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JPL Small-Body Database Browser
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66950 (1999 XQ11)
Classification: Main-belt Asteroid          SPK-ID: 2066950
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 .05450522737588803 4.5495e-08  
a 2.964820509785619 1.9549e-08 au
q 2.803222293771057 1.4059e-07 au
i 9.438793448048342 4.7104e-06 deg
node 304.9439861240863 3.1018e-05 deg
peri 102.2608821166314 6.1172e-05 deg
M 6.439893920201858 5.0576e-05 deg
tp 2458967.144131797268
(2020-Apr-27.64413180)
0.00026196 TDB
period 1864.644464921091
5.11
1.8443e-05
5.049e-08
d
yr
n .1930662958931609 1.9096e-09 deg/d
Q 3.126418725800181 2.0615e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1011  
   data-arc span      7804 days (21.37 yr)  
   first obs. used      1998-07-25  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50751  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 07:05:44  

Additional Information
 Earth MOID = 1.83291 au 
 Jupiter MOID = 2.10601 au 
 T_jup = 3.242 
[ 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 14.3   n/a MPO502576  
diameter diameter 4.801 km 0.337 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.176   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66950 (1999 XQ11)          Discovered 1999-Dec-06 by CSS at Catalina
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

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