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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1441807313455921 4.1846e-08  
a 2.611528498856806 1.3669e-08 au
q 2.234996409961775 1.0946e-07 au
i 14.6639010031022 4.8878e-06 deg
node 208.9368530014819 1.7448e-05 deg
peri 135.5940885409365 2.3337e-05 deg
M 288.7466572084702 1.7945e-05 deg
tp 2459305.600784347862
(2021-Apr-01.10078435)
7.804e-05 TDB
period 1541.489536660547
4.22
1.2102e-05
3.313e-08
d
yr
n .2335403461640726 1.8336e-09 deg/d
Q 2.988060587751836 1.564e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1045  
   data-arc span      8108 days (22.20 yr)  
   first obs. used      1998-03-31  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53967  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 20:59:21  

Additional Information
 Earth MOID = 1.2535 au 
 Jupiter MOID = 2.55401 au 
 T_jup = 3.349 
[ 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 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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