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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 386 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6327761399987699 2.289e-08  
a .8830729092617964 1.0021e-09 au
q .3242854424016329 2.025e-08 au
i 17.06392743682295 1.6203e-06 deg
node 130.1683866096089 9.6514e-07 deg
peri 309.2385155943374 7.012e-07 deg
M 348.4213107543215 4.551e-06 deg
tp 2459406.248777693162
(2021-Jul-10.74877769)
3.8481e-06 TDB
period 303.1051179517698
0.83
5.1594e-07
1.413e-09
d
yr
n 1.187706767977713 2.0217e-09 deg/d
Q 1.44186037612196 1.6362e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2958  
   # 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      .29009  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-03 06:40:45  

Additional Information
 Earth MOID = .0478998 au 
 Jupiter MOID = 3.86306 au 
 T_jup = 6.502 
[ 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 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

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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