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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .195002599345769 4.0087e-08  
a 3.197959281413779 2.3408e-08 au
q 2.574348908936165 1.365e-07 au
i 19.8963453509654 4.4038e-06 deg
node 65.67845790850254 1.2642e-05 deg
peri 101.0664558432054 1.9682e-05 deg
M 25.37926482634137 1.2061e-05 deg
tp 2459053.240148499057
(2020-Jul-22.74014850)
6.9921e-05 TDB
period 2088.852726944093
5.72
2.2934e-05
6.279e-08
d
yr
n .1723434090667873 1.8922e-09 deg/d
Q 3.821569653891394 2.7972e-08 au
  Orbit Determination Parameters
   # obs. used (total)      970  
   data-arc span      8372 days (22.92 yr)  
   first obs. used      1998-04-17  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49444  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 08:07:08  

Additional Information
 Earth MOID = 1.66639 au 
 Jupiter MOID = 1.5717 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 14.09   n/a E2021B10  
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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1902-Aug-28 05:19 00:05 Jupiter 1.9307747401542 1.93077384658761 1.93077563371892 2.57739119124161 2.40115680872081 2415989.721600802 4.71681272809531 186.394157788436 104.592804083867 34.6560793445315 267953.997842776 T 26 CATAB v2.0g-lin.ifort 2021-May-04 08:07:12 2021-May-04 08:07
2036-Apr-04 06:44 < 00:01 Jupiter 1.73390146866684 1.73390065601276 1.73390228132476 5.39707723253799 5.30579204486565 2464787.780817734 0.62637436430262 153.522737746644 18.0370992886069 -76.7175890528947 3313824.58291761 T 26 CATAB v2.0g-lin.ifort 2021-May-04 08:07:12 2021-May-04 08:07
2047-Jul-28 14:22 < 00:01 Jupiter 1.55622217717743 1.5562215113164 1.55622284304068 4.99867423683823 4.88857665158176 2468920.098658685 0.943883443452019 156.648919650683 24.8798207063555 -82.6957552283636 2930867.30748519 T 26 CATAB v2.0g-lin.ifort 2021-May-04 08:07:12 2021-May-04 08:07
2058-Dec-19 05:57 00:01 Jupiter 1.5671410953407 1.56714022067744 1.56714197000593 4.65752497761526 4.53999569745069 2473081.748063704 1.46166920030839 171.636600376038 36.5451627399761 81.6937633879686 2596334.25254468 T 26 CATAB v2.0g-lin.ifort 2021-May-04 08:07:12 2021-May-04 08:07
2070-Apr-27 08:29 00:03 Jupiter 1.72519494806055 1.72519281326534 1.72519708285929 4.10807657502058 3.98677175590435 2477228.853428107 2.70651124497549 178.800109226397 61.0174723686827 54.1687116536329 1734299.07350392 T 26 CATAB v2.0g-lin.ifort 2021-May-04 08:07:12 2021-May-04 08:07
2081-Jan-04 01:14 00:10 Jupiter 1.9817964103797 1.98179440939051 1.98179841159246 0.787846486903998 n/a 2481133.551675457 10.4894236135201 1137.61531110739 37.6158035164698 85.3373192527397 7853633.52618966 F 26 CATAB v2.0g-lin.ifort 2021-May-04 08:07:12 2021-May-04 08:07

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