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18058 (1999 XY129)
Classification: Jupiter Trojan          SPK-ID: 2018058
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08006768198393278 4.9876e-08  
a 5.11920426778888 1.1493e-07 au
q 4.709321448464769 3.3304e-07 au
i 9.072112331756426 6.6015e-06 deg
node 26.07271009405078 3.7394e-05 deg
peri 50.73289817824381 6.522e-05 deg
M 288.0880179758305 5.5763e-05 deg
tp 2460045.585935227254
(2023-Apr-11.08593523)
0.00067117 TDB
period 4230.60146749341
11.58
0.00014247
3.901e-07
d
yr
n .08509428334626293 2.8657e-09 deg/d
Q 5.529087087112991 1.2413e-07 au
  Orbit Determination Parameters
   # obs. used (total)      775  
   data-arc span      17278 days (47.30 yr)  
   first obs. used      1973-09-19  
   last obs. used      2021-01-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50831  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:21:16  

Additional Information
 Earth MOID = 3.73277 au 
 Jupiter MOID = .0635916 au 
 T_jup = 2.969 
[ 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 12.04   n/a E2021B10  
rotation period rot_per 374.846 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

18058 (1999 XY129)          Discovered 1999-Dec-12 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XY129 = 1998 QY5 = 3699 T-2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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