first obs. used      2000-10-05  
   last obs. used      2020-09-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53966  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 19:02:45  

Additional Information
 Earth MOID = 1.73542 au 
 Jupiter MOID = 2.14557 au 
 T_jup = 3.221 
[ 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 15.05   n/a MPCxxxxx  
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

[ 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
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 20 CATAB v2.0f-lin.ifort 2021-Apr-13 19:02:47 2021-Apr-13 19:02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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