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134699 (1999 XX118)
Classification: Main-belt Asteroid          SPK-ID: 2134699
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2022357444360815 4.2927e-08  
a 2.409184640262454 8.5406e-09 au
q 1.921961391055004 1.0178e-07 au
i 1.538433885129701 3.2545e-06 deg
node 318.514398130747 0.00014474 deg
peri 88.17053538171068 0.00014499 deg
M 236.6437752320866 1.0419e-05 deg
tp 2459668.517534285492
(2022-Mar-30.01753429)
4.1159e-05 TDB
period 1365.85172462738
3.74
7.263e-06
1.989e-08
d
yr
n .2635718017621658 1.4016e-09 deg/d
Q 2.896407889469905 1.0268e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1014  
   data-arc span      9073 days (24.84 yr)  
   first obs. used      1995-08-22  
   last obs. used      2020-06-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49402  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 18:09:32  

Additional Information
 Earth MOID = .931476 au 
 Jupiter MOID = 2.49859 au 
 T_jup = 3.492 
[ 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 15.72   n/a E2021B55  
diameter diameter 1.935 km 0.591 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.659 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.298   0.198 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

134699 (1999 XX118)          Discovered 1999-Dec-05 by CSS at Catalina
Reference: 20060907/Numbers.arcLast Updated: 2006-09-10

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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