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JPL Small-Body Database Browser
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39180 (2000 WA161)
Classification: Main-belt Asteroid          SPK-ID: 2039180
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1441807747910882 4.6839e-08  
a 2.611528504541041 1.5219e-08 au
q 2.234996301367302 1.2002e-07 au
i 14.66390247683478 5.0843e-06 deg
node 208.9368506094146 1.8057e-05 deg
peri 135.59406525 2.3856e-05 deg
M 288.7466745490122 1.8991e-05 deg
tp 2459305.600711093249
(2021-Apr-01.10071109)
8.2837e-05 TDB
period 1541.48954169334
4.22
1.3475e-05
3.689e-08
d
yr
n .2335403454015891 2.0415e-09 deg/d
Q 2.98806070771478 1.7413e-08 au
  Orbit Determination Parameters
   # obs. used (total)      955  
   data-arc span      7701 days (21.08 yr)  
   first obs. used      1998-03-31  
   last obs. used      2019-05-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55687  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:05:26  

Additional Information
 Earth MOID = 1.2535 au 
 Jupiter MOID = 2.55401 au 
 T_jup = 3.349 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456550.5 (2013-Sep-15.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1419870363027352 4.6602e-08  
q 2.241746326681728 1.1871e-07 au
tp 2456223.808497310056
(2012-Oct-23.30849731)
7.2154e-05 TDB
node 209.1048214858591 1.8056e-05 deg
peri 135.72665333685 2.4065e-05 deg
i 14.66021521988747 5.0824e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      955  
   data-arc span      7701 days (21.08 yr)  
   first obs. used      1998-03-31  
   last obs. used      2019-05-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55687  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:05:26  

Additional Information
 Jupiter MOID = 2.55401 au 
 T_jup = 3.349 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.171708236321148E-15 -5.499280423510797E-15 5.296315133157393E-13 7.212850029256255E-15 9.341207915229905E-14 -3.997631675316524E-15
q -5.499280423510797E-15 1.409218195608915E-14 -1.110968483962189E-12 -1.519193599065065E-14 -1.830683481535322E-13 1.00072919622782E-14
tp 5.296315133157393E-13 -1.110968483962189E-12 5.20620885314954E-9 2.589585220736552E-11 1.170682094205212E-9 -4.716472527038228E-12
node 7.212850029256255E-15 -1.519193599065065E-14 2.589585220736552E-11 3.260275422866135E-10 -3.088897914153278E-10 -1.046096152448956E-11
peri 9.341207915229905E-14 -1.830683481535322E-13 1.170682094205212E-9 -3.088897914153278E-10 5.791166312612261E-10 9.118265016977898E-12
i -3.997631675316524E-15 1.00072919622782E-14 -4.716472527038228E-12 -1.046096152448956E-11 9.118265016977898E-12 2.583124967791133E-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 14.3   n/a MPO279912  
diameter diameter 4.979 km 0.317 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.149   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39180 (2000 WA161)          Discovered 2000-Nov-20 by LONEOS at Anderson Mesa
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2000 WA161 = 1998 FM96 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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