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215911 (2005 JX21)
Classification: Main-belt Asteroid          SPK-ID: 2215911
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09492497721915553 4.029e-08  
a 2.404238704676981 1.4366e-08 au
q 2.176016400406107 9.8902e-08 au
i 7.579990330001361 3.7326e-06 deg
node 140.8566062767677 3.5597e-05 deg
peri 121.7049807430939 4.6105e-05 deg
M 345.2226243232671 2.609e-05 deg
tp 2459056.393282671504
(2020-Jul-25.89328267)
9.8465e-05 TDB
period 1361.647846134335
3.73
1.2205e-05
3.342e-08
d
yr
n .2643855391994529 2.3697e-09 deg/d
Q 2.632461008947856 1.573e-08 au
  Orbit Determination Parameters
   # obs. used (total)      346  
   data-arc span      8538 days (23.38 yr)  
   first obs. used      1997-02-01  
   last obs. used      2020-06-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62696  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 04:15:13  

Additional Information
 Earth MOID = 1.17134 au 
 Jupiter MOID = 2.44518 au 
 T_jup = 3.506 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.8   n/a MPO427269  

215911 (2005 JX21)          Discovered 2005-May-06 by CSS at Catalina
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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