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85754 (1998 SJ156)
Classification: Outer Main-belt Asteroid          SPK-ID: 2085754
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1540754748179836 6.0807e-08  
a 3.24578001236309 2.8703e-08 au
q 2.745684915803526 2.0309e-07 au
i 3.290385047452324 7.5628e-06 deg
node 14.06640805736013 8.6523e-05 deg
peri 33.01569460585733 8.9249e-05 deg
M 239.6074324275725 2.528e-05 deg
tp 2459714.789432433674
(2022-May-15.28943243)
0.00015685 TDB
period 2135.880983860787
5.85
2.8332e-05
7.757e-08
d
yr
n .1685487172367017 2.2358e-09 deg/d
Q 3.745875108922653 3.3125e-08 au
  Orbit Determination Parameters
   # obs. used (total)      585  
   data-arc span      13724 days (37.57 yr)  
   first obs. used      1981-10-30  
   last obs. used      2019-05-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57754  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:38:11  

Additional Information
 Earth MOID = 1.75614 au 
 Jupiter MOID = 1.66177 au 
 T_jup = 3.161 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456500.5 (2013-Jul-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1594564657873539 6.0395e-08  
q 2.719002787079005 2.0077e-07 au
tp 2455460.332412792468
(2010-Sep-20.83241279)
0.00011893 TDB
node 14.32481771140741 8.6179e-05 deg
peri 32.97414943169161 8.8723e-05 deg
i 3.302182148023121 7.5849e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      585  
   data-arc span      13724 days (37.57 yr)  
   first obs. used      1981-10-30  
   last obs. used      2019-05-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57754  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:38:11  

Additional Information
 Jupiter MOID = 1.66177 au 
 T_jup = 3.161 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.647542044511868E-15 -1.203820590605576E-14 -2.700124293545643E-12 1.273007877083702E-14 -5.468176631284663E-13 6.547099617268925E-16
q -1.203820590605576E-14 4.030786763924485E-14 9.911338860728037E-12 -4.08517269871229E-14 2.008834234292224E-12 -3.191632305130832E-15
tp -2.700124293545643E-12 9.911338860728037E-12 1.414532812336705E-8 -2.25605587945425E-11 2.523791420355553E-9 -1.419270684851217E-12
node 1.273007877083702E-14 -4.08517269871229E-14 -2.25605587945425E-11 7.42677733469426E-9 -7.417880388323044E-9 -1.944149217247454E-11
peri -5.468176631284663E-13 2.008834234292224E-12 2.523791420355553E-9 -7.417880388323044E-9 7.871807745042391E-9 1.903058224505078E-11
i 6.547099617268925E-16 -3.191632305130832E-15 -1.419270684851217E-12 -1.944149217247454E-11 1.903058224505078E-11 5.753057794537148E-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 14.5   n/a MPO348041  

85754 (1998 SJ156)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1998 SJ156 = 1981 UU4 = 2000 CB15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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