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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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Orbital Elements at Epoch 2457222.5 (2015-Jul-19.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2431223841098734 3.184e-08  
q 2.07469305819729 8.9168e-08 au
tp 2456426.307181615536
(2013-May-13.80718162)
5.288e-05 TDB
node 70.04994873393646 2.3906e-05 deg
peri 202.7682735728636 2.5931e-05 deg
i 10.19011220734713 3.6248e-06 deg
  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
 Jupiter MOID = 1.72228 au 
 T_jup = 3.284 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.013756037292692E-15 -2.825051764825E-15 -2.742859872660853E-13 -3.513922896383418E-15 -3.347229282582558E-14 3.395902174903824E-16
q -2.825051764825E-15 7.950992691513892E-15 8.569404783795873E-13 9.402209510910424E-15 1.192279889040133E-13 -4.281980767384732E-16
tp -2.742859872660853E-13 8.569404783795873E-13 2.796259107861769E-9 -3.174662723724738E-13 5.557259429161928E-10 2.649202238654158E-12
node -3.513922896383418E-15 9.402209510910424E-15 -3.174662723724738E-13 5.714839518345933E-10 -5.622710748073049E-10 -6.302314961794062E-12
peri -3.347229282582558E-14 1.192279889040133E-13 5.557259429161928E-10 -5.622710748073049E-10 6.724084872226489E-10 6.792625308839087E-12
i 3.395902174903824E-16 -4.281980767384732E-16 2.649202238654158E-12 -6.302314961794062E-12 6.792625308839087E-12 1.313902416026544E-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 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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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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