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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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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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1952032556386989 4.0509e-08  
a 3.198757646819387 2.3598e-08 au
q 2.57434974016106 1.3814e-07 au
i 19.89577228039323 4.4081e-06 deg
node 65.68303191023254 1.2689e-05 deg
peri 101.074352772847 1.9706e-05 deg
M 350.9054253151754 1.2034e-05 deg
tp 2459053.289837543604
(2020-Jul-22.78983754)
6.9865e-05 TDB
period 2089.634993861598
5.72
2.3124e-05
6.331e-08
d
yr
n .1722788913171521 1.9064e-09 deg/d
Q 3.823165553477715 2.8205e-08 au
  Orbit Determination Parameters
   # obs. used (total)      947  
   data-arc span      8120 days (22.23 yr)  
   first obs. used      1998-04-17  
   last obs. used      2020-07-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49351  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:00:21  

Additional Information
 Earth MOID = 1.66677 au 
 Jupiter MOID = 1.57168 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 14.0   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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