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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 
[ 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

[ 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
2097-Apr-01 18:15 00:01 Eunom 0.0359561758449492 0.0359373978162535 0.0359749554721158 6.89264349694822 6.89264344030674 2487065.260275060 1.37706846017297 1009.57483778504 32.7974677214049 -22.0078152459109 61631.2927225293 T 18 CATAB v2.0e-lin.ifort 2019-Jul-13 02:05:30 2019-Jul-13 02:05
2116-Apr-04 08:00 < 00:01 Eunom 0.0346075953249013 0.0346058452773954 0.0346093542453176 5.52640688093761 5.52640680754039 2494006.833538698 0.839103777051475 972.084759049762 37.7343327879753 -85.3409993072759 136672.292776497 T 18 CATAB v2.0e-lin.ifort 2019-Jul-13 02:05:30 2019-Jul-13 02:05
2133-Jul-03 15:56 00:03 Hygie 0.0442634835753577 0.0442424437045782 0.0442845245147161 4.46970585953262 4.46970566424357 2500306.163893730 2.94285937554376 1102.35778764588 31.6834108874459 -18.1196993271873 65149.8913601674 T 18 CATAB v2.0e-lin.ifort 2019-Jul-13 02:05:30 2019-Jul-13 02:05

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