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134679 (1999 XX4)
Classification: Main-belt Asteroid          SPK-ID: 2134679
[ 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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2263627132323725 4.3834e-08  
a 2.408083067376279 1.5011e-08 au
q 1.86298285055605 1.0202e-07 au
i 2.83008290775158 4.5737e-06 deg
node 172.0274446007173 9.6187e-05 deg
peri 169.9076315207163 9.7017e-05 deg
M 281.7431133610752 1.8646e-05 deg
tp 2459497.205562260958
(2021-Oct-09.70556226)		 7.2872e-05 TDB
period 1364.915050949851
3.74		 1.2763e-05
3.494e-08		 d
yr
n .2637526780508972 2.4662e-09 deg/d
Q 2.953183284196507 1.8409e-08 au
   Orbit Determination Parameters
   # obs. used (total)      550  
   data-arc span      8506 days (23.29 yr)  
   first obs. used      1997-01-31  
   last obs. used      2020-05-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56907  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 18:09:26  

Additional Information
 Earth MOID = .853123 au 
 Jupiter MOID = 2.4566 au 
 T_jup = 3.484 
[ 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 16.12   n/a E2021B55  
diameter diameter 1.534 km 0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.272   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

134679 (1999 XX4)          Discovered 1999-Dec-04 by CSS at Catalina
Reference: 20060907/Numbers.arcLast Updated: 2006-09-10

[ show close-approach data ]
Alternate Designations
 1999 XX4 = 2002 LD26 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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