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JPL Small-Body Database Browser
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91354 (1999 JY55)
Classification: Main-belt Asteroid          SPK-ID: 2091354
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .137107630044745 7.7624e-08  
a 2.600128819067281 2.9763e-08 au
q 2.243631318873924 2.1403e-07 au
i 7.425807020287536 7.2694e-06 deg
node 226.3963482452727 5.1762e-05 deg
peri 356.0028119951899 6.8857e-05 deg
M 15.37976411179088 5.8784e-05 deg
tp 2458935.075878770128
(2020-Mar-26.57587877)
0.00024914 TDB
period 1531.407339641664
4.19
2.6295e-05
7.199e-08
d
yr
n .2350778859948764 4.0363e-09 deg/d
Q 2.956626319260637 3.3844e-08 au
  Orbit Determination Parameters
   # obs. used (total)      394  
   data-arc span      7175 days (19.64 yr)  
   first obs. used      1999-05-10  
   last obs. used      2018-12-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67717  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:28:11  

Additional Information
 Earth MOID = 1.23504 au 
 Jupiter MOID = 2.02627 au 
 T_jup = 3.390 
[ 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 15.8   n/a MPO468899  

91354 (1999 JY55)          Discovered 1999-May-10 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1999 JY55 = 2003 FM102 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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