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JPL Small-Body Database Browser
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18717 (1998 HZ127)
Classification: Outer Main-belt Asteroid          SPK-ID: 2018717
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1141254481688321 3.7563e-08  
a 3.206350641608946 2.3176e-08 au
q 2.840424437648903 1.2053e-07 au
i .9666405930714179 5.2274e-06 deg
node 199.0063972087287 0.00024515 deg
peri 62.84417427815831 0.0002466 deg
M 257.4249509260143 3.0225e-05 deg
tp 2459598.022386649296
(2022-Jan-18.52238665)
0.00017882 TDB
period 2097.079759022026
5.74
2.2737e-05
6.225e-08
d
yr
n .1716672904076315 1.8612e-09 deg/d
Q 3.572276845568989 2.5821e-08 au
  Orbit Determination Parameters
   # obs. used (total)      879  
   data-arc span      21652 days (59.28 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57649  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 00:51:49  

Additional Information
 Earth MOID = 1.82507 au 
 Jupiter MOID = 1.48901 au 
 T_jup = 3.182 
[ 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 14.4   n/a MPO257001  
diameter diameter 6.828 km 0.220 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.072   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18717 (1998 HZ127)          Discovered 1998-Apr-18 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ 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
1903-Dec-14 18:17 00:03 Jupiter 1.78334615392337 1.78334429792281 1.78334800992627 2.85140936295255 2.67966609689031 2416463.261986256 2.9291795936581 151.729490103598 15.4984685604853 -70.3122723149033 1932222.72766261 T 21 CATAB v2.0f-lin.ifort 2020-Jan-29 00:52:08 2020-Jan-29 00:52
2002-Aug-12 09:35 < 00:01 Jupiter 1.82104259681921 1.82104195165384 1.82104324198438 2.38885314156588 2.18548810649348 2452498.899626968 0.504871787476151 55.1850092807369 13.731950272207 88.593636603296 2163075.82644451 T 21 CATAB v2.0f-lin.ifort 2020-Jan-29 00:52:08 2020-Jan-29 00:52
2013-Jul-30 02:07 < 00:01 Jupiter 1.57745584934817 1.5774554525126 1.57745624618347 1.67969862584577 1.32192202533541 2456503.588032713 0.236103075456761 70.0341366153119 48.5720986788859 -68.3697980357746 2396784.03544717 T 21 CATAB v2.0f-lin.ifort 2020-Jan-29 00:52:08 2020-Jan-29 00:52
2024-Aug-01 07:16 < 00:01 Jupiter 1.47592677129572 1.47592634764155 1.4759271949493 1.50003283528633 1.04991169905229 2460523.802719411 0.491655316795044 142.739446260954 80.7219988272113 -6.10555917724582 1811499.43274618 T 21 CATAB v2.0f-lin.ifort 2020-Jan-29 00:52:08 2020-Jan-29 00:52
2035-Jul-27 18:03 < 00:01 Jupiter 1.56163640982572 1.56163580997989 1.56163700967102 1.89272621418269 1.58038733909234 2464536.252121851 0.931849064566685 67.815902178289 30.0134000188888 76.2401133380682 1779888.78715087 T 21 CATAB v2.0f-lin.ifort 2020-Jan-29 00:52:08 2020-Jan-29 00:52
2046-Jun-24 10:05 00:01 Jupiter 1.80711779446404 1.80711696517714 1.80711862375125 2.98004330352681 2.81837344348881 2468520.920371755 1.33303917163321 75.6039842608107 16.3552827255575 -73.7341319444724 2199162.36392808 T 21 CATAB v2.0f-lin.ifort 2020-Jan-29 00:52:08 2020-Jan-29 00:52
2145-Mar-02 20:36 00:04 Jupiter 1.82403689884325 1.82403502601767 1.824038771668 2.34018824518033 2.13254473628602 2504566.358434805 3.51426136849135 99.1657996886789 23.6023110611703 -72.2347959171335 1249056.11014723 T 21 CATAB v2.0f-lin.ifort 2020-Jan-29 00:52:08 2020-Jan-29 00:52
2156-Feb-20 16:34 00:04 Jupiter 1.58889661812821 1.58889519924882 1.5888980370047 1.66975379984468 1.31221215923415 2508573.190592551 3.74846028674523 90.7727771385788 61.3470323715895 -36.2383999442758 1029396.038048 T 21 CATAB v2.0f-lin.ifort 2020-Jan-29 00:52:08 2020-Jan-29 00:52
2167-Feb-22 09:35 00:04 Jupiter 1.490590458965 1.49059001667962 1.49059090125021 1.52098787875113 1.08485553125873 2512592.899127998 4.09369287364291 134.531411958984 99.1471064616306 9.14157320882545 1777989.18555142 T 21 CATAB v2.0f-lin.ifort 2020-Jan-29 00:52:08 2020-Jan-29 00:52
2178-Feb-16 05:35 00:05 Jupiter 1.57652350734889 1.57652189291202 1.5765251217889 1.94563163679938 1.64649255476461 2516604.732503083 4.79847314038749 203.688072003659 24.9427086929635 75.3041018816883 1668372.95350031 T 21 CATAB v2.0f-lin.ifort 2020-Jan-29 00:52:08 2020-Jan-29 00:52
2189-Jan-15 06:57 00:05 Jupiter 1.80842307617063 1.80842030869781 1.80842584365466 3.02181315717861 2.86262155194244 2520590.789663176 5.42785561248532 276.659160351747 16.6713210028031 -71.4100440333349 2182174.96721573 T 21 CATAB v2.0f-lin.ifort 2020-Jan-29 00:52:08 2020-Jan-29 00:52

Alternate Designations
 1998 HZ127 = 1988 RJ10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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