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47452 (1999 XY221)
Classification: Main-belt Asteroid          SPK-ID: 2047452
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09254673995515247 2.92e-08  
a 2.388653993990981 9.3022e-09 au
q 2.167591853966261 6.9789e-08 au
i 6.514199436775204 5.0715e-06 deg
node 43.03968886668508 3.2006e-05 deg
peri 242.368076200755 4.3432e-05 deg
M 344.6662218773617 2.959e-05 deg
tp 2459057.934780868124
(2020-Jul-27.43478087)
0.0001109 TDB
period 1348.429652963255
3.69
7.8768e-06
2.157e-08
d
yr
n .2669772199156837 1.5595e-09 deg/d
Q 2.6097161340157 1.0163e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1194  
   data-arc span      10492 days (28.73 yr)  
   first obs. used      1991-09-30  
   last obs. used      2020-06-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51705  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:42:11  

Additional Information
 Earth MOID = 1.16048 au 
 Jupiter MOID = 2.49954 au 
 T_jup = 3.519 
[ 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 15.2   n/a MPO436114  

47452 (1999 XY221)          Discovered 1999-Dec-15 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XY221 = 2001 FY68 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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