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49787 (1999 XY11)
Classification: Main-belt Asteroid          SPK-ID: 2049787
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2301989808673113 5.3129e-08  
a 2.278231216866265 9.9851e-09 au
q 1.753784712563556 1.2152e-07 au
i 24.41267722910389 6.0415e-06 deg
node 250.3650102495106 1.2633e-05 deg
peri 209.1155998887431 1.7485e-05 deg
M 317.2191671549715 1.4641e-05 deg
tp 2459149.759457466035
(2020-Oct-27.25945747)
5.1744e-05 TDB
period 1256.015863048277
3.44
8.2573e-06
2.261e-08
d
yr
n .2866205838565614 1.8843e-09 deg/d
Q 2.802677721168974 1.2284e-08 au
  Orbit Determination Parameters
   # obs. used (total)      718  
   data-arc span      13773 days (37.71 yr)  
   first obs. used      1983-02-14  
   last obs. used      2020-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51684  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:30:53  

Additional Information
 Earth MOID = .792296 au 
 Jupiter MOID = 2.51728 au 
 T_jup = 3.457 
[ 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 14.7   n/a MPO432055  

49787 (1999 XY11)          Discovered 1999-Dec-06 by CSS at Catalina
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XY11 = 2001 KP47 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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