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91340 (1999 JZ20)
Classification: Main-belt Asteroid          SPK-ID: 2091340
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1633534340291334 2.7897e-08  
a 2.31393995964033 6.6566e-09 au
q 1.935949921095848 6.342e-08 au
i 2.979704099807664 3.7132e-06 deg
node 45.74668686238964 6.0446e-05 deg
peri 74.02599756812454 6.1738e-05 deg
M 188.0589894017383 1.334e-05 deg
tp 2460010.549709360484
(2023-Mar-07.04970936)
4.8834e-05 TDB
period 1285.661254407034
3.52
5.5477e-06
1.519e-08
d
yr
n .280011549516624 1.2083e-09 deg/d
Q 2.691929998184812 7.7439e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1300  
   data-arc span      8682 days (23.77 yr)  
   first obs. used      1997-10-30  
   last obs. used      2021-08-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51793  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 02:02:02  

Additional Information
 Earth MOID = .954942 au 
 Jupiter MOID = 2.38748 au 
 T_jup = 3.563 
[ 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 15.46   n/a MPO637241  

91340 (1999 JZ20)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1999 JZ20 = 2001 XX240 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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