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JPL Small-Body Database Browser
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59166 (1998 YZ18)
Classification: Main-belt Asteroid          SPK-ID: 2059166
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1685560184979227 5.0198e-08  
a 2.646349965099983 1.4583e-08 au
q 2.200291751430613 1.3866e-07 au
i 2.904871786108712 5.5848e-06 deg
node 193.7893760959027 8.4504e-05 deg
peri 209.0191704466277 8.6018e-05 deg
M 12.42769763276947 1.5277e-05 deg
tp 2458946.217790179504
(2020-Apr-06.71779018)
6.6574e-05 TDB
period 1572.422834286778
4.31
1.2998e-05
3.559e-08
d
yr
n .2289460520097887 1.8925e-09 deg/d
Q 3.092408178769352 1.7041e-08 au
  Orbit Determination Parameters
   # obs. used (total)      427  
   data-arc span      9679 days (26.50 yr)  
   first obs. used      1993-07-24  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55662  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 12:43:47  

Additional Information
 Earth MOID = 1.20945 au 
 Jupiter MOID = 2.30887 au 
 T_jup = 3.370 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457208.5 (2015-Jul-05.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .168504326669554 5.028e-08  
q 2.200872379829165 1.3894e-07 au
tp 2457367.431319984949
(2015-Dec-10.93131999)
6.3063e-05 TDB
node 193.8443830295274 8.4363e-05 deg
peri 207.8519554541433 8.5879e-05 deg
i 2.904531208546808 5.5942e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      427  
   data-arc span      9679 days (26.50 yr)  
   first obs. used      1993-07-24  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55662  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 12:43:47  

Additional Information
 Jupiter MOID = 2.30887 au 
 T_jup = 3.370 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.528122090251327E-15 -6.9643194822637E-15 -7.501638377190929E-13 1.976432724802403E-14 -1.461156925287249E-13 -2.228897122635855E-15
q -6.9643194822637E-15 1.930424808118404E-14 2.134001297398857E-12 -5.554646731651998E-14 4.149345013732613E-13 6.284726757963207E-15
tp -7.501638377190929E-13 2.134001297398857E-12 3.976898596759888E-9 -1.989572641700062E-12 1.025949624601446E-9 8.396769655900483E-13
node 1.976432724802403E-14 -5.554646731651998E-14 -1.989572641700062E-12 7.117067168108234E-9 -7.107093005028879E-9 -4.753427641559397E-12
peri -1.461156925287249E-13 4.149345013732613E-13 1.025949624601446E-9 -7.107093005028879E-9 7.37521691405349E-9 4.884793163395217E-12
i -2.228897122635855E-15 6.284726757963207E-15 8.396769655900483E-13 -4.753427641559397E-12 4.884793163395217E-12 3.129561357604791E-11

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 16.3   n/a MPO449380  

59166 (1998 YZ18)          Discovered 1998-Dec-25 by Spacewatch at Kitt Peak
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 YZ18 = 2002 SF50 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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