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18062 (1999 XY187)
Classification: Jupiter Trojan          SPK-ID: 2018062
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04962600561037587 4.7278e-08  
a 5.147738044633383 9.089e-08 au
q 4.892276367549661 3.0665e-07 au
i 17.38332007069112 5.6429e-06 deg
node 38.34769524589096 1.7396e-05 deg
peri 33.5453329885376 7.1201e-05 deg
M 293.2980755143485 7.0965e-05 deg
tp 2459990.921870558359
(2023-Feb-15.42187056)
0.00085024 TDB
period 4266.021941574117
11.68
0.00011298
3.093e-07
d
yr
n .08438775161741521 2.235e-09 deg/d
Q 5.403199721717105 9.54e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1544  
   data-arc span      24805 days (67.91 yr)  
   first obs. used      1953-03-14  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48883  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:21:33  

Additional Information
 Earth MOID = 3.91672 au 
 Jupiter MOID = .0290249 au 
 T_jup = 2.907 
[ 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 10.99   n/a E2021B10  
diameter diameter 30.334 km 5.611 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  
rotation period rot_per 9.773 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[French, L.M.; Stephens, R.D.; Coley, D.; Wasserman, L.; Sieben, J. (2015) Icarus 254, 1-17.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.092   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)  

18062 (1999 XY187)          Discovered 1999-Dec-12 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XY187 = 1987 YM3 = 1998 VR37 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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