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85558 (1998 AB3)
Classification: Main-belt Asteroid          SPK-ID: 2085558
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .152568640267879 4.7457e-08  
a 3.192170689164747 2.3679e-08 au
q 2.705145547615904 1.5928e-07 au
i 9.450993552482929 5.0639e-06 deg
node 304.6176721556376 3.4581e-05 deg
peri 105.3917797110071 3.9682e-05 deg
M 16.19479563216487 1.8549e-05 deg
tp 2458906.786845657479
(2020-Feb-27.28684566)
0.0001072 TDB
period 2083.183778886482
5.70
2.3179e-05
6.346e-08
d
yr
n .172812405534585 1.9228e-09 deg/d
Q 3.679195830713591 2.7291e-08 au
  Orbit Determination Parameters
   # obs. used (total)      918  
   data-arc span      8325 days (22.79 yr)  
   first obs. used      1998-01-03  
   last obs. used      2020-10-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52125  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:00:34  

Additional Information
 Earth MOID = 1.73547 au 
 Jupiter MOID = 1.76699 au 
 T_jup = 3.157 
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Orbital Elements at Epoch 2457212.5 (2015-Jul-09.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1475317362675864 4.6883e-08  
q 2.726191117039208 1.5598e-07 au
tp 2456819.095217265560
(2014-Jun-10.59521727)
0.00011343 TDB
node 304.9729239658496 3.4379e-05 deg
peri 104.8777091632776 4.0002e-05 deg
i 9.471501854926931 5.0774e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      918  
   data-arc span      8325 days (22.79 yr)  
   first obs. used      1998-01-03  
   last obs. used      2020-10-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52125  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:00:34  

Additional Information
 Jupiter MOID = 1.76699 au 
 T_jup = 3.157 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.198016134780648E-15 -7.255758694356463E-15 -1.750031512774094E-12 -4.465841333877297E-15 -3.302838898123166E-13 -4.367284201289464E-15
q -7.255758694356463E-15 2.433000672995129E-14 5.254302925791136E-12 1.946097820586907E-14 1.005921934108999E-12 1.616898201330526E-14
tp -1.750031512774094E-12 5.254302925791136E-12 1.286615450588821E-8 1.005155083614607E-11 2.375758232900374E-9 5.919002488486509E-12
node -4.465841333877297E-15 1.946097820586907E-14 1.005155083614607E-11 1.181924509776971E-9 -1.162994196087924E-9 5.853501343620095E-11
peri -3.302838898123166E-13 1.005921934108999E-12 2.375758232900374E-9 -1.162994196087924E-9 1.60017124593856E-9 -5.653646880026009E-11
i -4.367284201289464E-15 1.616898201330526E-14 5.919002488486509E-12 5.853501343620095E-11 -5.653646880026009E-11 2.578046253139929E-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 14.0   n/a MPO337903  
diameter diameter 7.918 km 0.260 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.054   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85558 (1998 AB3)          Discovered 1998-Jan-03 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

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Alternate Designations
 1998 AB3 = 2002 XF15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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