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85760 (1998 SG170)
Classification: Main-belt Asteroid          SPK-ID: 2085760
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1302628991004539 3.7289e-08  
a 2.339245127013542 1.3647e-08 au
q 2.034528275062149 9.1455e-08 au
i 10.57493434895037 4.9294e-06 deg
node 222.1387744061979 2.277e-05 deg
peri 51.67266767040574 3.0826e-05 deg
M 100.2880234706954 2.2348e-05 deg
tp 2458636.452042837903
(2019-Jun-01.95204284)
7.9662e-05 TDB
period 1306.808729924271
3.58
1.1436e-05
3.131e-08
d
yr
n .2754802533503598 2.4108e-09 deg/d
Q 2.643961978964936 1.5425e-08 au
  Orbit Determination Parameters
   # obs. used (total)      601  
   data-arc span      8076 days (22.11 yr)  
   first obs. used      1998-09-19  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5634  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:59:54  

Additional Information
 Earth MOID = 1.03719 au 
 Jupiter MOID = 2.45187 au 
 T_jup = 3.531 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456819.5 (2014-Jun-11.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1298082007682433 3.7284e-08  
q 2.036807675200797 9.1453e-08 au
tp 2457329.524210865869
(2015-Nov-03.02421087)
7.5807e-05 TDB
node 222.199415596297 2.2765e-05 deg
peri 51.62036010881943 3.0885e-05 deg
i 10.57374226349038 4.9291e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      601  
   data-arc span      8076 days (22.11 yr)  
   first obs. used      1998-09-19  
   last obs. used      2020-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5634  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:59:54  

Additional Information
 Jupiter MOID = 2.45187 au 
 T_jup = 3.531 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.39007318694912E-15 -3.383076040322188E-15 -4.862447398658725E-13 -3.183502383242899E-15 -9.19926471232911E-14 -1.708367902383392E-15
q -3.383076040322188E-15 8.363741475131043E-15 1.422726127846729E-12 7.214995444792123E-15 2.750357690372657E-13 4.293582194942932E-15
tp -4.862447398658725E-13 1.422726127846729E-12 5.746731105379306E-9 -6.301635588059039E-12 1.591073260075752E-9 -6.165746305903075E-14
node -3.183502383242899E-15 7.214995444792123E-15 -6.301635588059039E-12 5.182679662961618E-10 -5.106550392865816E-10 -1.704755739550634E-11
peri -9.19926471232911E-14 2.750357690372657E-13 1.591073260075752E-9 -5.106550392865816E-10 9.538929573704218E-10 1.668188738804475E-11
i -1.708367902383392E-15 4.293582194942932E-15 -6.165746305903075E-14 -1.704755739550634E-11 1.668188738804475E-11 2.429612709428448E-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 15.8   n/a MPO395766  
diameter diameter 2.885 km 0.615 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.134   0.070 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85760 (1998 SG170)          Discovered 1998-Sep-19 by LONEOS at Anderson Mesa
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

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Alternate Designations
 1998 SG170 = 2001 KG59 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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