Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
123381 (2000 WK57)
Classification: Main-belt Asteroid          SPK-ID: 2123381
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1488267177259368 2.8506e-08  
a 2.638840889791423 1.2256e-08 au
q 2.246110861562775 7.5303e-08 au
i 14.71393445840307 4.5912e-06 deg
node 82.13701997318584 1.4557e-05 deg
peri 51.21815429879094 2.2544e-05 deg
M 152.6398665143932 1.7758e-05 deg
tp 2458336.628979383693
(2018-Aug-06.12897938)
7.5875e-05 TDB
period 1565.734908444344
4.29
1.0908e-05
2.986e-08
d
yr
n .2299239788666925 1.6018e-09 deg/d
Q 3.031570918020071 1.408e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1148  
   data-arc span      7235 days (19.81 yr)  
   first obs. used      2000-11-01  
   last obs. used      2020-08-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .503  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:35:39  

Additional Information
 Earth MOID = 1.29079 au 
 Jupiter MOID = 2.16642 au 
 T_jup = 3.334 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457531.5 (2016-May-23.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1490519506883928 2.8457e-08  
q 2.243252687239793 7.5269e-08 au
tp 2456770.442684740971
(2014-Apr-22.94268474)
7.3123e-05 TDB
node 82.16299090593215 1.4548e-05 deg
peri 50.5226097482594 2.2591e-05 deg
i 14.72345024222344 4.5965e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1148  
   data-arc span      7235 days (19.81 yr)  
   first obs. used      2000-11-01  
   last obs. used      2020-08-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .503  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:35:39  

Additional Information
 Jupiter MOID = 2.16642 au 
 T_jup = 3.334 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.098101697513891E-16 -2.121480954196742E-15 -1.841660844165357E-13 -5.937397126023821E-15 -4.463617994755933E-14 5.181415436961097E-16
q -2.121480954196742E-15 5.665354737414506E-15 6.224795282186828E-13 1.50705878672822E-14 1.621647958233245E-13 -1.165681478377741E-15
tp -1.841660844165357E-13 6.224795282186828E-13 5.346909105946471E-9 -3.019668989443393E-12 1.274583158364063E-9 -5.955951920553073E-12
node -5.937397126023821E-15 1.50705878672822E-14 -3.019668989443393E-12 2.116366649348163E-10 -2.051693121825825E-10 -2.204789236579747E-11
peri -4.463617994755933E-14 1.621647958233245E-13 1.274583158364063E-9 -2.051693121825825E-10 5.10363211806145E-10 1.995728620940341E-11
i 5.181415436961097E-16 -1.165681478377741E-15 -5.955951920553073E-12 -2.204789236579747E-11 1.995728620940341E-11 2.11278167752087E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.6   n/a MPO475081  
diameter diameter 3.260 km 0.115 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.317   0.051 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

123381 (2000 WK57)          Discovered 2000-Nov-21 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Nov-24 07:55 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin