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18799 (1999 JZ73)
Classification: Main-belt Asteroid          SPK-ID: 2018799
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2416965645076728 3.1977e-08  
a 2.74338609145904 1.1992e-08 au
q 2.080319098035258 8.9585e-08 au
i 10.18774818723466 3.6243e-06 deg
node 69.96387482171508 2.3897e-05 deg
peri 202.8376932385296 2.5933e-05 deg
M 284.4807856732296 1.3134e-05 deg
tp 2459744.663939619728
(2022-Jun-14.16393962)
6.1769e-05 TDB
period 1659.697063594465
4.54
1.0882e-05
2.979e-08
d
yr
n .2169070536404609 1.4222e-09 deg/d
Q 3.406453084882823 1.489e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2196  
   data-arc span      15530 days (42.52 yr)  
   first obs. used      1978-11-29  
   last obs. used      2021-06-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42033  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 04:41:28  

Additional Information
 Earth MOID = 1.06825 au 
 Jupiter MOID = 1.72228 au 
 T_jup = 3.284 
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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 13.98   n/a MPO636347  
rotation period rot_per 183.059 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]

18799 (1999 JZ73)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

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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
1906-Jul-08 18:35 00:02 Jupiter 1.71242002931046 1.71241958376508 1.71242047486946 2.29598531233294 2.0693668081481 2417400.274408775 2.02131748334083 273.649291980322 16.2213766333952 -82.8539741404681 2573090.11028607 T 32 CATAB v2.0g-lin.ifort 2021-Jul-08 04:41:41 2021-Jul-08 04:41
1965-Apr-02 20:33 < 00:01 Jupiter 1.74107893875719 1.74107841401355 1.74107946350379 2.44963593445923 2.24226012025956 2438853.356129114 0.956299272874289 187.871471843719 15.1355638847262 -83.6962457932979 2340616.87425723 T 32 CATAB v2.0g-lin.ifort 2021-Jul-08 04:41:41 2021-Jul-08 04:41
2002-Feb-19 20:12 < 00:01 Jupiter 1.86998996675311 1.86998953649505 1.86999039701287 2.01420720545803 1.7751392556505 2452325.341324040 0.309331714741201 105.994582765884 30.5410757447066 -73.9914969884785 2373010.50595159 T 32 CATAB v2.0g-lin.ifort 2021-Jul-08 04:41:41 2021-Jul-08 04:41
2023-Dec-18 02:00 < 00:01 Jupiter 1.91841230434861 1.91841188101008 1.9184127276902 2.73619593463686 2.56977097517766 2460296.583626582 0.235006928851289 205.726903278231 13.5433992460409 -86.0170328228962 2749062.05011937 T 32 CATAB v2.0g-lin.ifort 2021-Jul-08 04:41:41 2021-Jul-08 04:41
2060-Nov-09 07:26 < 00:01 Jupiter 1.7220823239164 1.7220819445311 1.72208270330836 2.21340648610502 1.97874943305221 2473772.809497834 0.864505088744398 195.506935646042 20.1474258860246 -82.3951096098617 2496032.86345482 T 32 CATAB v2.0g-lin.ifort 2021-Jul-08 04:41:41 2021-Jul-08 04:41
2119-Aug-08 05:06 00:02 Jupiter 1.73286729329461 1.73286670957781 1.73286787701152 2.41730327876132 2.20584646545896 2495227.712615229 1.97917684691506 183.575274821835 22.5362897470111 -85.975434575777 2251592.58018222 T 32 CATAB v2.0g-lin.ifort 2021-Jul-08 04:41:41 2021-Jul-08 04:41
2156-Jul-02 10:03 00:03 Jupiter 1.9079919469763 1.90799007813059 1.90799381585727 1.8677232676067 1.61261346563168 2508705.918910332 2.86248313202274 455.727063533435 43.4180928993624 -74.0988337929925 2202285.90297798 T 32 CATAB v2.0g-lin.ifort 2021-Jul-08 04:41:41 2021-Jul-08 04:41
2178-Apr-26 01:46 00:03 Jupiter 1.8944757151666 1.89447363907681 1.89447779133135 2.73613181353629 2.5675308659162 2516673.573419568 3.26138605431726 642.70006450495 17.3700008013335 -82.7316099888082 2267197.42092104 T 32 CATAB v2.0g-lin.ifort 2021-Jul-08 04:41:41 2021-Jul-08 04:41

Alternate Designations
 1999 JZ73 = 1978 WW12 = 1990 KO3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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