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18063 (1999 XW211)
Classification: Jupiter Trojan          SPK-ID: 2018063
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05750635095367711 5.6987e-08  
a 5.153466723117698 1.0033e-07 au
q 4.857109657109995 3.4688e-07 au
i 17.98544992492952 6.1911e-06 deg
node 327.0154535958877 1.4425e-05 deg
peri 64.63503846859832 5.7096e-05 deg
M 351.5570647774497 5.1629e-05 deg
tp 2459300.716353750864
(2021-Mar-27.21635375)
0.00061166 TDB
period 4273.145108818359
11.70
0.00012479
3.417e-07
d
yr
n .08424708050683301 2.4604e-09 deg/d
Q 5.449823789125401 1.061e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1391  
   data-arc span      16923 days (46.33 yr)  
   first obs. used      1974-10-11  
   last obs. used      2021-02-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47621  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:21:36  

Additional Information
 Earth MOID = 3.90124 au 
 Jupiter MOID = .00728717 au 
 T_jup = 2.900 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.26   n/a E2021B10  
diameter diameter 31.122 km 0.273 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
geometric albedo albedo 0.073   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

18063 (1999 XW211)          Discovered 1999-Dec-13 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XW211 = 1974 TR1 = 1996 RM27 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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