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22759 (1998 XA4)
Classification: Main-belt Asteroid          SPK-ID: 2022759
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 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1804603103480141 1.5749e-08  
a 2.385301211785402 6.4806e-09 au
q 1.954849014833114 3.7219e-08 au
i 8.196512285833442 7.4577e-07 deg
node 48.64728324710564 5.7299e-06 deg
peri 335.4230755877809 5.9457e-06 deg
M 30.17743107785359 3.8006e-06 deg
tp 2459087.704172152495
(2020-Aug-26.20417215)
1.4149e-05 TDB
period 1345.591608521701
3.68
5.4838e-06
1.501e-08
d
yr
n .2675403129152273 1.0903e-09 deg/d
Q 2.81575340873769 7.6501e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2387  
   data-arc span      21644 days (59.26 yr)  
   first obs. used      1961-12-03  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40791  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:11:32  

Additional Information
 Earth MOID = .961298 au 
 Jupiter MOID = 2.6382 au 
 T_jup = 3.500 
[ 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 13.6   n/a MPO492987  
diameter diameter 5.287 km 0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.277   0.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22759 (1998 XA4)          Discovered 1998-Dec-11 by Kobayashi, T. at Oizumi
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 XA4 = 1961 XD = 1972 TM8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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