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85718 (1998 SG58)
Classification: Main-belt Asteroid          SPK-ID: 2085718
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1237566207245998 5.058e-08  
a 2.334893949267636 1.0422e-08 au
q 2.045935364355958 1.2044e-07 au
i 6.754804034026067 6.1953e-06 deg
node 3.473227204466055 4.1214e-05 deg
peri 302.4949660125033 4.6779e-05 deg
M 73.84868156407134 2.1856e-05 deg
tp 2458733.175100727746
(2019-Sep-06.67510073)
7.8808e-05 TDB
period 1303.16427727306
3.57
8.7254e-06
2.389e-08
d
yr
n .2762506663805418 1.8496e-09 deg/d
Q 2.623852534179313 1.1712e-08 au
  Orbit Determination Parameters
   # obs. used (total)      650  
   data-arc span      17201 days (47.09 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55182  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:00:02  

Additional Information
 Earth MOID = 1.04085 au 
 Jupiter MOID = 2.61634 au 
 T_jup = 3.549 
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Orbital Elements at Epoch 2456714.5 (2014-Feb-26.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1231894769331321 5.0397e-08  
q 2.048710355450588 1.1997e-07 au
tp 2456125.975517172380
(2012-Jul-17.47551717)
7.8819e-05 TDB
node 3.565389029252278 4.1229e-05 deg
peri 302.4940349581431 4.6866e-05 deg
i 6.752655089898946 6.1919e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      650  
   data-arc span      17201 days (47.09 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55182  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:00:02  

Additional Information
 Jupiter MOID = 2.61634 au 
 T_jup = 3.549 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.539897734435642E-15 -6.029383073192128E-15 9.32306021184931E-13 2.695843570902568E-15 2.575002707205497E-13 -6.441902672878555E-15
q -6.029383073192128E-15 1.439364570812271E-14 -2.224874098725252E-12 -6.002868446165995E-15 -6.076612907450903E-13 1.502297795649761E-14
tp 9.32306021184931E-13 -2.224874098725252E-12 6.212432693733696E-9 1.128972606812571E-11 1.773381588048049E-9 -2.293931795375702E-12
node 2.695843570902568E-15 -6.002868446165995E-15 1.128972606812571E-11 1.699854350792874E-9 -1.683986762287535E-9 -4.115820432155992E-11
peri 2.575002707205497E-13 -6.076612907450903E-13 1.773381588048049E-9 -1.683986762287535E-9 2.196466701684563E-9 4.018286351906986E-11
i -6.441902672878555E-15 1.502297795649761E-14 -2.293931795375702E-12 -4.115820432155992E-11 4.018286351906986E-11 3.833941604706882E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.8   n/a MPO337904  

85718 (1998 SG58)          Discovered 1998-Sep-17 by LONEOS at Anderson Mesa
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1998 SG58 = 1078 T-2 = 1997 EY53 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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