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71203 (1999 XK242)
Classification: Main-belt Asteroid          SPK-ID: 2071203
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08373258820258017 5.042e-08  
a 2.687822925827275 1.7079e-08 au
q 2.462764555617526 1.3332e-07 au
i 10.47570238929847 7.055e-06 deg
node 16.63559053162416 2.403e-05 deg
peri 46.18569994319277 4.8812e-05 deg
M 264.9188525922044 4.0588e-05 deg
tp 2459425.600211480232
(2021-Jul-30.10021148)
0.00018176 TDB
period 1609.531229955858
4.41
1.5341e-05
4.2e-08
d
yr
n .2236676078723077 2.1318e-09 deg/d
Q 2.912881296037025 1.8509e-08 au
  Orbit Determination Parameters
   # obs. used (total)      758  
   data-arc span      8649 days (23.68 yr)  
   first obs. used      1994-10-28  
   last obs. used      2018-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52093  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 04:32:25  

Additional Information
 Earth MOID = 1.48635 au 
 Jupiter MOID = 2.36949 au 
 T_jup = 3.344 
[ 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 14.9   n/a MPO302442  

71203 (1999 XK242)          Discovered 1999-Dec-12 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ hide close-approach data ]
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
1915-Apr-07 01:09 00:01 Psych 0.0197567874342741 0.0197513439727313 0.0197622540070141 4.55858775971048 4.55858762537011 2420594.547981990 1.24648460279199 1108.34602403355 36.390977007608 -75.9249635407171 78723.9519548079 T 17 CATAB v2.0e-lin.ifort 2019-Jul-13 04:32:39 2019-Jul-13 04:32
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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