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JPL Small-Body Database Browser
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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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 346 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6329129434994598 2.4336e-08  
a .8831210737421944 1.1416e-09 au
q .3241823154936186 2.1482e-08 au
i 17.05839857882794 3.3644e-06 deg
node 130.1836507004987 2.0805e-06 deg
peri 309.2118641498776 1.203e-06 deg
M 123.0729076763922 3.1167e-06 deg
tp 2458496.869221697823
(2019-Jan-13.36922170)		 2.4359e-06 TDB
period 303.1299161865818
0.83		 5.8779e-07
1.609e-09		 d
yr
n 1.187609604914131 2.3029e-09 deg/d
Q 1.44205983199077 1.8642e-09 au
   Orbit Determination Parameters
   # obs. used (total)      2766  
   # delay obs. used      11  
   # Doppler obs. used      4  
   data-arc span      10630 days (29.10 yr)  
   first obs. used      1990-06-22  
   last obs. used      2019-07-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .31302  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-30 06:41:25  

Additional Information
 Earth MOID = .048097 au 
 Jupiter MOID = 3.86211 au 
 T_jup = 6.502 
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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 17.1   n/a MPO263970  
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. 2019-January); 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 Macias, A.; Tudor, V.; Predatu, M.; et al. (2017) Earth, Moon, and Planets 120, 41-100.]
[Aznar Macias, A.; 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.]
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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