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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1667269069922918 5.5914e-08  
a 2.608785914620203 1.1728e-08 au
q 2.173831108070519 1.4236e-07 au
i 14.13987175996969 4.1853e-06 deg
node 137.742890233969 2.2013e-05 deg
peri 236.7453611336343 2.646e-05 deg
M 80.77346420048222 1.4492e-05 deg
tp 2458655.179551118753
(2019-Jun-20.67955112)
6.1587e-05 TDB
period 1539.061903903173
4.21
1.0378e-05
2.841e-08
d
yr
n .2339087200371952 1.5773e-09 deg/d
Q 3.043740721169887 1.3683e-08 au
  Orbit Determination Parameters
   # obs. used (total)      772  
   data-arc span      7713 days (21.12 yr)  
   first obs. used      1998-12-17  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52628  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:39:59  

Additional Information
 Earth MOID = 1.20546 au 
 Jupiter MOID = 2.48802 au 
 T_jup = 3.349 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457103.5 (2015-Mar-22.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1671334760242156 5.6112e-08  
q 2.172142851929467 1.429e-07 au
tp 2457112.134023344884
(2015-Mar-30.63402335)
6.0446e-05 TDB
node 137.9125089391186 2.1972e-05 deg
peri 235.7487903635592 2.6422e-05 deg
i 14.1552993825162 4.1884e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      772  
   data-arc span      7713 days (21.12 yr)  
   first obs. used      1998-12-17  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52628  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:39:59  

Additional Information
 Jupiter MOID = 2.48802 au 
 T_jup = 3.349 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.148612272204431E-15 -8.002980442533577E-15 8.821934478394039E-13 -3.113503804485819E-14 1.021244849665866E-13 -1.195126683072257E-14
q -8.002980442533577E-15 2.04211234016886E-14 -2.295480714358529E-12 7.882627484849679E-14 -2.718606347770329E-13 3.081205812088879E-14
tp 8.821934478394039E-13 -2.295480714358529E-12 3.653667893750321E-9 -3.457494501919432E-11 9.161276457859146E-10 -1.2812741767964E-11
node -3.113503804485819E-14 7.882627484849679E-14 -3.457494501919432E-11 4.827589786864927E-10 -4.748420151003835E-10 -6.220667871001512E-12
peri 1.021244849665866E-13 -2.718606347770329E-13 9.161276457859146E-10 -4.748420151003835E-10 6.98113241319148E-10 3.319461339851884E-12
i -1.195126683072257E-14 3.081205812088879E-14 -1.2812741767964E-11 -6.220667871001512E-12 3.319461339851884E-12 1.754304549084517E-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 15.0   n/a MPO502667  
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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