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JPL Small-Body Database Browser
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58149 (1987 SX11)
Classification: Mars-crossing Asteroid          SPK-ID: 2058149
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3801255783104143 5.8288e-08  
a 2.664996854543351 1.7212e-08 au
q 1.651963384014625 1.4939e-07 au
i 26.13273700150586 7.8352e-06 deg
node 172.9200481328443 1.0639e-05 deg
peri 236.8971388038894 1.4656e-05 deg
M 159.258977751034 1.3469e-05 deg
tp 2458297.516873312067
(2018-Jun-28.01687331)
5.472e-05 TDB
period 1589.071644069452
4.35
1.5394e-05
4.215e-08
d
yr
n .2265473689267253 2.1947e-09 deg/d
Q 3.678030325072077 2.3754e-08 au
  Orbit Determination Parameters
   # obs. used (total)      560  
   data-arc span      11913 days (32.62 yr)  
   first obs. used      1987-09-16  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5448  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 11:32:21  

Additional Information
 Earth MOID = .762448 au 
 Jupiter MOID = 2.18571 au 
 T_jup = 3.141 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457196.5 (2015-Jun-23.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3796376348797319 5.8158e-08  
q 1.654118917058081 1.4898e-07 au
tp 2456708.638086964019
(2014-Feb-20.13808696)
4.6319e-05 TDB
node 172.9242818238586 1.0637e-05 deg
peri 237.0624619999404 1.4662e-05 deg
i 26.12883854544829 7.8337e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      560  
   data-arc span      11913 days (32.62 yr)  
   first obs. used      1987-09-16  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5448  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 11:32:21  

Additional Information
 Jupiter MOID = 2.18571 au 
 T_jup = 3.141 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.382383330479863E-15 -8.649881667397482E-15 4.171827679864349E-13 -6.751849354852682E-15 -7.442559448659006E-14 -9.77696679159272E-16
q -8.649881667397482E-15 2.219441873637796E-14 -9.027163902798752E-13 1.528129533117311E-14 2.273891424950614E-13 -1.012636985456809E-15
tp 4.171827679864349E-13 -9.027163902798752E-13 2.14543695866642E-9 -2.790972095237274E-11 4.648032033391791E-10 -2.079169423458699E-11
node -6.751849354852682E-15 1.528129533117311E-14 -2.790972095237274E-11 1.131542032323334E-10 -1.063717334506196E-10 -6.195341274597221E-13
peri -7.442559448659006E-14 2.273891424950614E-13 4.648032033391791E-10 -1.063717334506196E-10 2.149871765535143E-10 -3.777726692311384E-12
i -9.77696679159272E-16 -1.012636985456809E-15 -2.079169423458699E-11 -6.195341274597221E-13 -3.777726692311384E-12 6.136617221793891E-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 15.1   n/a MPO468480  

58149 (1987 SX11)          Discovered 1987-Sep-26 by Debehogne, H. at La Silla
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1965-Nov-06 16:03 < 00:01 Iris 0.0292960164294084 0.0292931617061207 0.0292988719836441 10.5748788611418 10.5748788425856 2439071.168891544 0.562976634413701 299.502032711912 50.9991601447126 -63.2328973305751 77001.3744153038 T 20 CATAB v2.0f-lin.ifort 2020-May-20 11:32:38 2020-May-20 11:32

Alternate Designations
 1987 SX11 = 2000 PS25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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