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JPL Small-Body Database Browser
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18064 (1999 XY242)
Classification: Main-belt Asteroid          SPK-ID: 2018064
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1263418326527216 3.4856e-08  
a 2.56446903443122 1.2472e-08 au
q 2.240469316840024 9.2391e-08 au
i 13.21951398275698 4.53e-06 deg
node 210.6858242622082 1.5635e-05 deg
peri 264.0770970524491 2.4612e-05 deg
M 354.6513102323031 1.8865e-05 deg
tp 2459022.786379628677
(2020-Jun-22.28637963)
7.8618e-05 TDB
period 1500.011594386889
4.11
1.0943e-05
2.996e-08
d
yr
n .2399981449124368 1.7508e-09 deg/d
Q 2.888468752022415 1.4048e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1754  
   data-arc span      24247 days (66.38 yr)  
   first obs. used      1953-09-16  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4395  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:18:31  

Additional Information
 Earth MOID = 1.30194 au 
 Jupiter MOID = 2.336 au 
 T_jup = 3.385 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457132.5 (2015-Apr-20.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1251348499204482 3.4772e-08  
q 2.243698319109753 9.2063e-08 au
tp 2457524.221701581840
(2016-May-15.72170158)
7.9365e-05 TDB
node 210.7021996624713 1.5639e-05 deg
peri 264.3931581317198 2.4754e-05 deg
i 13.21554039169808 4.5282e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1754  
   data-arc span      24247 days (66.38 yr)  
   first obs. used      1953-09-16  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4395  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:18:31  

Additional Information
 Jupiter MOID = 2.336 au 
 T_jup = 3.385 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.209075327952829E-15 -3.179611548921623E-15 -1.075247756255073E-12 1.343369163508178E-14 -2.464032735171155E-13 3.506740356287067E-16
q -3.179611548921623E-15 8.475590903592552E-15 2.694602211001631E-12 -3.625218126666592E-14 6.110255611430831E-13 -1.04321677306612E-15
tp -1.075247756255073E-12 2.694602211001631E-12 6.298756783883089E-9 -2.681943583334602E-11 1.534661667280471E-9 8.041233588419669E-12
node 1.343369163508178E-14 -3.625218126666592E-14 -2.681943583334602E-11 2.445696109336719E-10 -2.438738675933859E-10 1.987587789957011E-11
peri -2.464032735171155E-13 6.110255611430831E-13 1.534661667280471E-9 -2.438738675933859E-10 6.127715256657189E-10 -1.743679403422267E-11
i 3.506740356287067E-16 -1.04321677306612E-15 8.041233588419669E-12 1.987587789957011E-11 -1.743679403422267E-11 2.050477937043285E-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 13.3   n/a MPO350946  
diameter diameter 5.446 km 0.268 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.285   0.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18064 (1999 XY242)          Discovered 1999-Dec-13 by CSS at Catalina
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XY242 = 1982 VJ = 1998 QB88 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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