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22760 (1998 XR4)
Classification: Main-belt Asteroid          SPK-ID: 2022760
[ 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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05448139830846993 3.7919e-08  
a 2.693769381998798 1.0523e-08 au
q 2.54700905934696 1.0465e-07 au
i 5.183806696062303 3.785e-06 deg
node 307.9325126943706 4.2064e-05 deg
peri 59.36375799381506 5.3983e-05 deg
M 72.07864855664839 3.306e-05 deg
tp 2458877.172101305377
(2020-Jan-28.67210131)		 0.00014817 TDB
period 1614.875498651783
4.42		 9.4628e-06
2.591e-08		 d
yr
n .2229274023295012 1.3063e-09 deg/d
Q 2.840529704650635 1.1097e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2223  
   data-arc span      9529 days (26.09 yr)  
   first obs. used      1995-02-07  
   last obs. used      2021-03-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46945  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:11:36  

Additional Information
 Earth MOID = 1.54755 au 
 Jupiter MOID = 2.43396 au 
 T_jup = 3.363 
[ 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 13.75   n/a E2021B10  
diameter diameter 4.468 km 0.177 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.352   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22760 (1998 XR4)          Discovered 1998-Dec-12 by Kobayashi, T. at Oizumi
Reference: 20010309/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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