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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09530674569850271 4.6371e-08  
a 2.992158100935173 2.9254e-08 au
q 2.706985249719629 1.4514e-07 au
i 11.02226003869086 5.2019e-06 deg
node 96.43789432993061 2.7876e-05 deg
peri 260.7821772126187 4.1657e-05 deg
M 227.4938810593974 3.413e-05 deg
tp 2459296.338839125297
(2021-Mar-22.83883913)
0.00018516 TDB
period 1890.4936925773
5.18
2.7724e-05
7.59e-08
d
yr
n .1904264486115338 2.7926e-09 deg/d
Q 3.277330952150716 3.2042e-08 au
  Orbit Determination Parameters
   # obs. used (total)      501  
   data-arc span      6791 days (18.59 yr)  
   first obs. used      2000-10-05  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55929  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:22:26  

Additional Information
 Earth MOID = 1.7291 au 
 Jupiter MOID = 2.14801 au 
 T_jup = 3.221 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457027.5 (2015-Jan-05.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09597973401068484 4.6457e-08  
q 2.704786052476206 1.4534e-07 au
tp 2457410.285100099625
(2016-Jan-22.78510010)
0.0001689 TDB
node 96.46062958274919 2.7885e-05 deg
peri 261.5012644844949 4.1482e-05 deg
i 11.02112447140957 5.2011e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      501  
   data-arc span      6791 days (18.59 yr)  
   first obs. used      2000-10-05  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55929  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:22:26  

Additional Information
 Jupiter MOID = 2.14801 au 
 T_jup = 3.221 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.158297263552158E-15 -6.640661714131116E-15 5.355664323997297E-13 9.558032437554266E-15 1.246286166914566E-13 1.559625971271506E-15
q -6.640661714131116E-15 2.112314244769209E-14 5.293578878938965E-13 -2.656401199660546E-14 -1.334075640133831E-14 -2.919136981056729E-15
tp 5.355664323997297E-13 5.293578878938965E-13 2.852573997158951E-8 1.430665304327011E-11 5.224964179656877E-9 1.215918285604741E-11
node 9.558032437554266E-15 -2.656401199660546E-14 1.430665304327011E-11 7.775932551482304E-10 -7.600808626853579E-10 -2.904642515852501E-11
peri 1.246286166914566E-13 -1.334075640133831E-14 5.224964179656877E-9 -7.600808626853579E-10 1.720715140371036E-9 3.073815420611338E-11
i 1.559625971271506E-15 -2.919136981056729E-15 1.215918285604741E-11 -2.904642515852501E-11 3.073815420611338E-11 2.70518144823607E-11

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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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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