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85989 (1999 JD6)
Classification: Aten [NEO, PHA]          SPK-ID: 2085989
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 385 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6328464433126421 2.2904e-08  
a .8830624792529012 1.0015e-09 au
q .3242195300348589 2.0262e-08 au
i 17.06392972154023 1.6213e-06 deg
node 130.1685480094608 9.6568e-07 deg
peri 309.2392232864041 7.0133e-07 deg
M 115.6326844976807 4.1639e-06 deg
tp 2459103.143784637744
(2020-Sep-10.64378464)
3.3434e-06 TDB
period 303.0997479879055
0.83
5.1563e-07
1.412e-09
d
yr
n 1.187727810365468 2.0205e-09 deg/d
Q 1.441905428470943 1.6353e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2954  
   # delay obs. used      11  
   # Doppler obs. used      4  
   data-arc span      10979 days (30.06 yr)  
   first obs. used      1990-06-22  
   last obs. used      2020-07-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .29025  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:16:13  

Additional Information
 Earth MOID = .0485071 au 
 Jupiter MOID = 3.86236 au 
 T_jup = 6.502 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456794.5 (2014-May-17.0) TDB
Reference: JPL 385 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6328546590962688 2.3061e-08  
q .3240553992180545 2.047e-08 au
tp 2456678.700864514696
(2014-Jan-21.20086451)
1.1359e-06 TDB
node 130.2387077939848 9.7348e-07 deg
peri 309.1941139940581 7.2351e-07 deg
i 17.05657901531908 1.6248e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2954  
   # delay obs. used      11  
   # Doppler obs. used      4  
   data-arc span      10979 days (30.06 yr)  
   first obs. used      1990-06-22  
   last obs. used      2020-07-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .29025  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:16:13  

Additional Information
 Jupiter MOID = 3.86236 au 
 T_jup = 6.502 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.317967641490496E-16 -4.719617884208572E-16 -8.297953741861313E-15 5.897488721377608E-15 9.58052095212641E-15 -1.704437745213306E-14
q -4.719617884208572E-16 4.190039444315771E-16 6.960666931502158E-15 -5.258982623265461E-15 -8.523184497406646E-15 1.516295559014753E-14
tp -8.297953741861313E-15 6.960666931502158E-15 1.290222914328704E-12 -1.661509247168736E-13 -1.688947638414723E-14 3.843555352991473E-13
node 5.897488721377608E-15 -5.258982623265461E-15 -1.661509247168736E-13 9.476553047728224E-13 -4.288453844193837E-13 -1.544214552556727E-12
peri 9.58052095212641E-15 -8.523184497406646E-15 -1.688947638414723E-14 -4.288453844193837E-13 5.234646267606651E-13 5.176287577257117E-13
i -1.704437745213306E-14 1.516295559014753E-14 3.843555352991473E-13 -1.544214552556727E-12 5.176287577257117E-13 2.639949671464451E-12

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 17.06   n/a E2021B10  
diameter diameter 1.462 km 0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  
rotation period rot_per 7.6638 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (1999) http://www.asu.cas.cz/~ppravec/neo.htm]
[Pravec, P.; Wolf, M.; Sarounova, L. (2000) http://www.asu.cas.cz/~ppravec/neo.htm]
[Szabo, Gy.M.; Csak, B.; Sarneczky, K.; Kiss, L.L. (2001) Astron. Astrophys. 375, 285-292.]
[Polishook, D.; Brosch, N.; Prianik, D. (2005) Abstr. IAU Symp. 229, p. 60-61.]
[Polishook, D.; Brosch, N. (2008) Icarus 194, 111-124.]
[Warner, Brian D. (2014) Minor Planet Bull. 41, 213-224.]
[Warner, B.D. (2015) Minor Planet Bull. 42, 256-266.]
[Vaduvescu, O.; Aznar, A.M.; Tudor, V.; Predatu, M.; et al. (2017) Earth, Moon, and Planets 120, 41-100.]
[Aznar, A.M.; Predatu, M.; Vaduvescu, O.; Oey, J. (2018) arXiv:1801.09420. Romanian J. Phys. 62, 904 (2017).]
[Warner, B.D. (2018) Minor Planet Bull. 45, 366-379.]
[Warner, B.D.; Stephens, R.D. (2019) Minor Planet Bull. 46, 423-438.]
[Warner, B.D.; Stephens, R.D. (2020) Minor Planet Bull. 47, 290-304.]
geometric albedo albedo 0.056   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2014ApJ...784..110M)  
SMASSII spectral type spec_B K   n/a Binzel et al. (2001) Icarus 151, 139-149  

85989 (1999 JD6)          Discovered 1999-May-12 by LONEOS at Anderson Mesa
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

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