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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 ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1948473096584938 3.0148e-08  
a 3.197476211471455 1.9562e-08 au
q 2.574456573969209 9.8183e-08 au
i 19.89701083684211 4.3788e-06 deg
node 65.67753930376462 1.064e-05 deg
peri 101.0599894865158 1.8078e-05 deg
M 59.1813129759367 1.2086e-05 deg
tp 2459053.186006783039
(2020-Jul-22.68600678)
6.9838e-05 TDB
period 2088.379445186679
5.72
1.9165e-05
5.247e-08
d
yr
n .1723824666201021 1.582e-09 deg/d
Q 3.820495848973701 2.3374e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1187  
   data-arc span      8504 days (23.28 yr)  
   first obs. used      1998-04-17  
   last obs. used      2021-07-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47878  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 18:10:13  

Additional Information
 Earth MOID = 1.66759 au 
 Jupiter MOID = 1.57139 au 
 T_jup = 3.073 
[ show covariance matrix ]

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 14.12   n/a MPO637174  
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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