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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 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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457647.5 (2016-Sep-16.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1963118842660236 4.0489e-08  
q 2.569832954299141 1.3795e-07 au
tp 2456963.316116142709
(2014-Nov-01.81611614)
7.2255e-05 TDB
node 65.70385312373718 1.2692e-05 deg
peri 101.009573507507 1.9637e-05 deg
i 19.89754821656434 4.4083e-06 deg
  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
 Jupiter MOID = 1.57168 au 
 T_jup = 3.073 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.639393443693268E-15 -5.541256764643365E-15 5.163457711313209E-13 -5.000424597478288E-17 1.251270276361873E-13 -7.50091969519295E-15
q -5.541256764643365E-15 1.903011937440259E-14 -2.036821802864328E-12 1.64614015909655E-15 -4.578212894239786E-13 2.6945742083308E-14
tp 5.163457711313209E-13 -2.036821802864328E-12 5.220857043891282E-9 -2.553464321201271E-11 1.099157338446982E-9 2.241329640104731E-12
node -5.000424597478288E-17 1.64614015909655E-15 -2.553464321201271E-11 1.61094489655764E-10 -1.564120058759847E-10 3.515215536836824E-12
peri 1.251270276361873E-13 -4.578212894239786E-13 1.099157338446982E-9 -1.564120058759847E-10 3.85612450936654E-10 -2.79576084553553E-12
i -7.50091969519295E-15 2.6945742083308E-14 2.241329640104731E-12 3.515215536836824E-12 -2.79576084553553E-12 1.943345830313053E-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

[ hide close-approach data ]
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 1.93077481223709 1.93077391433231 1.93077571014001 2.57739240453152 2.40115811687245 2415989.721383849 4.74754685481426 187.644570672295 104.896524919508 34.7436152308974 266741.561060216 T 23 CATAB v2.0f-lin.ifort 2020-Nov-12 21:00:23 2020-Nov-12 21:00
2036-Apr-04 06:44 < 00:01 Jupiter 1.73390145628991 1.7339006405699 1.73390227201376 5.39707706402008 5.30579187228258 2464787.780792095 0.630477430967156 154.243654563172 18.0626223666758 -76.7231059744263 3307754.22233904 T 23 CATAB v2.0f-lin.ifort 2020-Nov-12 21:00:23 2020-Nov-12 21:00
2047-Jul-28 14:22 < 00:01 Jupiter 1.55622209475476 1.55622142558319 1.55622276392853 4.99867413550619 4.88857654145573 2468920.098618632 0.949605906774115 157.539111971033 24.9384950990578 -82.6736767374859 2924876.45624772 T 23 CATAB v2.0f-lin.ifort 2020-Nov-12 21:00:23 2020-Nov-12 21:00
2058-Dec-19 05:57 00:01 Jupiter 1.56714098579088 1.56714010944894 1.56714186213479 4.65752501155102 4.53999572328516 2473081.748019594 1.46901637394063 172.615685706975 36.6592879442855 81.7496401787408 2591541.8026991 T 23 CATAB v2.0f-lin.ifort 2020-Nov-12 21:00:23 2020-Nov-12 21:00
2070-Apr-27 08:29 00:03 Jupiter 1.72519486305097 1.72519272143204 1.72519700467343 4.10807679231999 3.98677197306689 2477228.853371764 2.71851144006417 179.814652669493 61.1862819477934 54.2748790549186 1733173.24416469 T 23 CATAB v2.0f-lin.ifort 2020-Nov-12 21:00:23 2020-Nov-12 21:00
2081-Jan-04 01:14 00:11 Jupiter 1.98179644448689 1.9817944364309 1.98179845276893 0.787846463308617 n/a 2481133.551608057 10.5428671619142 1143.32477771773 37.6325590727132 85.341882280992 7850187.56415887 F 23 CATAB v2.0f-lin.ifort 2020-Nov-12 21:00:23 2020-Nov-12 21:00

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