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JPL Small-Body Database Browser
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71168 (1999 XQ204)
Classification: Main-belt Asteroid          SPK-ID: 2071168
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1529032384513437 4.4098e-08  
a 2.736163927063163 1.7065e-08 au
q 2.317795601681459 1.1821e-07 au
i 13.00113716033756 5.4033e-06 deg
node 323.6638674766415 2.1972e-05 deg
peri 133.1170189101973 2.8861e-05 deg
M 192.650983262064 1.7673e-05 deg
tp 2459768.979453666821
(2022-Jul-08.47945367)
8.2975e-05 TDB
period 1653.14746816401
4.53
1.5465e-05
4.234e-08
d
yr
n .2177664164466931 2.0372e-09 deg/d
Q 3.154532252444867 1.9674e-08 au
  Orbit Determination Parameters
   # obs. used (total)      778  
   data-arc span      7595 days (20.79 yr)  
   first obs. used      1998-08-17  
   last obs. used      2019-06-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53689  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 16:21:47  

Additional Information
 Earth MOID = 1.35463 au 
 Jupiter MOID = 2.02123 au 
 T_jup = 3.298 
[ 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 14.6   n/a MPO299431  
diameter diameter 3.644 km 0.582 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.160   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

71168 (1999 XQ204)          Discovered 1999-Dec-12 by LINEAR at Socorro
Reference: 20031109/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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