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91371 (1999 JY94)
Classification: Main-belt Asteroid          SPK-ID: 2091371
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .230967803486577 4.0766e-08  
a 2.608020909759866 1.3088e-08 au
q 2.005652048785566 1.1209e-07 au
i 12.94335977387565 4.0751e-06 deg
node 188.686718496616 1.8702e-05 deg
peri 105.3511600634383 2.1115e-05 deg
M 318.4676630712248 1.0116e-05 deg
tp 2459177.979786734062
(2020-Nov-24.47978673)
4.3806e-05 TDB
period 1538.384977802564
4.21
1.1581e-05
3.171e-08
d
yr
n .2340116454557595 1.7616e-09 deg/d
Q 3.210389770734167 1.6111e-08 au
  Orbit Determination Parameters
   # obs. used (total)      767  
   data-arc span      7704 days (21.09 yr)  
   first obs. used      1999-05-12  
   last obs. used      2020-06-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58045  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 00:39:15  

Additional Information
 Earth MOID = 1.03625 au 
 Jupiter MOID = 2.18893 au 
 T_jup = 3.338 
[ 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 15.3   n/a MPO436410  

91371 (1999 JY94)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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