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13835 (1999 XJ20)
Classification: Main-belt Asteroid          SPK-ID: 2013835
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0553795273663301 4.0995e-08  
a 2.846243528941797 1.3812e-08 au
q 2.688619907539525 1.1325e-07 au
i 3.046868969841276 3.8825e-06 deg
node 68.37129869356664 8.0491e-05 deg
peri 248.1877675907888 8.9685e-05 deg
M 178.0525669554656 4.129e-05 deg
tp 2458133.034423694720
(2018-Jan-14.53442369)		 0.0001998 TDB
period 1753.906797356142
4.80		 1.2767e-05
3.495e-08		 d
yr
n .2052560606656339 1.4941e-09 deg/d
Q 3.003867150344069 1.4577e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2125  
   data-arc span      16449 days (45.03 yr)  
   first obs. used      1975-11-02  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47455  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:54:40  

Additional Information
 Earth MOID = 1.6768 au 
 Jupiter MOID = 2.15266 au 
 T_jup = 3.303 
[ 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 13.4   n/a MPO502274  
diameter diameter 5.477 km 0.383 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.309   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

13835 (1999 XJ20)          Discovered 1999-Dec-05 by LINEAR at Socorro
Reference: 20000222/Numbers.arcLast Updated: 2004-04-19

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)		 Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1998-Feb-23 02:05 00:01 Iris 0.0432587559733223 0.0432580453674494 0.0432594665822596 3.76944617280882 3.76944613755376 2450867.586888450 1.07728483975062 97.3087682025472 34.6966323661474 85.5241926803116 185902.427219084 T 33 CATAB v2.0f-lin.ifort 2020-Dec-18 02:54:46 2020-Dec-18 02:54

Alternate Designations
 1999 XJ20 = 1975 VC4 = 1982 KH = 1985 YS1 = 1997 ET58 = 1998 MP29 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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