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JPL Small-Body Database Browser
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18005 (1999 JD91)
Classification: Main-belt Asteroid          SPK-ID: 2018005
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2585868893626096 3.8722e-08  
a 2.395497466466945 8.0101e-09 au
q 1.776053228137246 9.2489e-08 au
i 11.35446831424061 3.8912e-06 deg
node 164.2601696935303 1.9304e-05 deg
peri 230.4878503908753 2.0065e-05 deg
M 84.28642872282101 6.3555e-06 deg
tp 2458683.435840483385
(2019-Jul-18.93584048)
2.3231e-05 TDB
period 1354.228660005815
3.71
6.7924e-06
1.86e-08
d
yr
n .2658339840470177 1.3334e-09 deg/d
Q 3.014941704796644 1.0081e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1512  
   data-arc span      11078 days (30.33 yr)  
   first obs. used      1989-09-05  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47384  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 00:38:14  

Additional Information
 Earth MOID = .803983 au 
 Jupiter MOID = 2.48585 au 
 T_jup = 3.457 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.2   n/a MPO412320  
diameter diameter 6.899 km 0.164 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.093   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18005 (1999 JD91)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 JD91 = 1989 RX1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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