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22718 (1998 SY15)
Classification: Main-belt Asteroid          SPK-ID: 2022718
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08761787871808049 3.4339e-08  
a 3.157692226177303 1.6421e-08 au
q 2.881021931675075 1.1007e-07 au
i .8076475217110742 3.8808e-06 deg
node 307.8122825761333 0.00023945 deg
peri 169.9329048523266 0.0002407 deg
M 230.5418325658247 2.6501e-05 deg
tp 2459937.521365859921
(2022-Dec-24.02136586)
0.00015376 TDB
period 2049.524545019386
5.61
1.5987e-05
4.377e-08
d
yr
n .1756504945865846 1.3701e-09 deg/d
Q 3.434362520679533 1.7859e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1916  
   data-arc span      9891 days (27.08 yr)  
   first obs. used      1993-12-08  
   last obs. used      2021-01-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5045  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:10:24  

Additional Information
 Earth MOID = 1.89712 au 
 Jupiter MOID = 1.63312 au 
 T_jup = 3.200 
[ 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 13.24   n/a E2021B10  

22718 (1998 SY15)          Discovered 1998-Sep-16 by Spacewatch at Kitt Peak
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 SY15 = 1999 XH97 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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