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(2015 YY18)
Classification: Centaur          SPK-ID: 3739244
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .830478459637828 3.7478e-06  
a 19.34987450311611 0.00044227 au
q 3.28022053158296 3.5011e-06 au
i 118.2478920143977 1.7462e-05 deg
node 258.10110664461 9.328e-06 deg
peri 147.7148377300119 0.00013529 deg
M 23.62977439000704 0.00081489 deg
tp 2457355.830233478086
(2015-Nov-29.33023348)
0.00060981 TDB
period 31089.63732885095
85.12
1.0659
0.002918
d
yr
n .01157942102032572 3.9699e-07 deg/d
Q 35.41952847464925 0.00080956 au
  Orbit Determination Parameters
   # obs. used (total)      86  
   data-arc span      389 days (1.07 yr)  
   first obs. used      2015-11-30  
   last obs. used      2016-12-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      2  
   norm. resid. RMS      .32925  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 15:45:14  

Additional Information
 Earth MOID = 2.39496 au 
 Jupiter MOID = 1.48058 au 
 T_jup = -0.748 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9   n/a MPO394303  

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