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21244 (1995 XU1)
Classification: Main-belt Asteroid          SPK-ID: 2021244
[ 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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .190158339686882 3.3428e-08  
a 2.424334828329659 7.8685e-09 au
q 1.963327342529409 7.9478e-08 au
i 2.003241147787377 3.9098e-06 deg
node 186.6706715302184 8.8421e-05 deg
peri 126.3305154442543 8.8952e-05 deg
M 260.8709104219257 1.1207e-05 deg
tp 2459580.152220793162
(2021-Dec-31.65222079)		 4.3881e-05 TDB
period 1378.755722132331
3.77		 6.7124e-06
1.838e-08		 d
yr
n .2611049906964213 1.2712e-09 deg/d
Q 2.885342314129909 9.3647e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1645  
   data-arc span      9416 days (25.78 yr)  
   first obs. used      1995-06-04  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51212  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:42:14  

Additional Information
 Earth MOID = .948136 au 
 Jupiter MOID = 2.39459 au 
 T_jup = 3.486 
[ 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 14.89   n/a E2021B10  
diameter diameter 3.104 km 0.285 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.167   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21244 (1995 XU1)          Discovered 1995-Dec-14 by AMOS at Haleakala
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1995 XU1 = 1998 FJ58 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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