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15371 Steward (1996 RZ18)
Classification: Main-belt Asteroid          SPK-ID: 2015371
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1090643609238303 3.6507e-08  
a 2.994932428768839 1.4667e-08 au
q 2.66829203741511 1.1366e-07 au
i 2.738803674241403 4.916e-06 deg
node 171.1608229514617 7.434e-05 deg
peri 126.5268450753983 7.7529e-05 deg
M 328.2257834170059 2.3134e-05 deg
tp 2459563.590331301122
(2021-Dec-15.09033130)
0.00012194 TDB
period 1893.123599484688
5.18
1.3907e-05
3.808e-08
d
yr
n .1901619102408277 1.3969e-09 deg/d
Q 3.321572820122566 1.6267e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1196  
   data-arc span      10855 days (29.72 yr)  
   first obs. used      1991-10-07  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55606  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 03:48:50  

Additional Information
 Earth MOID = 1.65325 au 
 Jupiter MOID = 1.86321 au 
 T_jup = 3.244 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456909.5 (2014-Sep-09.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1069975847201402 3.6312e-08  
q 2.678562771610272 1.1276e-07 au
tp 2457664.876099761565
(2016-Oct-03.37609976)
0.0001219 TDB
node 171.1867723608311 7.4444e-05 deg
peri 125.4822252902292 7.7755e-05 deg
i 2.734879562339252 4.9111e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1196  
   data-arc span      10855 days (29.72 yr)  
   first obs. used      1991-10-07  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55606  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 03:48:50  

Additional Information
 Jupiter MOID = 1.86321 au 
 T_jup = 3.244 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.318572869864138E-15 -4.067886803053889E-15 6.952400225355988E-13 -9.759897360804751E-16 1.739724671050826E-13 -1.78367330596531E-16
q -4.067886803053889E-15 1.271422826142206E-14 -1.873212804584159E-12 2.891462255650872E-15 -5.044305369083596E-13 6.761337713773881E-16
tp 6.952400225355988E-13 -1.873212804584159E-12 1.486039849055262E-8 -6.367363766651922E-12 2.743319004653323E-9 -1.362747883536265E-12
node -9.759897360804751E-16 2.891462255650872E-15 -6.367363766651922E-12 5.541972589061426E-9 -5.536050284555865E-9 3.301092158176338E-11
peri 1.739724671050826E-13 -5.044305369083596E-13 2.743319004653323E-9 -5.536050284555865E-9 6.045815619439695E-9 -3.32065842657886E-11
i -1.78367330596531E-16 6.761337713773881E-16 -1.362747883536265E-12 3.301092158176338E-11 -3.32065842657886E-11 2.411885884276775E-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 14.41   n/a E2021B10  

15371 Steward           Discovered 1996 Sept. 15 by Spacewatch at Kitt Peak.
The Steward Observatory, named in memory of Lavinia Steward, is the research organization associated with the department of astronomy of the University of Arizona. Besides operating telescopes at several locations, its faculty, staff and students are leaders in instrumental development and in theoretical studies.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040713/MPCPages.arcLast Updated: 2004-07-14

[ show close-approach data ]
Alternate Designations
 1996 RZ18 = 2000 JT13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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