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JPL Small-Body Database Browser
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85847 (1998 YA28)
Classification: Main-belt Asteroid          SPK-ID: 2085847
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1664645544155286 5.6421e-08  
a 2.608126207672379 1.2314e-08 au
q 2.173965640652734 1.4412e-07 au
i 14.13933978764809 4.7178e-06 deg
node 137.7495618852019 2.3358e-05 deg
peri 236.7238340287565 2.7707e-05 deg
M 347.2220670701402 1.5111e-05 deg
tp 2458655.107140467299
(2019-Jun-20.60714047)
6.4663e-05 TDB
period 1538.478146358793
4.21
1.0895e-05
2.983e-08
d
yr
n .2339974739660965 1.6571e-09 deg/d
Q 3.042286774692024 1.4363e-08 au
  Orbit Determination Parameters
   # obs. used (total)      704  
   data-arc span      7660 days (20.97 yr)  
   first obs. used      1998-12-17  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53933  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 08:03:46  

Additional Information
 Earth MOID = 1.20473 au 
 Jupiter MOID = 2.48561 au 
 T_jup = 3.349 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456733.5 (2014-Mar-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1673232502293081 5.6598e-08  
q 2.171908095090555 1.4477e-07 au
tp 2457112.146160940412
(2015-Mar-30.64616094)
6.2428e-05 TDB
node 137.9134521736343 2.3311e-05 deg
peri 235.7616428926246 2.7631e-05 deg
i 14.1546062374574 4.7231e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      704  
   data-arc span      7660 days (20.97 yr)  
   first obs. used      1998-12-17  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53933  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 08:03:46  

Additional Information
 Jupiter MOID = 2.48561 au 
 T_jup = 3.349 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.203381901600752E-15 -8.175282163086512E-15 7.69583653194936E-13 -3.300438739411174E-14 8.521225768829832E-14 -1.188852240375354E-14
q -8.175282163086512E-15 2.095761425903792E-14 -1.951680741465395E-12 8.29547254967122E-14 -2.182894309349122E-13 3.03585076898617E-14
tp 7.69583653194936E-13 -1.951680741465395E-12 3.897242071634432E-9 -4.005425079700656E-11 9.621381738623853E-10 -1.439314498772211E-11
node -3.300438739411174E-14 8.29547254967122E-14 -4.005425079700656E-11 5.433947318909273E-10 -5.344776468848507E-10 1.043073440044669E-11
peri 8.521225768829832E-14 -2.182894309349122E-13 9.621381738623853E-10 -5.344776468848507E-10 7.634800573312221E-10 -1.304963897672357E-11
i -1.188852240375354E-14 3.03585076898617E-14 -1.439314498772211E-11 1.043073440044669E-11 -1.304963897672357E-11 2.230791789756266E-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 14.9   n/a MPO453289  
diameter diameter 2.614 km 0.761 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.259   0.078 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85847 (1998 YA28)          Discovered 1998-Dec-19 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1998 YA28 = 2002 TG164 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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