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85623 (1998 HL123)
Classification: Main-belt Asteroid          SPK-ID: 2085623
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1952032558213956 4.0517e-08  
a 3.198757648339777 2.364e-08 au
q 2.574349740800261 1.3816e-07 au
i 19.89577277515837 4.4401e-06 deg
node 65.68303189412761 1.269e-05 deg
peri 101.0743535569282 1.9723e-05 deg
M 350.9054243289231 1.2074e-05 deg
tp 2459053.289843305983
(2020-Jul-22.78984331)
7.01e-05 TDB
period 2089.634995351422
5.72
2.3165e-05
6.342e-08
d
yr
n .1722788911943243 1.9098e-09 deg/d
Q 3.823165555879292 2.8255e-08 au
  Orbit Determination Parameters
   # obs. used (total)      895  
   data-arc span      8047 days (22.03 yr)  
   first obs. used      1998-04-17  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49299  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:38:31  

Additional Information
 Earth MOID = 1.66677 au 
 Jupiter MOID = 1.57168 au 
 T_jup = 3.073 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457627.5 (2016-Aug-27.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1963269030340187 4.0497e-08  
q 2.569736371296843 1.3796e-07 au
tp 2456963.310754644282
(2014-Nov-01.81075464)
7.2378e-05 TDB
node 65.7043745061972 1.2693e-05 deg
peri 101.0045510419389 1.9653e-05 deg
i 19.8976725215818 4.4404e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      895  
   data-arc span      8047 days (22.03 yr)  
   first obs. used      1998-04-17  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49299  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:38:31  

Additional Information
 Jupiter MOID = 1.57168 au 
 T_jup = 3.073 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.639982392250382E-15 -5.542498596052325E-15 5.18589872643284E-13 -7.135342881857575E-17 1.255415601279714E-13 -7.581424100436441E-15
q -5.542498596052325E-15 1.90332560112521E-14 -2.039315630897196E-12 1.690894808204846E-15 -4.583006203095274E-13 2.72524443712164E-14
tp 5.18589872643284E-13 -2.039315630897196E-12 5.238591031958833E-9 -2.565803749731325E-11 1.10244623460407E-9 2.307923113690383E-12
node -7.135342881857575E-17 1.690894808204846E-15 -2.565803749731325E-11 1.611120205515673E-10 -1.564497781340776E-10 3.488220598624265E-12
peri 1.255415601279714E-13 -4.583006203095274E-13 1.10244623460407E-9 -1.564497781340776E-10 3.862373076651692E-10 -2.756698396064284E-12
i -7.581424100436441E-15 2.72524443712164E-14 2.307923113690383E-12 3.488220598624265E-12 -2.756698396064284E-12 1.971732265678203E-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 MPO422237  
diameter diameter 4.910 km 1.055 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.184   0.118 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

85623 (1998 HL123)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1998 HL123 = 2001 UX52 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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