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85739 (1998 SF105)
Classification: Main-belt Asteroid          SPK-ID: 2085739
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 .1810590119609073 4.2505e-08  
a 2.351956510128815 1.0693e-08 au
q 1.926113588229868 1.0335e-07 au
i 3.593958793871197 4.7529e-06 deg
node 74.33368583107206 7.0072e-05 deg
peri 266.232495072349 7.1234e-05 deg
M 20.49853206714487 1.3579e-05 deg
tp 2458925.482494602530
(2020-Mar-16.98249460)
4.9559e-05 TDB
period 1317.47492233237
3.61
8.9847e-06
2.46e-08
d
yr
n .2732499829011393 1.8635e-09 deg/d
Q 2.777799432027761 1.2629e-08 au
  Orbit Determination Parameters
   # obs. used (total)      572  
   data-arc span      10556 days (28.90 yr)  
   first obs. used      1991-11-29  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58609  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:59:58  

Additional Information
 Earth MOID = .921673 au 
 Jupiter MOID = 2.61592 au 
 T_jup = 3.532 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457261.5 (2015-Aug-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .181758004132769 4.2538e-08  
q 1.924272260801849 1.0349e-07 au
tp 2457608.918675890735
(2016-Aug-08.41867589)
4.7866e-05 TDB
node 74.34142336742123 7.0066e-05 deg
peri 266.5359121248988 7.1219e-05 deg
i 3.594705746347621 4.7539e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      572  
   data-arc span      10556 days (28.90 yr)  
   first obs. used      1991-11-29  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58609  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:59:58  

Additional Information
 Jupiter MOID = 2.61592 au 
 T_jup = 3.532 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.809487800987495E-15 -4.388449951292634E-15 3.346095652005931E-13 -4.751197999878952E-15 1.44992799386033E-13 -1.686449277516095E-15
q -4.388449951292634E-15 1.071011152720571E-14 -7.568524763149146E-13 1.051765782918181E-14 -3.417007213890757E-13 4.226594788531005E-15
tp 3.346095652005931E-13 -7.568524763149146E-13 2.291128274893522E-9 2.188256888712784E-14 6.254261652796127E-10 -5.849069063930725E-13
node -4.751197999878952E-15 1.051765782918181E-14 2.188256888712784E-14 4.909261450854504E-9 -4.899198032835293E-9 -6.959452221385579E-11
peri 1.44992799386033E-13 -3.417007213890757E-13 6.254261652796127E-10 -4.899198032835293E-9 5.072189113318488E-9 6.922965651945593E-11
i -1.686449277516095E-15 4.226594788531005E-15 -5.849069063930725E-13 -6.959452221385579E-11 6.922965651945593E-11 2.259997396881347E-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 16.2   n/a MPO436374  
diameter diameter 3.409 km 0.096 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.042   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85739 (1998 SF105)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1998 SF105 = 2002 XK24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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