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103154 (1999 XZ221)
Classification: Main-belt Asteroid          SPK-ID: 2103154
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1501109290616856 4.7774e-08  
a 2.637088563396535 1.4803e-08 au
q 2.241232749127135 1.3139e-07 au
i 14.27783993149503 7.5024e-06 deg
node 47.92422665190563 1.9501e-05 deg
peri 42.59567002009401 3.266e-05 deg
M 310.2600209897423 2.6537e-05 deg
tp 2459416.616833988386
(2021-Jul-21.11683399)
0.00011615 TDB
period 1564.175574335772
4.28
1.3171e-05
3.606e-08
d
yr
n .2301531911805196 1.9379e-09 deg/d
Q 3.032944377665934 1.7025e-08 au
  Orbit Determination Parameters
   # obs. used (total)      597  
   data-arc span      7738 days (21.19 yr)  
   first obs. used      1999-10-06  
   last obs. used      2020-12-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59342  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:33:29  

Additional Information
 Earth MOID = 1.27646 au 
 Jupiter MOID = 2.3161 au 
 T_jup = 3.337 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO296812  

103154 (1999 XZ221)          Discovered 1999-Dec-15 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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