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150251 (1999 JR99)
Classification: Main-belt Asteroid          SPK-ID: 2150251
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2130705665439677 3.6596e-08  
a 2.679558589084161 1.7448e-08 au
q 2.108623522420244 9.8103e-08 au
i 16.09620349945399 5.5776e-06 deg
node 170.2513654655517 1.5654e-05 deg
peri 79.21463959433289 2.1288e-05 deg
M 327.2648161905063 1.6793e-05 deg
tp 2459346.181899710380
(2021-May-11.68189971)
7.5644e-05 TDB
period 1602.113621873928
4.39
1.5648e-05
4.284e-08
d
yr
n .2247031640483292 2.1947e-09 deg/d
Q 3.250493655748079 2.1165e-08 au
  Orbit Determination Parameters
   # obs. used (total)      508  
   data-arc span      7976 days (21.84 yr)  
   first obs. used      1999-05-12  
   last obs. used      2021-03-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56637  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 19:17:44  

Additional Information
 Earth MOID = 1.16426 au 
 Jupiter MOID = 1.98722 au 
 T_jup = 3.289 
[ 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 15.5   n/a MPO469594  

150251 (1999 JR99)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20070303/Numbers.arcLast Updated: 2007-03-07

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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
2071-Apr-05 16:58 00:02 Jupiter 1.979714126127 1.97971358370271 1.97971466855185 3.56280832892711 3.44062513908931 2477572.207125177 1.54295177010194 181.906908139765 23.3098294346735 85.1973283303004 1718882.2129649 T 22 CATAB v2.0f-lin.ifort 2021-Apr-13 19:17:46 2021-Apr-13 19:17

Alternate Designations
 1999 JR99 = 2003 DT22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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